Journal
NEUROPSYCHOLOGIA
Volume 46, Issue 7, Pages 1775-1786Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropsychologia.2008.03.005
Keywords
working memory; short-term memory; temporal order; parietal; simultanagnosia; Balint's syndrome; recognition; recall
Funding
- NATIONAL INSTITUTE OF MENTAL HEALTH [R01MH071615] Funding Source: NIH RePORTER
- NIMH NIH HHS [R01 MH071615, R01 MH071615-01A1, R01 MH071615-01] Funding Source: Medline
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Neuroimaging evidence suggests that the parietal lobe has an important role in memory retrieval, yet neuropsychology is largely silent on this topic. Recently, we reported that unilateral parietal lobe damage impairs various forms of visual working memory when tested by old/new recognition. Here, we investigate whether parietal lobe working memory deficits are linked to problems at retrieval. We tested two patients with bilateral parietal lobe damage in a series of visual working memory tasks that probed recall and old/new recognition. Stimuli were presented sequentially and several stimulus categories were tested. The results of these experiments show that parietal lobe damage disproportionately impairs old/new recognition as compared to cued recall across stimulus categories. The observed performance dissociation suggests that the posterior parietal lobe plays a particularly vital role in working memory retrieval. (c) 2008 Elsevier Ltd. All rights reserved.
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