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Speech lateralization assessed by concurrent task performance

, : Speech lateralization assessed by concurrent task performance. Neuropsychologia 20(4): 383-390

A sequential button-pressing tank using the left or right hand while concurrently performing a speech task was investigated. Subjects (human) with left-hemisphere speech representation, determined by a dichotic monitoring task showed a lateralized practice effect: left-hand performance improved with practice during the speech task, but right-hand performance did not. Subjects with right-hemisphere speech representation showed disruption of either hand with concurrent speech, and no lateralized practice effect. The mechanisms mediating speech perception and speech production may not always be concordantly lateralized. A discriminant analysis of the data showed that 93% of subjects could be correctly classified according to side of representation of speech perception given the performance measures on the concurrent tasks.

Accession: 006461414

PMID: 7133378

DOI: 10.1016/0028-3932(82)90038-0

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