Time course of brain activation during graphemic/phonologic processing in reading: An ERP study  

Oleh:

Proverbio, Alice Mado ; Zani, Alberto

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 87 no. 3 (2003), page 412-420.
Topik: Language; Reading; Phonologic processing; Grapheme/phoneme conversion; ERPs; Left hemisphere; Hemispheric asymmetry; Temporal sites; Inferior frontal sites
Fulltext: 87_03_Proverbio.pdf (212.64KB)

Isi artikel

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.

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