ISSN : 1226-9654
The current study utilizes negative emotional facial expressions (fearful, angry) that are known to reliably stimulate the amygdala, and investigates their effects on decision making performance in threat situations. Results indicate that there were no significant differences in terms of accuracy when the subjects were asked to search and respond to enemy troops followed by exposure to fearful versus angry facial expressions for 3 seconds. However, we observed a statistically significant difference in response times. We found that the subjects required less time to respond to the targets when they were exposed to angry facial expressions, compared to when they were exposed to fearful facial expressions. This could be explained by the some of the behavioral consequences of these emotions (angry-aggression, fear-freezing). In sum, while both are categorized as negatively valenced emotions, perceiving either fearful or angry facial expressions can differentially impact a soldier's performance in detecting and responding to enemies in hostile and threatening situations.
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