fMRI study of taste cortical areas in humans. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Annals of the New York Academy of Sciences Année : 1998

fMRI study of taste cortical areas in humans.

Résumé

We used 3 Tesla functional magnetic resonance imaging (fMRI) with echo planar imaging to map taste projections in the human. Activations were found surrounding and buried in the sylvian fissure; the upper part of insula, the frontal operculum, and the foot of the pre- and postcentral gyri were usually activated. Moreover, we could describe, for the first time, a lateralized associative projection located in the lower part of the dominant hemisphere of the subject (n = 10). We also observed activations in the anterior cingulate gyrus, the centromedial thalamus, and other areas related to emotional or cognitive processes. Thirty subjects were submitted to a familiarization experiment sampling neophobic and nonneophobic stimuli. Measurements of isointense concentrations, magnitude estimates and hedonic values were assessed repetitively for 10 weeks. Five subjects performed 3 fMRI experiments, before, during and after familiarization. Psychophysical data showed a relationship between the evolution of the hedonic assessment and the intensity of the perception, and fMRI results showed a relationship between the evolution of the hedonic assessment and the evolution of the percent of activated pixels in taste cortical area.

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Imagerie
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Dates et versions

hal-00349937 , version 1 (05-01-2009)

Identifiants

  • HAL Id : hal-00349937 , version 1
  • PUBMED : 9929649

Citer

A. Faurion, B. Cerf, D. Le Bihan, A. M. Pillias. fMRI study of taste cortical areas in humans.. Annals of the New York Academy of Sciences, 1998, 855, pp.535-45. ⟨hal-00349937⟩
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