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Titolo:
Cortical asymmetries of the human somatosensory hand representation in right- and left-handers
Autore:
Soros, P; Knecht, S; Imai, T; Gurtler, S; Lutkenhoner, B; Ringelstein, EB; Henningsen, H;
Indirizzi:
Univ Munster, Dept Neurol, D-48129 Munster, Germany Univ Munster MunsterGermany D-48129 pt Neurol, D-48129 Munster, Germany Univ Munster, Inst Expt Audiol, D-48149 Munster, Germany Univ Munster Munster Germany D-48149 pt Audiol, D-48149 Munster, Germany
Titolo Testata:
NEUROSCIENCE LETTERS
fascicolo: 2, volume: 271, anno: 1999,
pagine: 89 - 92
SICI:
0304-3940(19990820)271:2<89:CAOTHS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN MOTOR CORTEX; HANDEDNESS; MAGNETOENCEPHALOGRAPHY; ORGANIZATION; AMPUTATION; SYSTEM; MEG;
Keywords:
magnetoencephalography; magnetic source imaging; evoked potentials; somatosensory system; brain asymmetry; right-handed; left-handed;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Soros, P Univ Munster, Dept Neurol, Albert Schweitzer Str 33, D-48129 Munster, Germany Univ Munster Albert Schweitzer Str 33 Munster Germany D-48129ny
Citazione:
P. Soros et al., "Cortical asymmetries of the human somatosensory hand representation in right- and left-handers", NEUROSCI L, 271(2), 1999, pp. 89-92

Abstract

Hemispheric asymmetry is known for higher brain functions like language and attention. We tested whether such an asymmetry also exists in the representation of elementary sensory functions. Magnetic source imaging was used to compare the cortical somatosensory hand representation in seven right- and five left-handed individuals. In all right-handers the representation of the dominant hand was larger than the contralateral one in the corresponding hemispheres. In contrast, only two out of five left-handers revealed a larger representation of the dominant left hand compared to the right one. Inagreement with previous findings on the lateralization of language and attention, there is a strong correlation between handedness and the extent of the cortical hand representation in right-, but not in left-handers. We conclude that a profound functional hemispheric asymmetry also exists in primary sensory cortices. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/01/21 alle ore 22:46:05