King's College London

Research portal

Eye contact and emotional face processing in 6-month-old infants: Advanced statistical methods applied to event-related potentials

Research output: Contribution to journalArticle

Daniel Stahl ; Eugenio Parise ; Stefanie Hoehl ; Tricia Striano

Original languageEnglish
Pages (from-to)305 - 317
Number of pages13
JournalBrain and Development
Volume32
Issue number4
DOIs
StatePublished - Apr 2010

King's Authors

Research Groups

  • King's College London

Abstract

Event-related potential (ERP) Studies with infants are often limited by,I small number of measurements. We introduce a weighted general linear mixed model analysis with,I time-varying covariate, which allows for the efficient analysis of all available event-related potential data of infants. This method allows controlling the signal to noise ratio effect on averaged ERP estimates due to small and varying numbers of trials. The method enables analyzing ERP data sets of infants, Which Would often not be possible otherwise. We illustrate this method by analyzing an experimental study and discuss the advantages in comparison to currently used methods as well as its potential limitations. In this Study, 6-month-old infants saw a face showing I neutral or an angry expression in combination with direct or averted eye gaze. We examined how the infant brain processes facial expressions and whether the direction of eye gaze has an influence oil it. We focused Oil the infant Negative Central ERP component (Nc). The neutral expression elicited larger amplitude and peaked earlier than the angry expression. An interaction between emotion and gaze was found for Nc latency, Suggesting that emotions are processed in combination with eye gaze in infancy. (C) 2009 Elsevier B.V. All rights reserved.

View graph of relations

© 2015 King's College London | Strand | London WC2R 2LS | England | United Kingdom | Tel +44 (0)20 7836 5454