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| Research article summary (published 24 May 2009): |
Predictors of individual visual memory decline after unilateral anterior temporal lobe resection.
Full Abstract
BACKGROUND: Different types of neuropsychological visual memory tasks have been created to quantify deficits associated with right hemisphere dysfunction. There are reports of visual memory impairment after right anterior temporal lobe resection (ATR) compared to left ATR for the processing of faces, abstract designs, and spatial locations, but there are also studies showing no between-group differences. One potential reason for the conflicting results is the use of group mean changes, which mask individual differences. METHODS: Proportions of individual subjects with decline, no change, or improvement in memory for spatial locations, abstract designs, and unfamiliar faces were evaluated in 83 individuals who underwent a standard ATR (47 right, 36 left) and were left hemisphere language dominant. RESULTS: Type of visual memory ability was an important factor as there were differential individual declines found for memory for spatial locations after right ATR compared to left ATR (27.3% vs 5.9%), but not memory for abstract designs or face memory. Logistic regression indicated that the odds of a spatial memory decline were six times higher for patients who underwent right ATR than left ATR. CONCLUSIONS: Memory for spatial locations appears to be particularly vulnerable to decline when a patient undergoes right-anterior temporal lobe resection (ATR) and when the patient has better spatial memory before surgery. Results provide proportions of subjects with significant change to help clinicians and patients make better informed decisions about risks associated with undergoing right ATR.
Author information
Author/s: Dulay, M F (MF); Levin, H S (HS); York, M K (MK); Mizrahi, E M (EM); Verma, A (A); Goldsmith, I (I); Grossman, R G (RG); Yoshor, D (D);
Affiliation: Department of Neurosurgery, The Methodist Neurological Institute, Houston, TX 77030, USA. mdulay(-atsign-)tmhs.org
Journal and publication information
Publication Type: Journal Article
Journal: Neurology (Neurology), published in United States. (Language: eng)
Reference: 2009-May; vol 72 (issue 21) : pp 1837-42
Dates: Created 2009/05/27; Completed 2009/06/25;
PMID: 19470966, status: MEDLINE (last retrieval date: 6/25/2009, IMS Date: )
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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