The phonological-similarity effect differentiates between two working memory tasks.

Full Abstract

Working memory is a set of interactive cognitive processes that maintain information on-line and available for analysis. Part of the system is specialized for maintaining verbal information, a core component of which is thought to be a phonological store. On the basis of the study of patients with acquired brain lesions, this store has been localized to the supramarginal and angular gyri of the speech-dominant hemisphere, and some functional neuroimaging studies support this localization. However, other imaging studies localize the phonological store in a more dorsal region of the parietal lobe. To reconcile these findings, we examined the phonological-similarity effect in two different tasks. A phonological-similarity effect was observed only in the task that involved sequential presentation and explicit verbal rehearsal. We conclude that at least one possible source of the differences in brain activation between different working memory tasks may be differences in phonological processing.

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Author information

Author/s: MacAndrew, Danean K (DK); Klatzky, Roberta L (RL); Fiez, Julie A (JA); McClelland, James L (JL); Becke, James T (JT);

Affiliation: Center for the Neural Basis of Cognition, Department of Psychology, Carnegie Mellon University, Pittsburgh, PA, USA.

Grants: MH01077 (Agency:NIMH NIH HHS) ; MH59256 (Agency:NIMH NIH HHS)

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.

Journal: Psychological science : a journal of the American Psychological Society / APS (Psychol Sci), published in United States. (Language: eng)

Reference: 2002-Sep; vol 13 (issue 5) : pp 465-8

Dates: Created 2002/09/10; Completed 2002/10/21; Revised 2007/11/14;

PMID: 12219815, status: MEDLINE (last retrieval date: 12/26/2008)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult
Attention
Female
Humans
Male
Memory, Short-Term

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