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This event-related potential study focused on neural correlates of inhibitory affective control in attention-deficit hyperactivity disorder (ADHD). Sixteen boys with ADHD and 16 healthy boys underwent an emotional Go/NoGo task with pictures of facial expressions from the categories anger, sadness, happiness, and neutral. The participants were instructed to execute or withhold a motor response to specific emotions. Patients relative to controls displayed a severe impairment in response inhibition toward anger cues, which was accompanied by a reduced P300 amplitude (positive voltage deflection about 300 ms after picture onset). The control group showed a P300 differentiation of the affective categories that was absent in the ADHD group. The pronounced anger-processing deficit in ADHD patients might be linked to their interpersonal difficulties and should be addressed in psychotherapy. [ABSTRACT FROM PUBLISHER]

Background: Emotional eating has been associated with biases of attention and memory for visual food cues. This eye-tracking study investigated whether the tendency to overeat in response to sadness is associated with the inspection and recall of visual food cues.Method: Participants (n = 115, mean age = 26 years, 70 females, 45 males) viewed images depicting food and non-food. We compared gaze duration, 'hyperscanning' parameters (fixation duration, saccadic angle, scan path length), and recall performance between different image categories (high-calorie, low-calorie food, non-food) and groups with different sadness-associated eating styles (increased, decreased, unchanged food consumption during states of sadness).Results: The group with sadness-related overeating reported a higher body mass index than the other groups, but neither displayed a visual attention bias nor memory bias for food cues. We observed a prolonged gaze duration for low-calorie food cues, which were rated as more appetizing than high-calorie cues. All participants recalled more food cues (low- and high-calorie) than non-food cues independent of gaze duration.Conclusion: This study expanded previous research designs by groups that decrease vs. increase the amount eaten when feeling sad, and food/non-food images that were carefully matched for visual properties. Based on this approach, we were not able to show that self-disclosed sadness eating is associated with visual/memory biases for food images. [ABSTRACT FROM AUTHOR]

Introduction: The retrieval of autobiographical memories is influenced by several factors, such as sensory modality and the emotional salience of memory cues. This study aimed at investigating the interaction between sensory modalities (olfaction, vision) and emotional dimensions (valence, arousal) of imagery cues, on the frequency, quality, and age distribution of the autobiographical memories (AMs) elicited. Method: A total of 296 females (aged between 18 and 35 years) received one out of eight brief instructions for olfactory or visual imagery. The participants were asked to create a mental image with either high arousal/positive valence, high arousal/negative valence, low arousal/positive valence, or low arousal/negative valence (e.g., 'imagine an unpleasant and arousing odor/scene'); no specific stimulus was mentioned in the instruction. Results: The approach used elicited imagery with autobiographical content in the majority of participants (78%). In terms of frequency, odor imagery, compared to visual imagery, turned out to be more effective at retrieving either unpleasant memories associated with experiences in adulthood, or pleasant childhood memories. In terms of quality, the imagery was rated as less vivid in the olfactory compared to the visual condition (irrespective of valence and arousal of the imagery instruction). Visual imagery was associated with the experience of more diverse emotions (happiness, sadness, anxiety, anger) than odor imagery, which was related primarily with disgust and happiness. Conclusion: Our findings indicate that nonspecific imagery induction is a useful approach in accessing AM. Implication: This approach presents promising clinical applications, such as in working with autobiographical memory narratives in psychotherapy. [ABSTRACT FROM AUTHOR]

• A rubber hand can successfully be embodied after synchronous stroking, leading to increased feelings of disgust when contaminated. The Rubber Hand Illusion (RHI) refers to the feeling of ownership of a rubber hand by synchronously stroking the rubber hand and the own hand of a person. Previous research has shown that RHI can be used to simulate skin contact with a disgust-eliciting stimulus. We used a primary disgust elicitor (a living maggot) to replicate this finding and to gather data on disgust habituation during RHI, and effects on in-vivo exposure. A total of 82 healthy participants (25 males, 57 females) were randomly assigned to one of two conditions; synchronous stroking or asynchronous stroking (control condition) of the rubber/own hand. Subsequently, a maggot was placed on the rubber hand for five minutes. Participants rated experienced disgust at the beginning and end of the exposure. They were also asked if the maggot could be placed on their own hand. Synchronous stroking successfully elicited RHI, which was associated with higher disgust ratings for the maggot at the beginning of exposure compared to asynchronous stroking. The two conditions did not differ in disgust habituation and the willingness to expose the own hand to the maggot. RHI successfully simulated skin contact with a disgust stimulus. Future studies should apply longer exposure intervals and test individuals with higher disgust propensity to detect possible RHI effects on disgust habituation. [ABSTRACT FROM AUTHOR]

The interactions between social and eating behaviors can be quite pronounced and are mediated by overlapping neural circuits. The present event-related potential study tested whether the imagery of a specific prosocial behavior (giving chocolates to grateful children) can influence food cue reactivity. A total of 92 females (mean age = 23.5 years) were randomly assigned to one of three guided imagery conditions. The participants listened to an audio recording and were instructed to imagine one of three possible scenes; giving 30 M&Ms to children, eating 30 M&Ms, or sorting 30 marbles. Directly after the imagery task, the participants were presented with images of M&Ms and marbles while their electroencephalogram was recorded. We examined the Late Positive Potential (LPP) across a fronto-central and a parieto-occipital cluster, M&M craving, and subsequent consumption of (real) M&Ms. The mental imagery of offering M&Ms to children was associated with lower M&M craving and higher fronto-central LPP amplitudes (300-600 ms after picture onset) compared to the other imagery conditions. The consumption of M&Ms did not differ between the groups. The LPP is sensitive to the implementation of craving regulation strategies. Furthermore, heightened LPPs are reliably observed in response to motivationally significant stimuli, conflict, and social context. Future studies are needed to specify the specific psychological processes that are associated with the observed LPP effect. In conclusion, this study demonstrated that mental imagery of receiving a social reward from giving food to others can change components of food cue reactivity in healthy females. [ABSTRACT FROM AUTHOR]

Many patients with migraine believe weather is a trigger for their headaches. The objective of this study was to determine if very low frequency sferics, pulse-shaped electromagnetic fields originating from atmospheric discharges (lightning), are precipitating factors. The occurrence of sferics impulses is characterized by a daily, as well as an annual, periodicity and is thought to be associated with various pathological processes. The diaries of 37 women suffering from migraine and tension-type headaches were analyzed over a period of 6 months and correlated with daily sferics activity and other weather phenomena in the area of Giessen, Germany. From October through December (autumn), sferics activity was correlated with the occurrence of migraine (r = 0.33, P<.01); however, there was no correlation in July and August (summer), when the thunderstorm activity had been very intense. In summer, tension-type headaches were associated with other weather parameters such as temperature (r = 0.36, P<.01) and vapor pressure (r = 0.27, P<.05). [ABSTRACT FROM AUTHOR]

Presents evaluative conditioning as a possible explanation for the acquisition of disgust responses. Presentation of subjectively neutral pictures with disgusting pictures; Ability acquired with neural stimuli; Blood-injury fear; Heart rate; Skin conductance; Blood pressure.

While some people enjoy looking at their faces in the mirror, others experience emotional distress. Despite these individual differences concerning self-viewing in the mirror, systematic investigations on this topic have not been conducted so far. The present eye-tracking study examined whether personality traits (self-esteem, narcissism propensity, self-disgust) are associated with gaze behavior (gaze duration, fixation count) during free mirror viewing of one's face. Sixty-eight adults (mean age = 23.5 years; 39 females, 29 males) viewed their faces in the mirror and watched a video of an unknown person matched for gender and age (control condition) for 90 s each. The computed regression analysis showed that higher self-esteem was associated with a shorter gaze duration for both self-face and other-face. This effect may reflect a less critical evaluation of the faces. [ABSTRACT FROM AUTHOR]

Examines spherics in their relation to performance on a forced-choice extrasensory perception (ESP) task and to several secondary variables. Spherics as electromagnetic impulses generated by electrical discharges during thunderstorms; Effect of spherics on biological responses such as pain syndromes and reaction times; Variables that characterize spherics.

Reports on bias on the analysis of covariance and paranormal belief. Methodology of the study; Stimulus material; Dependent measures; Physiological and emotional responses; Statistical tools and methods; Data analysis; Discussion on the results.

• Time-course analysis of food cue processing via eye-tracking. • High-calorie food captured more early visual attention than low-calorie food cues. • Visual attention shifted to low-calorie food cues during a later processing stage. • Findings point to the interaction of visual context and timing for food cue processing. Previous eye-tracking research has demonstrated that high-calorie food cues capture visual attention, particularly in individuals with overweight and weight concerns. The present experiment investigated whether this attentional bias can be influenced by context variables (i.e., the presence of pleasant low-calorie cues), and changes over time. This was studied via time-course analysis. Ninety women (mean age = 25 years) were presented with 60 picture pairs (à 6 s) that either showed a combination of high-calorie food + low-calorie food, high-calorie food + non-food, or low-calorie food + non-food. The women were assigned to one of three groups (n = 30): overweight with weight concerns (OW+), normal-weight with weight concerns (NW+), normal weight without weight concerns (NW-). The relative number of fixations on (high-calorie) food cues was examined across the course of the picture pair presentations for one-second intervals. High-calorie food was fixated more often than low-calorie food and non-food only during the first second of the picture pair presentation. Subsequently, all participants (independent of the group assignment) showed the tendency to gaze on low-calorie cues when these cues were combined with high-calorie cues. This study revealed timing-related context effects on visual food cue reactivity. While the early attentional bias to high-calorie cues could not be changed by context, this was possible during the later processing stage. Future studies need to examine whether the observed context effect can influence food choices and eating behavior. [ABSTRACT FROM AUTHOR]

Individuals with reduced olfactory function (anosmia, hyposmia) have reported changes in disgust perception and disgust experience compared to normosmic controls. The current functional magnetic resonance imaging (fMRI) study investigated the neural underpinnings of the altered disgust processing. Twenty-four patients with anosmia or hyposmia and 26 normosmic controls were presented with images depicting facial expressions and scenes from the categories disgust and neutral. The disgusting scenes depicted stimuli that typically smell repulsive (spoiled food, excrements). Brain activity and structure in the primary olfactory cortex (POC) and in a region that processes affective/motivational olfactory-related information (insula, orbitofrontal cortex, basal ganglia) were compared between the two groups. The anosmic/hyposmic participants were characterized by greater activation in the POC while looking at disgusting scenes. The POC can be activated by olfactory imagery and holds predictive templates of olfactory stimuli. The neural processing of the facial stimuli did not differ between the two groups. Additionally, group differences in functional connectivity and brain structure were not present or only minor. The increased POC activation in anosmic/hyposmic patients might reflect a compensatory process that helps to compensate for their olfactory deficit. However, in general, this study identified only small adaptations in the neural disgust system as a consequence of reduced olfactory function. • Reduced olfactory function has been associated with changes in disgust perception and disgust experience. • Anosmic/hyposmic patients and controls were presented with facial expressions and scenes (disgust, neutral). • Relative to controls, patients showed greater activation in the piriform cortex while viewing disgusting scenes. • This might reflect a compensatory mechanism due to the reduced ability to detect disgust through olfaction. [ABSTRACT FROM AUTHOR]

Research on the neurobiological correlates of skin-picking disorder (SPD) has yielded inconsistent findings. The present voxel-based morphometry (VBM) study investigated whether there are two distinct subtypes of SPD based on the heterogeneity in symptom presentation. While some patients experience the process of picking as positive (e.g., soothing, rewarding), others have negative feelings (e.g., nervousness, tension). We compared grey matter volume (GMV) in regions of interest (e.g., insula) between these two groups of SPD patients. GMV data from SPD patients who described the picking process as pleasant (n = 21; SPD+) or unpleasant (n = 30; SPD-), and healthy control participants (n = 25) were compared with each other. The two SPD groups reported similar symptom severity and duration. Insular volume was found to be reduced in both SPD groups compared to the control group. The SPD-group had less GMV in the insula than the SPD + group. In the operculum, the SPD-group showed increased GMV compared to the SPD + group and the control group. The operculum and the posterior insula are involved in touch processing (differentiating self-generated from externally generated touch; attenuation vs. enhancement of touch information). This study is a first attempt to delineate SPD subtypes based on clinical and neuroanatomical features. Future research needs to demonstrate the reliability of SPD subtyping. • Delineation of two SPD subtypes based on clinical and neuroanatomical features. • Comparison of patients who experience the picking as positive or negative. • Brain volume differences in insular-opercular regions implicated in touch processing. [ABSTRACT FROM AUTHOR]

• This study investigated electrocortical effects of a context-targeting placebo. • Participants viewed (non)disgusting images in a negative context (aversive taste). • The placebo (sham light therapy of the tongue) reduced the aversive taste. • The LPP reduction (300−600 ms) by the bitter taste was attenuated by the placebo. • Placebos are able to change automatic attention allocation. An unpleasant context (bitter aftertaste) is able to reduce the late positive potential (LPP) elicited by affective pictures. This study attempted to influence this context with a placebo. Sixty-eight women were randomly assigned to three groups: Water, Bitter/No-Placebo, Bitter/Placebo. Participants in the 'bitter groups' first rinsed their mouth with wormwood tea that caused a bitter aftertaste. Subsequently, the placebo group received sham light therapy on the tongue to 'reduce the sensitivity of the taste buds'. All groups viewed disgusting and non-disgusting pictures while their electroencephalogram was recorded. The Bitter/Placebo group reported reduced bitterness and disgust for the aftertaste after the sham treatment. The LPP reduction (300−600 ms after picture onset) associated with the bitter aftertaste (as shown by the Bitter/No-Placebo group) was attenuated due to the placebo treatment. This is the first EEG study to demonstrate that a context-targeting placebo is able to change automatic attention allocation. [ABSTRACT FROM AUTHOR]

Color nutrition information (CNI) based on a traffic light system conveys information about food quality with a glance. The color red typically indicates detrimental food characteristics (e.g., very high sugar content) and aims at inhibiting food shopping and consumption. Red may, however, also elicit cross-modal associations with sweet taste, which is a preferable food characteristic. We conducted two experiments. An eye-tracking study investigated whether CNI has an effect on cue reactivity (dwell time, saccadic latency, wanting/liking) for sweet foods. The participants were presented with images depicting sweets (e.g., cake). Each image was preceded by a colored circle that informed about the sugar content of the food (red = high, green = low, gray = unknown). It was tested whether the red circle would help the participants to direct their gaze away from the 'high sugar' item. A second experiment investigated whether colored prime circles (red, green, gray) without nutrition information would influence the assumed sweetness of a food. In Experiment 1, CNI had the opposite of the intended effect. Dwell time and saccadic latency were higher for food items preceded by a red compared to a green circle. This unintended response was positively associated with participants' liking of sweet foods. CNI did not change the wanting/liking of the displayed foods. In Experiment 2, we found no evidence for color priming on the assumed sweetness of food. Our results question whether CNI is helpful to influence initial cue reactivity toward sweet foods. [ABSTRACT FROM AUTHOR]

Background: It has been shown that particular religious beliefs and practices are associated with brain function and structure. The present voxel‐based morphometry study investigated the correlation between the belief in the miracles of Lourdes (a major Catholic pilgrimage site) and gray matter volume in specific brain regions associated with theory of mind (ToM). Method: Structural brain data from 84 women (mean age: 25 years; no current somatic illness; 80% Roman‐Catholic) were correlated with self‐report measures on belief in miracles, religious–spiritual well‐being, and psychological problems. Selected brain regions of the ToM network included the temporoparietal junction (TPJ), hippocampus, amygdala, and medial prefrontal cortex (MPFC). Results: The belief in the miracles of Lourdes was positively correlated with general religiousness and with feelings of connectedness; there was no association with psychological problems. Belief in miracles of Lourdes correlated positively with TPJ volume and negatively with MPFC volume. Conclusion: Belief in the miracles was associated with brain volume in regions involved in mentalizing and self‐control. [ABSTRACT FROM AUTHOR]

Examines the correlation between the natural sferics activity and scores on an extrasensory perception (ESP) task. Symptoms triggered by sferics; Revelation of lower ESP scores during high sferics activity; Use of meta-analysis.

Many people find it difficult to practice progressive muscle relaxation (PMR) regularly. We attempted to improve relaxation quantity (i.e. adherence), and relaxation quality via placebo. A total of 100 women were randomly assigned to a standard group, which practiced PMR at home every day for two weeks, or a placebo group, which practiced PMR for two weeks with additional daily placebo treatment. To monitor adherence to relaxation practice, we used a smartphone app. The placebo group practiced more often than the standard group. Both groups did not differ in their reported relaxation level after the daily exercises. [ABSTRACT FROM AUTHOR]

Research has discovered structural differences in the brains of people with different personality types. In the present voxel-based morphometry study we focused on the association between disgust propensity (DP: the temporally stable tendency to experience disgust across different situations) and grey matter volume (GMV) in regions of interest [insula, orbitofrontal cortex (OFC), basal ganglia]. We collected structural brain scans from 498 healthy individuals (352 females, 146 males; mean age = 27 years). Regression analyses were performed to test the association between three domains of DP (core, animal-reminder, contamination) and GMV. We observed negative correlations between animal-reminder DP and the volume of the insula, and contamination DP and OFC volume. Animal-reminder DP correlated positively with GMV in the basal ganglia (putamen). This study identified weak correlations between local brain volume and disgust propensity. The association between DP and insula volume concerned the posterior insula and was in the opposite of the expected direction. The findings of this study are inconsistent with the concept of the anterior insula as a region that specifically mediates DP. [ABSTRACT FROM AUTHOR]

Studies the participation of 64 students in a simple reaction time (RT) task with and without magnetic sferics stimulation, discussing Very Low Frequency (VLF) sferics. What are sferics; Meteorological significance of sferics; Influence of VLF-sferics on an objective performance measure; Details on the study conducted; Conclusion reached based on the study.

Background: Enhanced visual food cue reactivity has been associated with overeating and weight gain [1]. Due to the increasing exposure to high-caloric food images, methods that are able to reduce the reactivity to these cues are urgently needed. Method: In the present eye-tracking study it was investigated whether the visual bias for high-caloric food can be altered via placebo treatment. Fifty-two healthy women (mean BMI = 23.5) were presented with pictures depicting combinations of food (high-caloric, low-caloric) and non-food items, which were shown once with and once without a placebo (a pill introduced as a medication targeting peptide YY that is able to reduce appetite specifically for high-caloric food). Results: The placebo reduced reported appetite, the percentage of fixations and the dwell time on food images. The placebo was not able to specifically reduce visual food cue reactivity to high-caloric stimuli. Conclusions: The placebo was able to generally reduce visual food cue reactivity. This finding encourages future studies with other samples (e.g. patients with a binge-eating disorder) and also indicates the need of adapting placebo interventions to become more specific. [ABSTRACT FROM AUTHOR]

Summary: Previous research has shown that people who endorse conspiracy theories are more prone to the conjunction fallacy: the tendency to perceive conjunct events as more probable than constituent events. The present study examined the relationship between specific beliefs (belief in conspiracy theories, religiosity) and the susceptibility to conjunction errors (CEs) in specific domains. A total of 500 participants was presented with brief scenarios from the domains "coronavirus conspiracy," "miraculous healing," and a control condition. Each scenario included one statement about a separate event and a second statement about two joint events co‐occurring. The participants estimated the probability of each statement. Results showed that the number of CEs made in the coronavirus domain was only associated with the belief in conspiracy theories, while general religiosity was only associated with CEs for scenarios describing miraculous healings. The assessed beliefs were not associated with CEs made in the control condition. Results suggest that distinct beliefs are uniquely associated with the susceptibility to conjunction errors in particular domains. [ABSTRACT FROM AUTHOR]

Diets high in added sugar can promote the development of overweight. Especially during the Holiday season, when high-sugar food is abundant, people overeat and gain more weight than during other times of the year. The present study with mobile eye-tracking glasses (Pupil Labs Invisible) investigated how sugar content information affects food preference (liking/wanting) and visual attention (where and how long one is looking) in a buffet-like situation. Fifty-eight participants who were well acquainted with the local Christmas traditions and foods (38 female, 19 male, one diverse; mean age = 25 years, SD = 6.3 years; mean body mass index = 22.2 kg/m2, SD = 3.2 kg/m2) were presented with four cookies and two non-food items (wrapped presents) in a free viewing task. Two of the displayed cookies were 'Christmas cookies' (cookies that are traditionally eaten only during the Holiday season) and two cookies had no Christmas association. The cookies were either labeled as cookies made with or without sugar, resulting in a 3 (Category: cookies with sugar, cookies without sugar, non-food) by 2 (Christmas association: yes, no) repeated-measures design. Analyses of variance indicated that participants reported higher wanting and liking for cookies with sugar, particularly Christmas cookies (interaction effect for wanting: p =.047, η p 2 =.059; interaction effect for liking: p =.017, η p 2 =.084). Sugar-free cookies were fixated more often (p =.028; d = 0.35) and shorter (p <.001; d = 0.64) than sugar cookies. Assuming that cookies are sugar-free reduced the reported preference for this product, which was associated with a more detail-oriented (critical) viewing pattern. The study's findings have potential implications for public health and can aid in developing targeted interventions to promote healthier food choices during festive periods. The new strategies should not focus on the sugar content of foods. [Display omitted] [ABSTRACT FROM AUTHOR]

The presentation of visual food cues (e.g., food plating) can affect our appetite and leads to characteristic changes of early as well as late positivity in the electroencephalogram. The present event-related potential (ERP) study attempted to change ERPs and affective ratings for food pictures by rearranging the components of a depicted meal (conventional presentation) as a smiley or frowny. The images were presented to 68 women (mean age = 24 years), who rated the wanting and liking of the meals. Compared to conventional food plating, smiley and frowny meals elicited enhanced amplitudes of the P200, P300, and late positive potential (LPP) in a large occipito-parietal cluster. Frowny meals were rated as less appetizing than conventional food presentations. The mentioned ERP components are concomitants of face configuration processing (P200), automatic attention/novelty detection (P300), and voluntary attention/assignment of emotional meaning (LPP). Thus, the combination of two affective cues (food, face) in one stimulus changed the activation in motivational circuits of the brain. Also, serving a meal as a frowny could help to regulate appetite. [ABSTRACT FROM AUTHOR]

Trypophobia has been defined as the fear and/or aversion of irregular patterns or clusters of small holes. This event-related potential study compared 20 individuals with high trypophobia proneness (TP_high: 16 women, 4 men) and 20 individuals with low TP (16 women, 4 men). All participants viewed images from four different categories: clusters of holes, generally fear-inducing, generally disgust-inducing and neutral pictures. Relative to the TP_low group, the TP_high group showed a larger parietal late positive potential (LPP; 350–900 ms) to clusters of holes. The two groups did not differ in their LPP amplitudes to the other image categories. The increased LPP displayed by TP prone individuals reflects facilitated attention to these stimuli of motivational relevance. Clusters of holes primarily elicited disgust in the TP_high group, whereas these stimuli were affectively neutral for the TP_low group. [ABSTRACT FROM AUTHOR]

In western cultures, we are surrounded by appealing visual food cues that stimulate our desire to eat, overeating and subsequent weight gain. Cognitive control of appetite (reappraisal) requires substantial attentional resources and effort in order to work. Therefore, we tested an alternative approach for appetite regulation via functional magnetic resonance imaging. Healthy, normal-weight women were presented with images depicting food (high-/low-caloric), once in combination with a bitter aftertaste (a gustatory stop signal) and once with a neutral taste (water), in a retest design. The aversive aftertaste elicited increased activation in the orbitofrontal/dorsolateral prefrontal cortex (OFC, DLPFC), striatum and frontal operculum during the viewing of high-caloric food (vs. low-caloric food). In addition, the increase in DLPFC activity to high-caloric food in the bitter condition was correlated with reported appetite reduction. The findings indicate that this aftertaste procedure was able to reduce the appetitive value of visual food cues. [ABSTRACT FROM AUTHOR]

There is growing evidence that placebos are able to influence visual perception. A previous functional magnetic resonance imaging (fMRI) study on the processing of disgust images demonstrated that a ‘disgust placebo' (inert pill administered with the verbal suggestion of an anti-nausea medication) reduced visual cortex activity and connectivity. In the present fMRI investigation, we examined corresponding visual effects of a ‘disgust nocebo' (an odorless substance introduced as an aversive smell that enhances disgust feelings). We reanalyzed data from 29 women, who viewed disgusting, fear-eliciting, and neutral images once with and once without the nocebo. In the nocebo condition with disgusting images, experienced disgust significantly increased together with fusiform gyrus activation, which showed enhanced coupling with the amygdala, and several (extra)striate cortex regions. The nocebo changed the affective value and motivational relevance of the stimuli as well the perception of basic visual features. These findings demonstrate that nocebo-related expectations can have a strong influence on the experience of sensory input. [ABSTRACT FROM AUTHOR]

The knowledge about effects of placebos and nocebos on specific visual attention processes is still very limited. In the present eye-tracking study, it was analyzed if a nocebo (sham transcranial magnetic stimulation) is able to elicit left-sided attentional deficits (pseudo-neglect). Fifty-two healthy participants performed a search task on the computer, once with and once without the nocebo. Indicators of left-biased search behavior (e.g. fixation count, reaction times for left vs. right-sided target detection) and affective state (e.g., valence, arousal) were assessed. The sample was divided into two groups (nocebo responder, non-responder) based on the experienced effectiveness of the nocebo. The nocebo treatment was associated with a positive and calm affective state. Contrary to the verbal suggestion, the nocebo increased the number of fixations and the dwell time on the left side of the computer screen. Moreover, the nocebo decreased the detection time for targets on the left side. These paradoxical nocebo effects were restricted to nocebo responders. Possible implications of nocebo-related compensatory behaviors for neuropsychological therapy are discussed. [ABSTRACT FROM AUTHOR]

Presents an abstract of the article `Atmospheric Electromagnetism: The Possible Disturbing Influence of Natural Sferics on ESP,' presented by Joop M. Houtkeeper, Anne Schienle, et al at the annual convention of the Parapsychological Association held August 6-9, 1998 in Halifax, Nova Scotia.

Responses to personal space (PS) violations are variable and depend (besides many other factors) on the sex of the person who enters this space. The neuronal basis of this effect is still largely unknown. A previous neuroimaging investigation had shown that male participants responded with increased amygdala activation to PS violation, but only when the intruder was male. Gender-specific responses by females have not been studied yet. In the present study we recorded affective as well as hemodynamic responses of 30 women (mean age: M = 27.3 years; SD = 8.1). The participants were exposed to images of neutral facial expressions from men and women. All stimuli were once shown as photos (static), and once were zoomed in (picture enlargement by the factor 2.75) in order to simulate PS intrusion. In both conditions (‘static’ and ‘approaching’ faces) the eyes and mouth region of the depicted persons were always completely visible. Approaching faces generally provoked activation of a parietal network (e.g., intraparietal sulcus, superior/inferior parietal cortex). When the approaching person was male additional amygdala activation was detected. Because the amygdala is a central structure for the initiation of defense responses, the heightened activation might reflect that male intrusion was decoded as potential threat. Hence, we observed a similar gender bias to simulated space intrusion in women as previously in men. [ABSTRACT FROM AUTHOR]

The knowledge about brain structure and function in men and women suffering from dental phobia is still limited. We compared grey matter volume (GMV) data from 36 patients suffering from dental phobia and 36 non-phobic controls via voxel-based morphometry. Half of the subjects were male, the other half female. Scores on different dental anxiety and pain questionnaires were correlated with GMV. Relative to controls, the patients had a smaller volume of the dorsomedial and dorsolateral prefrontal cortex (DMPFC/DLPFC). Within the phobic group, personal pain experience during dental treatment was negatively correlated with DLPFC volume. Sex-specific correlations were found for the amygdala and the hippocampus. Whereas in female patients GMV of both structures was positively correlated with self-reported dental anxiety, for male patients experienced dental pain was negatively associated with hippocampus volume. Our findings show that memory as well as anticipation of dental pain is associated with amygdala-hippocampal structure in men and women afflicted by dental phobia. [ABSTRACT FROM AUTHOR]

Although there is increasing evidence that cerebellar loss of grey matter volume (GMV) is associated with affective deficits, this has not been tested for patients suffering from Huntington's disease (HD), who show a pronounced impairment in the recognition of anger. We assessed GMV in 18 symptomatic HD patients and 18 healthy controls using voxel-based morphometry. The GMV of cerebellar subregions was correlated with participants' intensity and accuracy ratings for facial expressions of basic emotions from the Karolinska Directed Emotional Faces (Lundqvist et al. ). The patients gave lower and less accurate anger ratings for angry faces than controls. This anger recognition deficit was correlated with atrophy of selected hemispheric and vermal regions of the cerebellum. Furthermore, cerebellar volume reductions of the HD patients were associated with longer disease duration and greater functional impairment. The data imply that anger recognition deficits could potentially serve as indicators of disease onset and progression in HD. Furthermore, the patients might profit from specific affect trainings. [ABSTRACT FROM AUTHOR]