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Titolo:
Hemisperic dominance of cortical activity evoked by focal electrogustatorystimuli
Autore:
Barry, MA; Gatenby, JC; Zeiger, JD; Gore, JC;
Indirizzi:
Univ Connecticut, Ctr Hlth, Sch Dent Med, Dept Biostruct & Funct, Farmington, CT 06030 USA Univ Connecticut Farmington CT USA 06030 Funct, Farmington, CT 06030 USA Yale Univ, Sch Med, Dept Diagnost Radiol, New Haven, CT 06510 USA Yale Univ New Haven CT USA 06510 Diagnost Radiol, New Haven, CT 06510 USA
Titolo Testata:
CHEMICAL SENSES
fascicolo: 5, volume: 26, anno: 2001,
pagine: 471 - 482
SICI:
0379-864X(200106)26:5<471:HDOCAE>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; EVENT-RELATED FMRI; GUSTATORY STIMULATION; TASTE PERCEPTION; FUNCTIONAL MRI; TEMPORAL-LOBE; TIME-SERIES; HUMANS; CORTEX; AREAS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
42
Recensione:
Indirizzi per estratti:
Indirizzo: Barry, MA Univ Connecticut, Ctr Hlth, Sch Dent Med, Dept Biostruct & Funct, Farmington, CT 06030 USA Univ Connecticut Farmington CT USA 06030 rmington, CT 06030 USA
Citazione:
M.A. Barry et al., "Hemisperic dominance of cortical activity evoked by focal electrogustatorystimuli", CHEM SENSE, 26(5), 2001, pp. 471-482

Abstract

Functional magnetic resonance imaging was used to observe cortical hemodynamic responses to electric taste stimuli applied separately to the right and left sides of the tongue tip. In 11 right-handed normal adults activationoccurred primarily in the insular cortex, superior temporal robe, inferiorfrontal lobe, including premotor regions, and in inferior parts of the postcentral gyrus. Unexpectedly, the location and laterality of activation were largely identical regardless of the side of the tongue stimulated. Activation in the superior insula, the presumed location of primary gustatory cortex, was predominantly, but not exclusively, in the right hemisphere, whereas central (more inferior) insular activations were more evenly bilateral. Right hemispheric dominance of activation also occurred in premotor regions(Brodmann areas 6 and 44), whereas left hemispheric dominance occurred only in the superior temporal cortex (Brodmann areas 22/42). The electric taste-evoked hemodynamic response pattern was more consistent with activation of the gustatory system than activation of somatosensory systems. The results suggest that the sites for cortical processing of electric taste information are dependent on hemispheric specialization.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 02:57:27