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Significance of unilateral ear extinction on the dichotic listening test

1995; Taylor & Francis; Volume: 17; Issue: 1 Linguagem: Inglês

10.1080/13803399508406575

1744-411X

Christopher L. Grote, Serge Pierre‐Louis, Michael Smith, Richard J. Roberts, Nils R. Varney,

Neural and Behavioral Psychology Studies

Abstract The association between unilateral ear extinction on the dichotic listening test and the lateralization of epileptogenic foci was examined in a sample of 49 seizure patients undergoing preoperative evaluation for epilepsy surgery. Results from patients who were left hemisphere dominant for speech indicated that right ear impairment was always predictive of a unilateral left hemisphere focus, but left ear extinction was associated with unilateral lesions of either hemisphere. In this patient sample, dichotic listening performance reflected an interaction of both lateralized foci and hemispheric preference of language processing. Implications concerning clinical use of the dichotic listening test are discussed.