Temporal dynamics of emotional processing: Parsing trial-wise variance of the late positive potential using Generalizability Theory.

ABSTRACT: The reliability of individual trial event-related potential (ERP) components extracted from electroencephalogram has been consistently questioned since ERP research began. This ambivalence is based on misunderstood assumptions stemming from Cronbach and Classical Test Theory. Contemporary methods allow for the reliability of individual ERP trials to be estimated and for analyses of these trial-level ERP components to be meaningfully parsed. We illustrate the use of Generalizability Theory procedures in estimating the reliability of trial-level ERPs using the late positive potential (LPP), a neural measure of motivated attention toward emotionally evocative stimuli. Individuals (N = 88) completed a passive viewing task while continuous EEG was recorded. Variability in trial-level LPP respon

SUBMITTER: Hill KE 

PROVIDER: S-EPMC9868048 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature