Facial Asymmetry and Emotional Expression

TL;DR

This paper develops a novel automated method to measure facial asymmetry in videos and investigates its relationship with emotional expression, contributing to neuropsychological understanding of emotional processing.

Contribution

The study introduces a new minimal-involvement, frame-by-frame measure of facial asymmetry and applies it to analyze its link with emotional expression.

Findings

New automated measure of facial asymmetry in videos

Established correlation between asymmetry and emotional expression

Enhanced understanding of neuropsychological aspects of emotion

Abstract

This report is about facial asymmetry, its connection to emotional expression, and methods of measuring facial asymmetry in videos of faces. The research was motivated by two factors: firstly, there was a real opportunity to develop a novel measure of asymmetry that required minimal human involvement and that improved on earlier measures in the literature; and secondly, the study of the relationship between facial asymmetry and emotional expression is both interesting in its own right, and important because it can inform neuropsychological theory and answer open questions concerning emotional processing in the brain. The two aims of the research were: first, to develop an automatic frame-by-frame measure of facial asymmetry in videos of faces that improved on previous measures; and second, to use the measure to analyse the relationship between facial asymmetry and emotional expression, and connect our findings with previous research of the relationship.