Suppression of Alpha Oscillation During Micro-expression Recognition
COMPUTER VISION - ACCV 2016 WORKSHOPS, PT I(2017)
摘要
Behavioral evidence shows that the recognition of micro-expression is impaired by emotional context, especially negative context. However, the neural oscillatory features of such emotional context effect on recognition of micro-expression remain unclear. The present study used time-frequency analysis to explore the event-related spectral perturbation (ERSP) characteristics reflected in the processing of micro-expression followed emotional contexts. In the occipital-central region, we found that emotional context modulated micro-expression spectral power in alpha band and a strong suppression of alpha oscillation was observed in negative context. This study provided spectral dynamic evidence in support of the effect of emotional context during micro-expression recognition.
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关键词
Emotional context,Micro-expression,Alpha oscillation,ERSP,Time-frequency analysis
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