J Neurol Neurosurg Psychiatry. 1999 Oct;67(4):532-4.

Verbal memory impairment after left insular cortex infarction.

Manes F, Springer J, Jorge R, Robinson RG.

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Department of Psychiatry, University of Iowa College of Medicine, Iowa City, Iowa, USA. ffm21@cam.ac.uk

Abstract

PET studies have shown an association between changes in blood flow in the insular cortex and verbal memory. This study compared verbal memory profiles between a group of four right handed patients with right insular infarction and a group of six right handed patients with left insular infarction. Patient groups were comparable in age, education, and sex. Patients were administered memory tests about 4-8 weeks poststroke. Patients with left insular lesions showed significantly poorer immediate and delayed verbal memory as measured by story A of the WMS-R logical memory I (t=-2.73, p<0.03) and logical memory II (t=-4.1, p<0.004) subtests as well as the CERAD word list memory (delayed recall) (t=-2.4, p<0.05). These findings indicate that left insular damage is associated with poorer performance on verbal memory tasks. The findings suggest that the insula may be part of a functional network that mediates verbal memory.

PMID:: 10486407; [PubMed - indexed for MEDLINE]
PMCID:: PMC1736597

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