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Due to light absorption and scattering underwater images suffer from low contrast, color distortion, blurred details, and uneven illumination, which affect underwater vision tasks and research. Therefore, underwater image enhancement is of great significance in vision applications. In contrast to existing methods for specific underwater environments or reliance on paired datasets, this study proposes an underwater multiscene generative adversarial network (UMGAN) to enhance underwater images. The network implements unpaired image-to-image translation between the underwater turbid domain and the underwater clear domain. It has a great enhancement impact on several underwater image types. Feedback mechanisms and a noise reduction network are designed to optimize the generator and address the issue of noise and artifacts in GAN-produced images. Furthermore, a global–local discriminator is employed to improve the overall image while adaptively modifying the local region image effect. It resolves the issue of over- and underenhancement in local regions. The reliance on paired training data is eliminated through a cycle consistency network structure. UMGAN performs satisfactorily on various types of data when compared quantitatively and qualitatively to other state-of-the-art algorithms. It has strong robustness and can be applied to various enhancement tasks in different scenes. [ABSTRACT FROM AUTHOR]

Similar to traditional luxuries, affordable luxuries enjoy a high level of perceived product quality and perceived social status, but the effectiveness of price promotions of purchasing affordable luxury products is different from that of traditional luxuries. In order to further investigate the purchases of affordable luxuries, we used event-related potential (ERP) technology to reveal the formation of the purchase intention toward affordable luxuries at original prices (high or low) and current prices (discounted or non-discounted). Compared with the high-priced affordable luxury without a price promotion and the low-priced affordable luxury with a price promotion, consumers showed a stronger intention toward the high-priced affordable luxury with a price promotion, by weighing up three factors, perceived product quality, perceived social status, and perceived monetary saving at the behavioral level. A shorter reaction time emerged in the price promotion condition than in the absent price promotion condition when the original price was low. At the neural level, a decrease in N2 amplitude was found in the high original price and discounted current price condition than the high original price and non-discounted current price condition and the low original price and discounted current price condition, respectively, suggesting that the price information of the latter two conditions might not be the expectation information of subjects, and thus, the enhanced conflict is produced. The high-priced affordable luxury product without a price discount evoked a more positive LPP amplitude than the high-priced affordable luxury product with price promotions or than the low-priced affordable luxury item without price promotions, demonstrating that participants could regard the former as an evaluative inconsistent condition and the latter as evaluative consistent conditions. These results are helpful to better understand the effects of price promotions on purchasing affordable luxury products at different original prices. [ABSTRACT FROM AUTHOR]

There is a connection between the frontal negative slow wave (FNSW) and the arousal inhibition in the hedonic purchase context. To calculate the FNSW (400–800 ms), event-related potentials (ERPs) method was applied to depict the neural substrates on prudent and impulsive consumers' behaviors within various states of promotion. Promotion types include the pure price promotion and the mixed promotion (a mixture of a charitable donation and a discount). Behaviorally, consumers response more quickly in the pure price promotion condition and they express a preference for the mixed promotion. More importantly, a larger FNSW emerged in the impulsive consumers than the prudent, suggesting that the former might tend to control their eagerness to consume hedonic items. Compared with the price promotion as the worse option, the mixed promotion as the better option caused more perceptual conflict, leading to an increase in N2 amplitude. It suggests that consumers incline to reject the worse offers. These results also reveal that people primarily have to search negative promotion information by their insight and subsequently impulsive consumers inhibit the responses to the promotion information. The method of ERPs and FNSW should be helpful for marketing researchers and professionals on hedonic consumption and sales promotion. [ABSTRACT FROM AUTHOR]

Due to consuming hedonic products unnecessary to basic well-being, consumers need justifications for pleasure. However, different justifications have differential influences in promoting hedonic purchases, such as price and quantity promotions (PP and QP), the difference being that the latter requires purchasing additional units to get the same discount as the former. In the present study, even-related potentials (ERPs) was applied to reveal the timing of brain activities to further understand how promotion information consisting of promotion type (PP and QP) and discount depth, deep and shallow discounts (DD and SD) on hedonic products was processed. Behaviorally, consumers were more willing to purchase items in PP and DD conditions than QP and SD conditions, respectively, and spent more time making final purchase decisions in QP and DD condition or PP and SD condition compared to PP and DD condition. Neurophysiologically, DD automatically recruited more attentional resources than SD and led to a higher P2 amplitude. QP and DD condition or PP and SD condition evoked a larger N2 amplitude and enhanced perceptual conflict compared to PP and DD condition. During late stage, PP and DD elicited a more positive LPP amplitude in contrast to QP and SD, respectively, indicating that people have stronger purchase intention and positive affect in PP and DD contexts. These findings provided evidence for the differential influences between PP and QP and what ultimately made consumers buy hedonic products or not. [ABSTRACT FROM AUTHOR]

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• Using ERPs to study the impact of empathy with nature on green purchase behavior. • Empathy with nature could effectively promote consumers' green purchase behavior. • Empathy with nature could reduce the decision conflict when buying green products. • Empathy with nature could affect consumers' product preferences. Due to the attitude-behavior gap in green consumption, it is necessary to conduct more research on consumers' actual purchase behavior. At present, few studies have been conducted on the impact of empathy with nature on green purchase behavior. This research explored the underlying neural mechanism of empathy with nature on consumers' green purchase decisions by applying the event-related potentials (ERPs) approach. Behaviorally, compared with the control group, the experimental group had a higher purchase rate of green products and spent less time when buying green products. For the experimental group, buying green products required less time than buying traditional products. At the neural level, when buying green products, the N2 and N400 amplitudes of the experimental group were smaller than those of the control group. For the experimental group, buying green products elicited a smaller N2 amplitude than buying traditional products. These findings suggested that empathy with nature could reduce consumers' decision conflict when buying green products, thereby promoting consumers' green purchase behavior. [ABSTRACT FROM AUTHOR]

Previous studies showed that the Confusion Assessment Method based delirium severity evaluation tool (CAM-S) had good reliability and validity. However, there is no Chinese version of the CAM-S. Therefore, we set out to perform a prospective investigation in older Chinese patients who had total joint replacement surgery under general anesthesia in Tenth People's Hospital in Shanghai, P.R. China. A total of 576 participants, aged 60 years or older, were screened, 179 participants were enrolled, and 125 of them were included for the final analysis. Pre-operative evaluations were conducted one day before the surgery. Postoperative evaluations were conducted twice daily from postoperative day 1 to day 3. The incidence of postoperative delirium was 24.8%. The Chinese version of CAM-S [including a Short Form (CAM-S Short Form) and a Long Form (CAM-S Long Form)] had an optimal reliability reflected by internal consistency (Cronbach's α= 0.748 and 0.839 for CAM-S Short Form and CAM-S Long Form respectively), split-halves reliability (Pearson correlation coefficient = 0.372 and 0.384 for CAM-S Short Form and CAM-S Long Form respectively), and inter-rater reliability (intra-class correlation coefficients = 0.629 and 0.945 for CAM-S Short Form and CAM-S Long Form respectively). Additionally, the Chinese version of CAM-S also showed a good discriminate validity. The domain scores of CAM-S were inversely correlated with corresponding domain scores of the MMSE. Finally, a receiver operating characteristic (ROC) analysis obtained an optimal cutoff point of 2.5 for CAM-S Short Form and 3.5 for CAM-S Long Form in recognizing delirium diagnosed by CAM. The areas under the ROC were 0.989 (95% CI 0.972 - 1.000, p < 0.001) and 0.964 (95% CI 0.946 - 0.982, p < 0.001), respectively. These data suggest that the Chinese version of CAM-S has good reliability and validity in evaluating postoperative delirium in geriatric Chinese patients and may be a useful tool to assess the severity of delirium. [ABSTRACT FROM AUTHOR]

• The time course of ERPs responses to the expertise congruency effect in ads was examined. • The cognitive process comprises an early conflicted perception and later memory recollection stage. • Stimulating pairs of athlete star and sport brand triggered a more negative N2 and positive LPP compared to the other pairs. • The N2 mainly reflects the conflict process of celebrity-brand, and the LPP refers to the recollection process of the expertise association. Celebrity/brand endorsement is omnipresent and has great influence on consumers. In the current study, the event-related potentials (ERPs) were utilized to explore the neural process underlying how expertise congruency effect matters in ads. Twenty-five participants (two excluded) were recruited to accept or refuse the brands (stimulus 2) endorsed by celebrities (stimulus 1) during a S1–S2 paradigm. Behavioral results indicated significant differences in the acceptance rates and reaction time, while ERPs component provided further insight into the cognitive processing: early conflicted perception and later memory recollection process. The results of ERPs showed that, when the celebrity is an athlete star, presenting a sport brand (AS, expertise congruity) triggered a less negative N2 and a larger LPP component compared to a leisure brand (AL, expertise incongruity) but not different with singer star (SS and SL, expertise neutrality). We suggested the N2 may reflect the conflict process of celebrity-brand, while the LPP may demonstrate the recollection process of expertise association in memory. Such findings implied that a more fluent processing (smaller N2 and larger LPP) and prominent performances could be obtained in an expertise congruity scenario, which deepened our understanding of expertise congruency effect in advertising. [ABSTRACT FROM AUTHOR]