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Titolo:
Functional differentiation in the human auditory and language areas revealed by a dichotic listening task
Autore:
Hashimoto, R; Homae, F; Nakajima, K; Miyashita, Y; Sakai, KL;
Indirizzi:
Univ Tokyo, Grad Sch Arts & Sci, Dept Cognit & Behav Sci, Meguro Ku, Tokyo1538902, Japan Univ Tokyo Tokyo Japan 1538902 Behav Sci, Meguro Ku, Tokyo1538902, Japan Univ Tokyo, Sch Med, Dept Physiol, Bunkyo Ku, Tokyo 1130033, Japan Univ Tokyo Tokyo Japan 1130033 Physiol, Bunkyo Ku, Tokyo 1130033, Japan Japan Sci & Technol Corp, ICORP, Tokyo, Japan Japan Sci & Technol Corp Tokyo Japan Technol Corp, ICORP, Tokyo, Japan Japan Sci & Technol Corp, CREST, Tokyo, Japan Japan Sci & Technol Corp Tokyo Japan Technol Corp, CREST, Tokyo, Japan
Titolo Testata:
NEUROIMAGE
fascicolo: 2, volume: 12, anno: 2000,
pagine: 147 - 158
SICI:
1053-8119(200008)12:2<147:FDITHA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANUM TEMPORALE; SELECTIVE ATTENTION; DIRECTED ATTENTION; CEREBRAL ASYMMETRY; ACOUSTIC NOISE; CORTEX; MODULATION; CORTICES; FMRI; ACETYLCHOLINESTERASE;
Keywords:
speech recognition; functional magnetic resonance imaging (fMRI); the auditory cortex;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
56
Recensione:
Indirizzi per estratti:
Indirizzo: Sakai, KL Univ Tokyo, Grad Sch Arts & Sci, Dept Cognit & Behav Sci, MeguroKu, 3-8-1Komaba, Tokyo 1538902, Japan Univ Tokyo 3-8-1 Komaba Tokyo Japan1538902 okyo 1538902, Japan
Citazione:
R. Hashimoto et al., "Functional differentiation in the human auditory and language areas revealed by a dichotic listening task", NEUROIMAGE, 12(2), 2000, pp. 147-158

Abstract

The human auditory cortex plays a special role in speech recognition. It is therefore necessary to clarify the functional roles of individual auditory areas. We applied functional magnetic resonance imaging (fMRI) to examinecortical responses to speech sounds, which were presented under the dichotic and diotic (binaural) listening conditions. We found two different response patterns in multiple auditory areas and language-related areas. In the auditory cortex, the medial portion of the secondary auditory area (A2), aswell as a part of the planum temporale (PT) and the superior temporal gyrus and sulcus (ST), showed greater responses under the dichotic condition than under the diotic condition. This dichotic selectivity may reflect acoustic differences and attention-related factors such as spatial attention and selective attention to targets. In contrast, other parts of the auditory cortex showed comparable responses to the dichotic and diotic conditions. We found similar functional differentiation in the inferior frontal (IF) cortex. These results suggest that multiple auditory and language areas may playa pivotal role in integrating the functional differentiation for speech recognition. (C) 2000 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 14:02:36