Visual expertise for print in schizophrenia: Analysis of the N170 component

Publication date: Available online 6 August 2018

Source: International Journal of Psychophysiology

Author(s): Maxime Curzietti, Anne-Clémence Chaillou, Anne Bonnefond, Pierre Vidailhet, Nadège Doignon-Camus

Abstract

Reading deficits have been reported for patients suffering from schizophrenia namely, specific phonological processing deficits. Phonological processing skills are crucial in the learning-to-read process as they are necessary to develop visual expertise for print, which reflects the neural specialization for print. The present study is the first to test visual expertise for print in patients suffering from schizophrenia by measuring the N170 component. Patients and pair-matched healthy control participants performed a lexical decision task, in which words and symbols were presented. As expected, larger N170 amplitudes to word than to control stimuli were observed at the left occipito-temporal site PO7 but not at the PO8. More importantly, the modulation of the N170 as a function of the stimulus and hemisphere did not vary between patients and controls. This result suggests preserved visual expertise for print processing in patients suffering from schizophrenia.

Graphical abstract

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