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Abstract:
Abstract: One central question in psycholinguistic research
is when the various information types (conceptual/semantic,
syntactic, and phonological information) involved in speaking
become available during the speech planning process, i.e. whether
different kinds of information are accessed simultaneously or
serially. Here we investigated the relative time courses of
conceptual and syntactic encoding in an implicit picture-naming
task via event-related brain potential (ERP) recordings.
Participants viewed a series of pictures and made dual choice
go/nogo decisions based on each picture's conceptual
features(whether the depicted item was heavier or lighter than 500
gram)and syntactic features (whether the picture's German name had
feminine or masculine syntactic gender). In support of serial
models of speech production, both the lateralized readiness
potential or LRP (related to response preparation) and the N200
(related to response inhibition) measures indicated that conceptual
processing began about 80 ms earlier than syntactic
processing.
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