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\nHighlightsAlthough numerous individual factors influencing dream content have been explored, research on the link between sexual orientation and dreaming remains limited. This study examined this relationship among 119 German-speaking men (mean age = 31.97 years), including 55 homosexual and 64 heterosexual participants. Participants completed a questionnaire on their waking life sexuality and dreams and provided two dream reports. Homosexual men reported more sexual partners in waking life and lower satisfaction with their sexual orientation compared to heterosexual men. No significant differences were found in dream recall frequency, emotional tone, nightmare frequency, or distress, though homosexual men reported more sexual dreams. Dream reports showed no significant differences in sexual interactions or the number of sexual partners between groups, but homosexual men’s dreams featured a higher ratio of male to female characters and more romantic relationships with men. These findings partially align with the continuity hypothesis, suggesting that the dream content of homosexual men reflects their social interactions and romantic preferences. Overall, the study suggests that homosexual and heterosexual men share a similar dream pattern. The implications of these findings highlight the importance of considering sexual orientation in dream research to better understand the intersection of sexuality and unconscious processes. First recent comparative analysis of dreams between homosexual and heterosexual menHomosexual and heterosexual men share a similar dream patternThe main differences in dream content were that homosexual men reported more sexual dreams, a higher ratio of male to female dream characters, and more romantic relationships with menFuture studies with larger sample sizes and more advanced methods (e.g. diary studies) are needed to better understand the relationship between sexual orientation and dreamingFirst recent comparative analysis of dreams between homosexual and heterosexual menHomosexual and heterosexual men share a similar dream patternThe main differences in dream content were that homosexual men reported more sexual dreams, a higher ratio of male to female dream characters, and more romantic relationships with menFuture studies with larger sample sizes and more advanced methods (e.g. diary studies) are needed to better understand the relationship between sexual orientation and dreaming [ABSTRACT FROM AUTHOR]

A vast number of empirical findings support the continuity hypothesis of dreaming. Interestingly, research on that topic in adolescents is scarce. In a sample of 100 adolescents (50 female, 50 male) with a mean age 15.30 ± 0.80 years, it was found that for all six topics (watching TV, video gaming, social media use, engage in hobbies, caring for pets, and spending time with the partner), dream percentages of a specific topic was higher if the adolescents spent more time with this activity in waking life. Partner dreams and social media dreams were more frequent compared to adults, stressing the importance these issues have for adolescents. Future research can help to understand the well-being of adolescents by analyzing the emotional quality and content of their dreams. [ABSTRACT FROM AUTHOR]

Introduction: It has long been argued that there are dream metaphors which express waking-life experiences indirectly. Most of empirical evidence concerning this topic was in a qualitative way, while few studies explored the topic in a quantitative way. Under this background, we investigated whether dreaming of the typical theme 'being chased or pursued' was a metaphorical expression for waking-life experiences related to 'negative relationships with others'. Methods: One hundred and sixty participants reported their waking-life experiences and dreams for a single day. Following this, two external judges rated whether there were any elements related to 'negative relationships with others' in both waking-life experiences and dreams. In addition, the judges assessed if there was any content related to 'being chased or pursued' in both waking-life experiences and dreams. Results: The frequency of dreaming of 'negative relationships with others' was higher than the frequency of the same topic in waking-life experiences, which in turn was higher than the frequency of typical theme dreaming of 'being chased or pursued'. In addition, 'negative relationships with others' in waking-life experiences were correlated with both dreaming of 'being chased or pursued', and 'negative relationships with others' in dreams. Conclusion: These results suggested that the typical theme 'being chased or pursued' in dreams may represent some waking-life experiences metaphorically. In addition, the results support the threat simulation theory of dreaming, which suggests that threatening events in waking life increase the possibility of threatening events in dreams. [ABSTRACT FROM AUTHOR]

In Christian faith, dreams – at least some – have been seen as messages from God; very powerful examples can be found in the Bible. However, empirical research regarding dreams of God is relatively scarce. Four hundred and fifty-two persons participated in the present survey, including a group from theology-related professions (theology students, priests, etc.). The findings indicate that the belief that dreams can be messages from God is related to the importance of faith in the everyday life of the dreamer and a positive attitude towards dreams. About 20% of the participants reported having dreams about encountering God, which was related to their waking life religiosity. On the one hand, the findings support the continuity hypothesis of dreaming, that is, that dreaming reflects waking life, while, on the other hand, these special dreams might help the dreamer to deepen their faith. Longitudinal studies are necessary to study this bidirectional relationship between waking life faith and religious dreams. [ABSTRACT FROM AUTHOR]

Summary: As dreams reflect waking life, the so‐called continuity hypothesis of dreaming, the literature showing that work‐related stress affects dreams negatively is very plausible. As in waking life, hobbies are an important component in the work–life balance. In the present study, the work–life balance in dreams was studied. Overall, 1695 persons (960 women, 735 men; mean age: 53.84 ± 13.99 years) participated in an online survey entitled "Everyday life and dreams". The data collected refer to the pre‐pandemic period. The findings indicate that hobby‐related dreams are more frequent in persons who often engage in their hobbies, supporting the notion of a thematic continuity. As expected, the emotional tone of hobby‐related dreams was more positive compared with dreams in general and work‐related dreams in particular. Interestingly, the emotional valence of hobby‐related dreams was related to the valence of general emotionality towards work in waking life, supporting the idea of an emotional continuity between waking and dreaming. The work–life balance in dreams could be defined as the difference of the percentages of work‐related and hobby‐related dreams; it is linked to work‐related stress and the hobby frequency, factors similar to those that shift the work–life balance in waking life toward the "work" end of the spectrum. [ABSTRACT FROM AUTHOR]

IntroductionDreaming is the subjective experience during sleep. A spontaneous thought is a thought that comes to one’s mind involuntarily. This study investigated whether presleep focusing on a positive spontaneous thought enhanced the possibility of dreaming of the thought.MethodsNinety-seven participants were quasi-randomly assigned to an expression condition (focus on an spontaneous thought for 5-Min before sleeping; N = 45) and a control condition (think about anything for 5-Min before sleeping; N = 45). Participants completed a dream diary upon waking. Then, both participants themselves (the selfrating method) and external judges (the external-rating method) rated the correlation between the positive spontaneous thought and the dream.ResultsThe result of the external-rating method indicated that presleep focusing on positive spontaneous thoughts enhanced the possibility of dreaming of the thoughts. In addition, the external-rating method found that presleep focusing on positive spontaneous thoughts enhanced the possibility of dreaming of thoughts that were related to the positive spontaneous thoughts but not the positive spontaneous thoughts themselves.DiscussionThese results supported the current concern theory which suggests that one’s current concerns increase responses to cues related to the concerns implicitly. In addition, these results supported the continuity hypothesis which states that dreaming is in continuous with waking life, and thus the intensity of a daily concern may be related to the possibility of dreaming of the daily concern.

There is increasing evidence that sleep plays an important role in affective processing. However, it is unclear whether dreaming-the subjective experiences we have during sleep-also serves an affect regulation function. Here, we investigated the within-person relationship between negative affect experienced in dreams and next-day waking affect level, affect reactivity, and affect regulation. For 5 days, 40 participants reported their dreams and rated their dream affect and post-sleep waking affect level upon morning awakening. Thereafter, they performed an affect reactivity and regulation task which involved viewing neutral and negative pictures with the instruction either to simply view the pictures or to down-regulate the affect evoked by these pictures. Multilevel regression analyses showed that the more negative affect people experienced in their dreams at night, the more negative affect and the less positive affect they reported the next morning. However, negative dream affect was associated neither with affect reactivity to the pictures nor with the ability to down-regulate negative affect in response to these pictures. In fact, Bayesian analyses favored the null hypotheses. These findings fail to provide support for the affect regulation function of dreaming and, instead, speak for affective continuity between dreaming and post-sleep wakefulness. [ABSTRACT FROM AUTHOR]

Many dream content analytic studies focus on dream characters, animals, social interactions and so on, but they rarely analyze the frequency of everyday objects in dreams. In the present paper, the frequency and phenomenology of clock dreams in a dream series of 12,476 dreams of a single male dreamer was analyzed. The clock dreams (0.74% of all dreams) show a variety of contexts not only related to the time management of the dreamer within the dream. Interestingly, clocks that belong to the dreamer in waking life occurred very rarely in his dreams. Given that keeping time schedules and appointments in waking life is of importance to almost everyone, the low frequency of clock dreams might be explained by novelty, that is, waking-life experiences that repeat themselves regularly do not show up in dreams that often. Thus, studying everyday objects such as clocks in dreams might help refine the current models describing the continuity between waking and dreaming.

There is increasing evidence that sleep plays an important role in affective processing. However, it is unclear whether dreaming—the subjective experiences we have during sleep—also serves an affect regulation function. Here, we investigated the within-person relationship between negative affect experienced in dreams and next-day waking affect level, affect reactivity, and affect regulation. For 5 days, 40 participants reported their dreams and rated their dream affect and post-sleep waking affect level upon morning awakening. Thereafter, they performed an affect reactivity and regulation task which involved viewing neutral and negative pictures with the instruction either to simply view the pictures or to down-regulate the affect evoked by these pictures. Multilevel regression analyses showed that the more negative affect people experienced in their dreams at night, the more negative affect and the less positive affect they reported the next morning. However, negative dream affect was associated neither with affect reactivity to the pictures nor with the ability to down-regulate negative affect in response to these pictures. In fact, Bayesian analyses favored the null hypotheses. These findings fail to provide support for the affect regulation function of dreaming and, instead, speak for affective continuity between dreaming and post-sleep wakefulness.

Summary: Several studies have tried to identify the neurobiological bases of dream experiences, nevertheless some questions are still at the centre of the debate. Here, we summarise the main open issues concerning the neuroscientific study of dreaming. After overcoming the rapid eye movement (REM) ‐ non‐REM (NREM) sleep dichotomy, investigations have focussed on the specific functional or structural brain features predicting dream experience. On the one hand, some results underlined that specific trait‐like factors are associated with higher dream recall frequency. On the other hand, the electrophysiological milieu preceding dream report upon awakening is a crucial state‐like factor influencing the subsequent recall. Furthermore, dreaming is strictly related to waking experiences. Based on the continuity hypothesis, some findings reveal that dreaming could be modulated through visual, olfactory, or somatosensory stimulations. Also, it should be considered that the indirect access to dreaming remains an intrinsic limitation. Recent findings have revealed a greater concordance between parasomnia‐like events and dream contents. This means that parasomnia episodes might be an expression of the ongoing mental sleep activity and could represent a viable direct access to dream experience. Finally, we provide a picture on nightmares and emphasise the possible role of oneiric activity in psychotherapy. Overall, further efforts in dream science are needed (a) to develop a uniform protocol to study dream experience, (b) to introduce and integrate advanced techniques to better understand whether dreaming can be manipulated, (c) to clarify the relationship between parasomnia events and dreaming, and (d) to determine the clinical valence of dreams. [ABSTRACT FROM AUTHOR]

Several studies have highlighted associations between adverse life events and the dysphoric character of dream experiences. This degree of continuity between waking-life and dream content seems partly attributed to the emotional and personal attachment linked to the incorporated waking experiences. Numerous changes in the processing of emotion-related stimuli are also reported across different human developmental stages. Therefore, we were interested in testing whether age would modulate the impact of recent troubling experiences on dream characteristics. Two hundred sixty participants, evenly distributed in five developmental stages, matched for gender and their exposure to a troubling experience, were selected from a large sample collected for a previous normative study of dreams of Canadians. Participants completed a dream questionnaire from which independent judges subsequently scored the dreams. We observed no interactions between the experience of troubling events and age. However, individuals who experienced a recent troubling event reported a higher frequency of nightmares and their dreams were more emotionally negative. Participants who experienced a moderately severe troubling event were also more likely to experience a dream whose maximal threat severity was of moderate intensity. Adolescents and young adults had dreams with a higher level of oneiric threats compared to older adults (>40 years old). Young adults also reported a higher frequency of nightmares compared to older adults. Our findings have implications for modern dream theories. They also suggest that dysphoric dreams might serve as potential proxies of mental health status and developmental stages. Future studies are now needed to explore the implications of these findings for psychological adaptation. [ABSTRACT FROM AUTHOR]

Professional work is an integral part of modern life. According to the continuity hypothesis of dreaming, which states that dreams reflect waking life, work-related dreams should be quite common. As most dream content analytic studies are carried out in student samples, the topic of work in dreams is understudied. A few small studies indicate that the stress levels associated with the job are especially reflected in work-related dreams. Here, a total of 1695 people (960 women, 735 men) completed an online survey that included questions about the estimated percentage of work-related dreams, the overall emotional tone of work-related dreams, and waking-life experiences related to their current job situation (working or not working). The findings indicate that every fifth dream is related to current or previous work. Individuals who are working dreamed more often about work, with jobs that are experienced as being more stressful being more likely to affect dream content. The emotional tone of work-related dreams was related to stress and the emotions related to work in waking life. Overall, the findings demonstrate that professional life has a profound effect on dreaming in many individuals—even after years. The next steps would be to study the dream content of work-related dreams and relate these contents to specific characteristics about the jobs, e.g., professional field, hierarchical position and autonomy, etc.

This study investigated whether ruminating on an intrusive thought before sleeping led to an increased likelihood of dreaming of threatening events. One hundred and forty-six participants were randomly assigned to a rumination condition (a rumination on an intrusive thought for 5 min before sleeping; N = 73) and a control condition (think about anything for 5 min before sleeping; N = 73). Participants completed a dream diary upon waking. The result showed that presleep ruminating on an intrusive thought increased the frequency of both threatening dreams and negative emotions in dreams. In addition, dreams with threatening events were more emotional and negative than dreams without threatening events. These results may support the threat simulation theory of dreaming. In addition, these results may give some insight into a mathematical model for the continuity hypothesis of dreaming.

This study investigated whether ruminating on an intrusive thought before sleeping led to an increased likelihood of dreaming of threatening events. One hundred and forty-six participants were randomly assigned to a rumination condition (a rumination on an intrusive thought for 5 min before sleeping; N = 73) and a control condition (think about anything for 5 min before sleeping; N = 73). Participants completed a dream diary upon waking. The result showed that presleep ruminating on an intrusive thought increased the frequency of both threatening dreams and negative emotions in dreams. In addition, dreams with threatening events were more emotional and negative than dreams without threatening events. These results may support the threat simulation theory of dreaming. In addition, these results may give some insight into a mathematical model for the continuity hypothesis of dreaming. [ABSTRACT FROM AUTHOR]

The aim of this study is to review the available findings on dreaming during the COVID-19 pandemic. To that end, we explored the PsycINFO, Cochrane, EBSCOhost, EMBASE, Google Scholar, PubMed, Pro-Quest Medical, ScienceDirect, Scopus, and Web of Science electronic databases, as well as the medRxiv.org, psyarxiv.com, and arXiv.org preprints servers. We input the search terms 'dream(s)', 'dreaming', 'nightmare(s)', as associated with the additional terms 'COVID-19', '2019-nCoV', '2019 coronavirus', 'Wuhan coronavirus', '2019 novel coronavirus', 'SARS-CoV-2', and/or 'pandemic'. Thirty-nine papers (from a total pool of 57,802 participants from over eighty-six countries) were thus included in this systematic research literature review on dreaming during the COVID-19 pandemic. Results showed the following: women remember dreams and nightmares with more thick description, and they report the longest and most emotionally negative dreams; younger subjects, such as adolescents and young adults, have the dreams most affected by the pandemic; and, finally, the dreams of participants who came into direct contact with COVID-19 are characterized by a higher emotional intensity. We also describe the most frequent qualitative and quantitative characteristics of dreams and nightmares. Taken together, the results of this systematic research literature review highlight the influence of the COVID-19 pandemic on dreaming, by showing how this traumatic event has been reflected in dream life. [ABSTRACT FROM AUTHOR]

Many dream content analytic studies focus on dream characters, animals, social interactions and so on, but they rarely analyze the frequency of everyday objects in dreams. In the present paper, the frequency and phenomenology of clock dreams in a dream series of 12,476 dreams of a single male dreamer was analyzed. The clock dreams (0.74% of all dreams) show a variety of contexts not only related to the time management of the dreamer within the dream. Interestingly, clocks that belong to the dreamer in waking life occurred very rarely in his dreams. Given that keeping time schedules and appointments in waking life is of importance to almost everyone, the low frequency of clock dreams might be explained by novelty, that is, waking-life experiences that repeat themselves regularly do not show up in dreams that often. Thus, studying everyday objects such as clocks in dreams might help refine the current models describing the continuity between waking and dreaming. [ABSTRACT FROM AUTHOR]

Summary: COVID‐19 has critically impacted the world. Recent works have found substantial changes in sleep and mental health during the COVID‐19 pandemic. Dreams could give us crucial information about people's well‐being, so here we have directly investigated the consequences of lockdown on the oneiric activity in a large Italian sample: 5,988 adults completed a web‐survey during lockdown. We investigated sociodemographic and COVID‐19‐related information, sleep quality (by the Medical Outcomes Study‐Sleep Scale), mental health (by the Depression, Anxiety, and Stress Scales), dream and nightmare frequency, and related emotional aspects (by the Mannheim Dream Questionnaire). Comparisons between our sample and a population‐based sample revealed that Italians are having more frequent nightmares and dreams during the pandemic. A multiple logistic regression model showed the predictors of high dream recall (young age, female gender, not having children, sleep duration) and high nightmare frequency (young age, female gender, modification of napping, sleep duration, intrasleep wakefulness, sleep problem index, anxiety, depression). Moreover, we found higher emotional features of dream activity in workers who have stopped working, in people who have relatives/friends infected by or who have died from COVID‐19 and in subjects who have changed their sleep habits. Our findings point to the fact that the predictors of high dream recall and nightmares are consistent with the continuity between sleep mentation and daily experiences. According to the arousal‐retrieval model, we found that poor sleep predicts a high nightmare frequency. We suggest monitoring dream changes during the epidemic, and also considering the implications for clinical treatment and prevention of mental and sleep disorders. [ABSTRACT FROM AUTHOR]

Animal dreams have fascinated mankind for ages. Empirical research indicated that children dream more often about animals than adults and dogs, cats, and horses are the most frequent animals that appear within dreams. Moreover, most dreamer-animal interactions are negative. The present study included 4849 participants (6 to 90 yrs. old) reporting 2716 most recent dreams. Overall, 18.30% of these dreams included animals with children reporting more animal dreams that adolescents and adults. The most frequent animals were again dogs, horses, and cats; about 20% of the dream animals were in fact pets of the dreamers. About 30% of the dream animals showed bizarre features, e.g., metamorphosing into humans or other animals, bigger than in real life, or can talk. Taken together, the findings support the continuity hypothesis of dreaming but also the idea that dreams reflect waking-life emotions in a metaphorical and dramatized way. Future studies should focus on eliciting waking-life experiences with animals, e.g., having a pet, animal-related media consumption, and relating these to experiences with animals in dreams. [ABSTRACT FROM AUTHOR]

The present study explored whether individual differences in implicit learning were related to the incorporation of waking events into dreams. Participants (N = 60) took part in a sequence learning task, a measure of implicit learning ability. They were then asked to keep a record of their waking experiences (personally significant events [PSEs]/major concerns), as well as their nightly dreams for a week. Of these, the responses of 51 participants were suitable for further analysis in which participants themselves and three independent judges rated the correlation between waking events and dreams of the same day. Implicit learning ability was found to significantly correlate with the incorporation of PSEs into dreams. The present results may lend support to the Horton and Malinowski autobiographical memory (AM) model, which accounts for the activation of memories in dreams as a reflection of sleep‐dependent memory consolidation processes that focusses in particular on the hyperassociative nature of AM during sleep. [ABSTRACT FROM AUTHOR]

Objective: The lockdown due to COVID-19 pandemic had a strong impact on daily habits, emotional experience, mental health and sleep. A large body of evidence suggests that dreams are affected by both waking experiences and sleep pattern. In this view, the lockdown should have induced intense modifications in dreaming activity. The aim of the study was to assess dream features during the lockdown in Italy.Methods: We used an online survey to collect self-reported demographic, clinical, sleep and dream data. Our sample included 1091 participants.Results: Results point to an increased dream frequency, emotional load, vividness, bizarreness and length during the lockdown, compared to a pre-lockdown period. Higher dream frequency and specific qualitative features were found in females and subjects with poor sleep quality, nocturnal disruptive behaviours and depressive symptoms. Most of the dream features assessed during the lockdown were predicted by age, gender, depressive symptoms, presence/absence of other people at home, and territorial area. A specific focus on sleep features revealed that sleep duration and several sleep quality indexes were the best predictors of dream variables. During the lockdown, dreams were also characterized by increased negative emotions, which were particularly frequent in females, younger adults, and participants with poor sleep quality, nocturnal disruptive behaviours, anxiety and depressive symptoms.Conclusions: Our results confirm the hypothesis of a strong influence of the pandemic on dreaming, supporting both the hypothesis of continuity between wake and sleep mental processes and the view of a crucial influence of sleep quality and duration on dreaming activity. [ABSTRACT FROM AUTHOR]

In every culture and nation music has been mentioned as a sort of natural language. While the existence of dreams including music in musicians has been anecdotally reported, music in dreams have been rarely studied empirically. In the present study, 425 participants, mostly psychology students, reported their dreams in a dream diary for 14 days as well as the intensity of their dream emotions and answered a questionnaire about whether they play existing music or compose new music during the day. As expected, for persons playing an instrument in their leisure time, there was a direct link between playing an instrument during the day and having more dreams including music, thus confirming the continuity hypothesis of dreaming. In addition, dreams including music were more positively-toned regarding emotions than dreams in general. Further research might investigate, for example, whether dreams including music play a role in improving music performance skills. [ABSTRACT FROM AUTHOR]

Since the formulation of the continuity hypothesis in 1971, research findings have supported the thematic and emotional continuity between waking and dreaming. However, dreams that include experiences that never occurred in the dreamer's waking life, this is, discontinuous dreams, have not been studied extensively. In a long series (N = 11,575 dreams), elevator dreams (about 1% of the dreams) were analyzed whether they were continuous or discontinuous to the waking life of the dreamer. Although many elevator dreams are likely to reflect waking life, in over 40% of the elevator dreams the dreamer was using an elevator that showed unusual or even bizarre features, for example, elevator moving horizontally or flying, transforming into a subway, and so on. Often these dreams were associated with anxiety, and the question is whether these dreams—discontinuous on a thematic level—represent a continuity of emotions and/or are a metaphorical expression of the dreamer's waking life situation, for example, ups and downs. [ABSTRACT FROM AUTHOR]

Being something or someone else or being younger in dreams are quite rare topics. In this study, the relationship between boundary thinness and these topics was studied. A sample of 444 students completed the Typical Dream Questionnaire and the Boundary Questionnaire. As expected, persons with thin boundaries dreamed more often being something or someone else or being younger reflecting the traits associated with boundary thinness, for example, good memory for childhood experiences and fluid sexual identity. Although large dream samples would be necessary, the next step would be to look at dream content, for example, whether being someone or something else is related to positive or negative emotions. [ABSTRACT FROM AUTHOR]

Professional work is an integral part of modern life. According to the continuity hypothesis of dreaming, which states that dreams reflect waking life, work-related dreams should be quite common. As most dream content analytic studies are carried out in student samples, the topic of work in dreams is understudied. A few small studies indicate that the stress levels associated with the job are especially reflected in work-related dreams. Here, a total of 1695 people (960 women, 735 men) completed an online survey that included questions about the estimated percentage of work-related dreams, the overall emotional tone of work-related dreams, and waking-life experiences related to their current job situation (working or not working). The findings indicate that every fifth dream is related to current or previous work. Individuals who are working dreamed more often about work, with jobs that are experienced as being more stressful being more likely to affect dream content. The emotional tone of work-related dreams was related to stress and the emotions related to work in waking life. Overall, the findings demonstrate that professional life has a profound effect on dreaming in many individuals--even after years. The next steps would be to study the dream content of work-related dreams and relate these contents to specific characteristics about the jobs, e.g., professional field, hierarchical position and autonomy, etc. [ABSTRACT FROM AUTHOR]

Anastasia Mangiaruga, Serena Scarpelli, Chiara Bartolacci, Luigi De Gennaro Department of Psychology, University of Rome “Sapienza”, Rome, Italy Abstract: Brain and sleep maturation covary across different stages of life. At the same time, dream generation and dream recall are intrinsically dependent on the development of neural systems. The aim of this paper is to review the existing studies about dreaming in infancy, adulthood, and the elderly stage of life, assessing whether dream mentation may reflect changes of the underlying cerebral activity and cognitive processes. It should be mentioned that some evidence from childhood investigations, albeit still weak and contrasting, revealed a certain correlation between cognitive skills and specific features of dream reports. In this respect, infantile amnesia, confabulatory reports, dream-reality discerning, and limitation in language production and emotional comprehension should be considered as important confounding factors. Differently, growing evidence in adults suggests that the neurophysiological mechanisms underlying the encoding and retrieval of episodic memories may remain the same across different states of consciousness. More directly, some studies on adults point to shared neural mechanisms between waking cognition and corresponding dream features. A general decline in the dream recall frequency is commonly reported in the elderly, and it is explained in terms of a diminished interest in dreaming and in its emotional salience. Although empirical evidence is not yet available, an alternative hypothesis associates this reduction to an age-related cognitive decline. The state of the art of the existing knowledge is partially due to the variety of methods used to investigate dream experience. Very few studies in elderly and no investigations in childhood have been performed to understand whether dream recall is related to specific electrophysiological pattern at different ages. Most of all, the lack of longitudinal psychophysiological studies seems to be the main issue. As a main message, we suggest that future longitudinal studies should collect dream reports upon awakening from different sleep states and include neurobiological measures with cognitive performances. Keywords: dreaming, sleep mentation, development, sleep, continuity hypothesis, aging

Dreams are usually characterized by primary consciousness, bizarreness and cognitive deficits, lacking metacognition. However, lucid dreaming (LD) is a type of consciousness state during which the dreamer is aware of the fact that he or she is dreaming, without leaving the sleeping state. Brain research has found that LD shares some common neural mechanisms with metacognition such as self-reflection. With a different metacognition level, the bizarreness of LD would also change. However, the difference in bizarreness between LD and non-LD was seldom explored, and individual differences were often neglected. In the present study, considering LD prevalence in Asia was rarely studied and related results in China and Japan were very different from each other, we first investigated the LD frequency of China in a standardized way. On that basis, we collected dreams of subjects who had relatively higher LD frequency and compared bizarreness density (BD) of LD and non-LD. Moreover, to explore the relationships of metacognition traits and BD, we also measured self-reflection and insight trait by Self-Reflection and Insight Scale. We found that 81.3% of subjects have experienced LD once or more, which is similar to findings in some western countries. Besides, BD was significantly lower in LD than in non-LD. Self-reflection and insight were inversely associated with dream bizarreness. These findings indicate that self-consciousness traits extend from waking to LD and non-LD state. As a particular consciousness state, LD may shed light on the research of consciousness and dream continuity. Future research on dream bizarreness is suggested to take dream types and metacognition differences into consideration.

In addition to a large variety of somatic symptoms, fever also affects cognition, sleep, and mood. In an online survey with 164 participants, 100 fever dream reports were submitted. Fever dreams were more bizarre and more negatively toned and included more references to health and temperature perception compared to “normal” most recent dreams – findings that are in line with the continuity hypothesis of dreaming. Future studies should follow up this line of research by conducting diary studies during naturally occurring febrile illnesses and sleep laboratory studies with experimentally induced fever. It would also be very interesting to study the effect of thermal stimulation applied during sleep on dream content. This research helps to understand subjective experiences while sleeping in an extreme condition (elevated body temperature).

In addition to a large variety of somatic symptoms, fever also affects cognition, sleep, and mood. In an online survey with 164 participants, 100 fever dream reports were submitted. Fever dreams were more bizarre and more negatively toned and included more references to health and temperature perception compared to "normal" most recent dreams – findings that are in line with the continuity hypothesis of dreaming. Future studies should follow up this line of research by conducting diary studies during naturally occurring febrile illnesses and sleep laboratory studies with experimentally induced fever. It would also be very interesting to study the effect of thermal stimulation applied during sleep on dream content. This research helps to understand subjective experiences while sleeping in an extreme condition (elevated body temperature). [ABSTRACT FROM AUTHOR]

Dreams are usually characterized by primary consciousness, bizarreness and cognitive deficits, lacking metacognition. However, lucid dreaming (LD) is a type of consciousness state during which the dreamer is aware of the fact that he or she is dreaming, without leaving the sleeping state. Brain research has found that LD shares some common neural mechanisms with metacognition such as self-reflection. With a different metacognition level, the bizarreness of LD would also change. However, the difference in bizarreness between LD and non-LD was seldom explored, and individual differences were often neglected. In the present study, considering LD prevalence in Asia was rarely studied and related results in China and Japan were very different from each other, we first investigated the LD frequency of China in a standardized way. On that basis, we collected dreams of subjects who had relatively higher LD frequency and compared bizarreness density (BD) of LD and non-LD. Moreover, to explore the relationships of metacognition traits and BD, we also measured self-reflection and insight trait by Self-Reflection and Insight Scale. We found that 81.3% of subjects have experienced LD once or more, which is similar to findings in some western countries. Besides, BD was significantly lower in LD than in non-LD. Self-reflection and insight were inversely associated with dream bizarreness. These findings indicate that self-consciousness traits extend from waking to LD and non-LD state. As a particular consciousness state, LD may shed light on the research of consciousness and dream continuity. Future research on dream bizarreness is suggested to take dream types and metacognition differences into consideration. [ABSTRACT FROM AUTHOR]

La présente étude rend compte de la fréquence, du contenu et du ton émotionnel des rêves érotiques en se basant sur le journal intime des rêves d'un échantillon d'étudiants allemands. Quatre cent vingt-cinq élèves ont transmis 1612 rêves, dont environ 6 % portaient sur des thèmes érotiques, un chiffre conforme aux recherches antérieures. Quant au contenu du rêve, le baiser était l'activité érotique la plus fréquente, suivi des rapports sexuels et des préliminaires sexuels explicites. L'ouverture à l'expérience est positivement liée à la fréquence des rêves érotiques ; le neuroticisme et la conscience sont associés à une tonalité émotionnelle plutôt négative pour de tels rêves. Cela confirme l'hypothèse de continuité selon laquelle l'expérience érotique du rêve reflète l'activité sexuelle de la vie éveillée, qui est susceptible d'être influencée par ces dispositions de la personnalité. D'autres recherches devraient approfondir la connaissance des aspects et de l'intensité émotionnelle de l'activité sexuelle du moment où l'on se réveille et leurs reflets dans les rêves érotiques, c'est-à-dire si les événements sexuels indésirables et mal perçus sont associés au ton affectif des rêves érotiques. Pour étudier la causalité de la relation entre l'activité sexuelle éveillée et rêvée et les émotions qui y sont liées, une étude expérimentale serait une approche nécessaire. The present study reports about the frequency, content and emotional tone of erotic dreams based on dream diary reports of a German college student sample. Four hundred and twenty-five students provided 1612 dreams, of which about 6% contained erotic themes, a figure which is in line with previous research. As for the dream content, kissing was the most frequent erotic activity, followed by intercourse and explicit sexual foreplay. Openness to experience is positively related to the frequency of erotic dreams; neuroticism and conscientiousness are associated with a rather negative emotional tone of such dreams. This supports the continuity hypothesis stating that erotic dreaming experience reflects waking life sexual activity, which is likely to be influenced by these personality dispositions. Further research should extend the knowledge of the aspects and emotional intensity of waking life sexual activity and their reflection in erotic dream content, i.e., whether experiencing unwanted and negatively perceived sexual events are associated with the emotional tone of erotic dreams. To investigate the causality of the relation between waking and dreaming sexual activity and the emotions related to it, an experimental study would be a necessary approach. [ABSTRACT FROM AUTHOR]

The present study reports about the frequency, content and emotional tone of erotic dreams based on dream diary reports of a German college student sample. Four hundred and twenty-five students provided 1612 dreams, of which about 6% contained erotic themes, a figure which is in line with previous research. As for the dream content, kissing was the most frequent erotic activity, followed by intercourse and explicit sexual foreplay. Openness to experience is positively related to the frequency of erotic dreams; neuroticism and conscientiousness are associated with a rather negative emotional tone of such dreams. This supports the continuity hypothesis stating that erotic dreaming experience reflects waking life sexual activity, which is likely to be influenced by these personality dispositions. Further research should extend the knowledge of the aspects and emotional intensity of waking life sexual activity and their reflection in erotic dream content, i.e., whether experiencing unwanted and negatively perceived sexual events are associated with the emotional tone of erotic dreams. To investigate the causality of the relation between waking and dreaming sexual activity and the emotions related to it, an experimental study would be a necessary approach. [ABSTRACT FROM AUTHOR]

Erotic topics are common in dreams. This study's objective was to find and explain factors influencing the frequency of these erotic dreams using an online survey in a German sample with a broad age range. 2907 participants estimated what percentage of their recalled dreams contained erotic motifs and provided both demographic and dream related information. On average, participants estimated that 18 percent of their dreams are erotic-related. This mean value was higher than the figures of previous diary studies. While men's dreams contain erotic themes more often than women's and a younger age increased erotic dream frequency, the education of the participants had no influence on the percentage of erotic dreams. Referring to the continuity hypothesis, gender differences can be explained with the amount of time spent with sexual thoughts and fantasies in waking life and increased with the participant's age, suggesting a cohort effect. Future research should investigate the relationship between erotic dreaming and variables like personality, psychopathology, and physiological measures like testosterone. [ABSTRACT FROM AUTHOR]

Although gender differences in the dreams of adults have been studied extensively, large-scale studies in children and adolescents are scarce. The UK Library Study collected 1,995 most recent dreams of children and adolescents. Boys reported more physical aggression and fewer female characters in their dreams, whereas indoor settings were more prominent in girls' dreams, results that are consistent with the findings in adults and the continuity hypothesis of dreaming. The study indicates that dream content analysis is a valuable tool for studying the inner world of children and adolescents because dreams reflect their waking life experiences, thoughts, and concerns. It would be informative to include measures of waking life aggression, frequency of social contacts, and leisure time activities to provide evidence for direct links between waking and dreaming. [ABSTRACT FROM AUTHOR]

Highlights • Hypotheses from the Social Simulation Theory of dreaming were tested. • A novel content analysis method, the Social Content Scale, was developed. • Dreams were found to contain more social interactions than corresponding waking life. • Prosocial social simulations were not specifically aimed at familiar persons. • REM and NREM reports did not differ in prosocial or aggressive interactions. Abstract Social Simulation Theory (SST) considers the function of dreaming to be the simulation of social events. The Sociality Bias and the Strengthening hypotheses of SST were tested. Social Content Scale (SCS) was developed to quantify social events. Additionally, we attempted to replicate a previous finding (McNamara et al., 2005, Psychological Science) of REM dreams as predisposed to aggressive, and NREM dreams to prosocial interactions. Further, we investigated the frequency and quality of interactions in late vs early REM and NREM dreams. Data consisted of wake, REM and NREM home dream reports (N = 232, 116, 116, respectively) from 15 students. Dreams overrepresented social events compared to wake reports, supporting the Sociality Bias hypothesis. However, the Strengthening Hypothesis was not supported. We weren't able to replicate the McNamara et al. finding, and no time of night effect was found. While SST gained partial support, further research on social contents in dreams is required. [ABSTRACT FROM AUTHOR]

Teeth dreams (TD), i.e., dreams of teeth falling out or rotting, are one of the most common and universal typical dream themes, yet their source remains unknown and they have rarely been studied empirically. They are especially enigmatic as they do not readily fall under the rubric of the “continuity hypothesis”, i.e., dreams of current and salient waking-life experiences. The aim of the present study was to explore two possible hypotheses for the origin of TD; specifically, TD as incorporation of dental irritation into dreaming, and TD as a symbolic manifestation of psychological distress. Dream themes, dental irritation, psychological distress, and sleep quality were assessed among 210 undergraduates. TD were related to dental irritation (specifically, tension sensations in the teeth, gums, or jaws upon awakening), whereas other dream types were not. Conversely, TD were unrelated to psychological distress, whereas other dream types were (specifically, dreams of being smothered and dreams of falling). This disparity in the correlates of TD existed despite a small but significant relationship between psychological distress and dental irritation. Albeit preliminary, the present findings support the dental irritation hypothesis and do not support the symbolic hypothesis regarding the origins of TD. Research on TD portrays one path through which the mind may distort somatosensory stimuli and incorporate them into dreams as a vivid and emotionally salient image; these preliminary findings highlight the potential of studying TD in order to broaden our understanding of the cognitive mechanisms governing dream production.

Correlations between memories and dreaming has typically been studied by linking conscious experiences and dream reports, which has illustrated that dreaming reflects waking life events, thoughts, and emotions. As some research suggests that sleep has a function of memory consolidation, and dreams reflect this, researching this relationship further may uncover more useful insights. However, most related research has been conducted using the self-report method which asks participants to judge the relationship between their own conscious experiences and dreams. This method may cause errors when the research purpose is to make comparisons between different groups, because individual differences cannot be balanced out when the results are compared among groups. Based on a knowledge of metaphors and symbols, we developed two operationalized definitions for independent judges to match conscious experiences and dreams, the descriptive incorporation and the metaphorical incorporation, and tested their reliability for the matching purpose. Two independent judges were asked to complete a linking task for 212 paired event-dreams. Results showed almost half dreams can be matched by independent judges, and the independent-judge method could provide similar proportions for the linking task, when compared with the self-report method.

Teeth dreams (TD), i.e., dreams of teeth falling out or rotting, are one of the most common and universal typical dream themes, yet their source remains unknown and they have rarely been studied empirically. They are especially enigmatic as they do not readily fall under the rubric of the "continuity hypothesis", i.e., dreams of current and salient waking-life experiences. The aim of the present study was to explore two possible hypotheses for the origin of TD; specifically, TD as incorporation of dental irritation into dreaming, and TD as a symbolic manifestation of psychological distress. Dream themes, dental irritation, psychological distress, and sleep quality were assessed among 210 undergraduates. TD were related to dental irritation (specifically, tension sensations in the teeth, gums, or jaws upon awakening), whereas other dream types were not. Conversely, TD were unrelated to psychological distress, whereas other dream types were (specifically, dreams of being smothered and dreams of falling). This disparity in the correlates of TD existed despite a small but significant relationship between psychological distress and dental irritation. Albeit preliminary, the present findings support the dental irritation hypothesis and do not support the symbolic hypothesis regarding the origins of TD. Research on TD portrays one path through which the mind may distort somatosensory stimuli and incorporate them into dreams as a vivid and emotionally salient image; these preliminary findings highlight the potential of studying TD in order to broaden our understanding of the cognitive mechanisms governing dream production. [ABSTRACT FROM AUTHOR]

Das Thema Beziehung spielt in Träumen eine große Rolle; bei Personen mit fester Partnerschaft kommt in ca. 20 bis 30 % der erinnerten Träume der Partner/die Partnerin vor. Dabei handelt es sich um gemeinsame Aktivitäten, Gespräche und erotische Aktivitäten. In Traumserien lässt sich zeigen, dass nach Ende der Beziehung die Häufigkeit der Partnerträume abnimmt, jedoch auch nach Jahren der Partner/die Partnerin noch im Traum auftritt. Auch das Sprechen über Träume ist in Partnerschaften recht häufig. Erste Studien zeigen, dass der Austausch über Träume die Beziehungsqualität verbessern kann. Hier ist die Empfehlung, Träume nur zu erzählen und nicht zu deuten. Auch in der Paartherapie kann die Arbeit mit Träumen sehr hilfreich sein, weil das Sprechen über Träume den Einstieg in problematische Bereiche, z. B. Eifersucht, erleichtert. Allerdings steht die Forschung in diesem Gebiet erst am Anfang. [ABSTRACT FROM AUTHOR]

A connection between music and dreams has been reported in many cultures. Although inspirations by dreams were reported for famous musicians, there are few studies investigating the occurrence of music dreams in the general population. In the present online study, 1,966 participants filled out an online questionnaire concerning their involvement in music in waking and the occurrence of music in dreams. The basic framework for the study was the continuity hypothesis of dreaming; that is, more musical activity during waking should be related to a higher amount of music dreams. About 6% of all remembered dreams contained music, and the frequency was significantly higher when the participants spent time with music activities in waking like singing, playing an instrument, or listening actively to music-supporting the continuity hypothesis. In addition, music dreams were associated with more positive emotions. Future research should study the effects of music in waking on music in dreams over a longer period of time (dream diaries), as well as the dreams of professional musicians. [ABSTRACT FROM AUTHOR]

Correlations between memories and dreaming has typically been studied by linking conscious experiences and dream reports, which has illustrated that dreaming reflects waking life events, thoughts, and emotions. As some research suggests that sleep has a function of memory consolidation, and dreams reflect this, researching this relationship further may uncover more useful insights. However, most related research has been conducted using the self-report method which asks participants to judge the relationship between their own conscious experiences and dreams. This method may cause errors when the research purpose is to make comparisons between different groups, because individual differences cannot be balanced out when the results are compared among groups. Based on a knowledge of metaphors and symbols, we developed two operationalized definitions for independent judges to match conscious experiences and dreams, the descriptive incorporation and the metaphorical incorporation, and tested their reliability for the matching purpose. Two independent judges were asked to complete a linking task for 212 paired event-dreams. Results showed almost half dreams can be matched by independent judges, and the independent-judge method could provide similar proportions for the linking task, when compared with the self-report method. [ABSTRACT FROM AUTHOR]