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

Stahl, Daniel and Parise, Eugenio and Hoehl, Stefanie and Striano, Tricia (2010) Eye contact and emotional face processing in 6-month-old infants: advanced statistical methods applied to event-related potentials. Brain and Development, 32 (4). pp. 305-317. ISSN 0387-7604

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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.

Item Type:
Journal Article
Journal or Publication Title:
Brain and Development
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2800/2806
Subjects:
ID Code:
64231
Deposited By:
Deposited On:
25 Apr 2013 12:15
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Jul 2020 11:05