Event-related potentials to changes in facial expression in two-phase transitions.

ABSTRACT: The purpose of the study was to compare event-related potentials (ERPs) to different transitions between emotional and neutral facial expressions. The stimuli contained a single transition between two different images of the same face, giving a strong impression of changing expression though apparent motion whilst eliminating change in irrelevant stimulus variables such as image contrast or identity. Stimuli were calibrated for intensity, valence and perceived emotion category and only trials where the target emotion was correctly identified were included. In the first experiment, a magnification change (zoom) was a control condition. Transitions from neutral to angry expressions produced a more negative N1 with longer peak latency, and more positive P2 than did an increase in magnificatio

SUBMITTER: Wright MJ 

PROVIDER: S-EPMC5391024 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature