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Differential lateralization of memory discrimination and response bias in temporal lobe epilepsy patients
Differential lateralization of memory discrimination and response bias in temporal lobe epilepsy patients JOURNAL OF THE INTERNATIONAL NEUROPSYCHOLOGICAL SOCIETY Glosser, G., Deutsch, G. K., Cole, L. C., Corwin, J., Saykin, A. J. 1998; 4 (5): 502-511Abstract
Recognition memory for words and designs was assessed in epilepsy patients who underwent unilateral anterior temporal lobectomy. Memory was assessed during the intracarotid amobarbital test (IAT) performed prior to surgery and also following surgery. Memory discrimination and response bias lateralized differently. Memory discrimination, or memory accuracy, lateralized as a function of the type of material used in memory testing. Left temporal lobe lesions resulted in more impaired discrimination of verbal materials; right temporal lobe lesions resulted in more impaired discrimination of visuospatial materials. Response bias, the decision rule adopted in situations of uncertainty, was more liberal following left temporal lobe lesions for both verbal and visuospatial materials. Findings suggest that the two cerebral hemispheres are differentially specialized for encoding different types of information in long term memory, and that this impacts on decision strategies in situations of memory uncertainty.
View details for Web of Science ID 000076001000009
View details for PubMedID 9745239