Identifying P100 and N170 as electrophysiological markers for conscious and unconscious processing of emotional facial expressions.

ABSTRACT:

Introduction

Everyday life requires correct processing of emotions constantly, partly occurring unconsciously. This study aims to clarify the effect of emotion perception on different event-related potentials (ERP; P100, N170). The P100 and N170 are tested for their suitability as electrophysiological markers in unconscious processing.

Methods

Using a modified backward masking paradigm, 52 healthy participants evaluated emotional facial expressions (happy, sad, or neutral) during EEG recording. While varying primer presentation time (16.7 ms for unconscious; 150 ms for conscious perception), either congruent or incongruent primer / target emotions were displayed.

Results

The N170 was significantly larger in trials with conscious compared to unconscious primer presenta

SUBMITTER: Herzberg L 

PROVIDER: S-EPMC11798883 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature