Event-related potential studies of cerebral specialization during reading
Brain and LanguagePublished 1 July 1982
Helen J. Neville, Marta Kutas, Albert L. Schmidt
Citations54
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TL;DR
Investigation of inter- and intrahemispheric specialization in congenitally deaf adults during a word reading task found deaf subjects (Ss) were as accurate as the hearing Ss in identifying the words; however, they did not display visual field asymmetries.
Abstract
We investigated inter- and intrahemispheric specialization in congenitally deaf adults during a word reading task. The results were compared with those obtained from a group of normally hearing subjects in a paradigm which we have shown produces reliable behavioral and event-related potential (ERP) evidence of cerebral specialization (Neville, Kutas, and Schmidt (Brain and Language, 16, 300–315 (1982)). The deaf subjects (Ss) were as accurate as the hearing Ss in identifying the words; however, they did not display visual field asymmetries. Deaf Ss' ERPs recorded over posterior brain regions were similar in morphology to ERPs from hearing Ss but were different in lateral distribution. At the temporal and frontal regions ERPs from deaf Ss differed from those of hearing Ss in both morphology and lateral distribution. In particular, the negative (410 msec)-positive shift prominent in the left hemisphere of hearing Ss was not evident in deaf Ss. Testable hypotheses concerning the factors which may have determined the different pattern of cerebral organization in the deaf Ss are discussed.
Keywords
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