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Titolo:
The time course of the BOLD response in the human auditory cortex to acoustic stimuli of different duration
Autore:
Jancke, L; Buchanan, T; Lutz, K; Specht, K; Mirzazade, S; Shah, NJS;
Indirizzi:
Otto Von Guericke Univ Magdeburg, Inst Gen Psychol, D-39112 Magdeburg, Germany Otto Von Guericke Univ Magdeburg Magdeburg Germany D-39112 burg, Germany Res Ctr Julich, Inst Med, Julich, Germany Res Ctr Julich Julich GermanyRes Ctr Julich, Inst Med, Julich, Germany Univ Oklahoma, Hlth Sci Ctr, Dept Psychiat & Behav Sci, Oklahoma City, OK 73190 USA Univ Oklahoma Oklahoma City OK USA 73190 Sci, Oklahoma City, OK 73190 USA
Titolo Testata:
COGNITIVE BRAIN RESEARCH
fascicolo: 2, volume: 8, anno: 1999,
pagine: 117 - 124
SICI:
0926-6410(19990716)8:2<117:TTCOTB>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
LEFT-RIGHT ASYMMETRIES; HUMAN-BRAIN; FUNCTIONAL MRI; SERIES; FMRI; CAT;
Keywords:
fMRI; auditory cortex; stimulus duration;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Jancke, L Otto Von Guericke Univ Magdeburg, Inst Gen Psychol, Lennestr 6, D-39112 Magdeburg, Germany Otto Von Guericke Univ Magdeburg Lennestr 6 Magdeburg Germany D-39112
Citazione:
L. Jancke et al., "The time course of the BOLD response in the human auditory cortex to acoustic stimuli of different duration", COGN BRAIN, 8(2), 1999, pp. 117-124

Abstract

The relationship between activity within the human auditory cortices and the duration of heard tones was investigated by measuring the hemodynamic response with functional magnetic resonance imaging. We demonstrate that there is no significant influence of stimulus duration as used here on the intensity and spatial extent of the hemodynamic response in the auditory cortices. We found however, that the time course of the hemodynamic response to the repeated stimulus presentation exhibited a characteristic decline after the first stimulus exposure during the activation period. The possible reasons for this time course are currently unknown, however, several factors may be involved, including top-down mechanisms and/or the interplay of tissueperfusion and oxygen consumption. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 08/04/20 alle ore 12:08:28