Journal
BRAIN AND LANGUAGE
Volume 87, Issue 3, Pages 412-420Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0093-934X(03)00139-1
Keywords
language; reading; phonologic processing; grapheme/phoneme conversion; ERPs; left hemisphere; hemispheric asymmetry; temporal sites; inferior frontal sites
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The present study sought to investigate the time course of brain activation during grapheme-to-phoneme conversion and phonologic processing of legal Italian syllables. To this goal, we monitored a group of right-handed native Italian volunteers performing a phonologic decision task (same/different judgments). ERPs were recorded from 28 scalp sites during silent reading. Analysis of ERP latency showed faster responses to same syllables than to different ones as early as 105 ms at left temporal electrode site and 160 ms at frontal sites. The first effect of phonologic/graphemic incongruity on the amplitude of ERPs was observed at lateral occipital/posterior temporal sites (N185), where physiologic responses were enhanced to incongruous syllables. (C) 2003 Elsevier Science (USA). All rights reserved.
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