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Abstract:
Two different ERP components were used to investigate the
temporal processing of semantic and phonological encoding in
language production. Participants saw pictures and carried out a
dual choice go/nogo decision based on semantic information (i.e.,
whether the picture shows an object or an animal) and phonological
information (i.e., whether the picture's name starts with a vowel
or a consonant). Besides the already established LRP (related to
response preparation, see Van Turennout et al., 1997, 1998), we
introduce the N200 (presumably related to response inhibition) as a
tool to measure on-line language processing. Both, the LRP and the
N200 indicated that semantic processing began earlier than
phonological processing. The results of LRP and N200 together favor
a serial or cascaded processing model of language production in
contrast to a parallel processing account.
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