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Titolo:
Neuroanatomical discrimination between manipulating and maintaining processes involved in verbal working memory; a functional MRI study
Autore:
Tsukiura, T; Fujii, T; Takahashi, T; Xiao, RT; Inase, M; Iijima, T; Yamadori, A; Okuda, J;
Indirizzi:
Tohoku Univ, Grad Sch Med, Dept Disabil Med, Div Neuropsychol,Aoba Ku, Sendai, Miyagi 9808575, Japan Tohoku Univ Sendai Miyagi Japan 9808575 Ku, Sendai, Miyagi 9808575, Japan Electrotech Lab, Supermol Sci Div, Mol & Cellular Neurosci Sect, Tsukuba, Ibaraki 305, Japan Electrotech Lab Tsukuba Ibaraki Japan 305 ct, Tsukuba, Ibaraki 305, Japan Japan Soc Promot Sci, Tokyo, Japan Japan Soc Promot Sci Tokyo JapanJapan Soc Promot Sci, Tokyo, Japan
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 1, volume: 11, anno: 2001,
pagine: 13 - 21
SICI:
0926-6410(200103)11:1<13:NDBMAM>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; REGIONAL BRAIN ACTIVITY; PREFRONTAL CORTEX; NEURAL SYSTEMS; FRONTAL-CORTEX; PET; ACTIVATION; MAINTENANCE; INFORMATION; ATTENTION;
Keywords:
working memory; manipulation; maintenance; process-specific; process-nonspecific; functional MRI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Tsukiura, T Tohoku Univ, Grad Sch Med, Dept Disabil Med, Div Neuropsychol,Aoba Ku, 2-1Seiryo Machi, Sendai, Miyagi 9808575, Japan Tohoku Univ 2-1 Seiryo Machi Sendai Miyagi Japan 9808575 Japan
Citazione:
T. Tsukiura et al., "Neuroanatomical discrimination between manipulating and maintaining processes involved in verbal working memory; a functional MRI study", COGN BRAIN, 11(1), 2001, pp. 13-21

Abstract

We used functional magnetic resonance imaging (fMRI) to investigate neuralcorrelates of processes concerning store and manipulation in verbal working memory. We prepared a revised lag I digit span, digit span and a simple number detection task. Specific activities in association with manipulating process were identified in the right middle (BA 9/46) and left precentral gyrus (BA 6). Activated areas specific to maintaining process were detected in the right middle (right BA 11/10) and medial (BA 6) frontal gyri, the right inferior parietal lobule (BA 30), and the left middle (BA 9) and inferior frontal gyri (BA 44). The process-nonspecific activated areas common to two processes were identified in the right inferior frontal gyrus (BA 47) and the left superior parietal lobule (BA 7). Using: the signal percent change of each subject, we calculated the correlation coefficients among each activated area. The results of this analysis showed that two processes of verbal working memory were clearly discriminated. The two essential processesbf manipulation and maintenance in workings memory seem to activate process-specific and overlapping (process-nonspecific) areas, but the patterns ofcombination were definitely different. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 13/07/20 alle ore 18:05:10