The effects of XXXX on the recognition of facial expressions and microexpressions of emotion: enhanced recognition of disgust and contempt.

@entity1 @entity285 @entity19
OBJECTIVE: The study compared @entity285 's effects on the recognition of briefly displayed facial expressions of emotion (so-called microexpressions) with expressions presented for a longer period. METHOD: Using a repeated-measures design, we tested 18 @entity1 three times (counterbalanced), after (i) a placebo drink, (ii) a low-to-moderate dose of @entity285 (0.17   g/kg @entity1 ; 0.20   g/kg @entity1 ) and (iii) a moderate-to-high dose of @entity285 (0.52   g/kg @entity1 ; 0.60   g/kg @entity1 ). On each session, @entity1 were presented with stimuli representing six emotions (happiness, sadness, anger, fear, disgust and contempt) overlaid on a generic avatar in a six-alternative forced-choice paradigm. A neutral expression (1   s) preceded and followed a target expression presented for 200   ms (microexpressions) or 400   ms. @entity1 @entity19 clicked the correct answer. RESULTS: The recognition of disgust was significantly better after the high dose of @entity285 than after the low dose or placebo drinks at both durations of stimulus presentation. A similar profile of effects was found for the recognition of contempt. There were no effects on response latencies. CONCLUSION: @entity285 can increase sensitivity to expressions of disgust and contempt. Such effects are not dependent on stimulus duration up to 400   ms and may reflect contextual modulation of @entity285 's effects on emotion recognition. Copyright    2015 John Wiley _ Sons, Ltd.
