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Information processing in the gustatory cortices in primates Hisashi Ogawa 1 , Hirotoshi Ifuku 2 1Department of Sensory and Cognitive Physiology, Faculty of Medical and Pharmaceutical Sciences, Kumamoto University 2Department of Health and Physical Education, Faculty of Education, Kumamoto University Keyword: サル , 大脳皮質味覚野 , 味の弁別 pp.275-283
Published Date 2004/4/10
DOI https://doi.org/10.11477/mf.1431100201
  • Abstract
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 The primary gustatory area has been located at 2 cortical regions, one at area G at the transition between the frontal operculum and insula in the lateral sulcus and one at the oral representation area of precentral area 3 in subhuman primates. The higher-order gustatory area, on the other hand, have been estimated at the PrCO(precentral operculum)and orbitofrontal cortex including the OFO(orbitofrontal operculum). So far physiological studies have shown that taste neurons in the primary and higher-order gustatory cortices showed similar properties, except for sensory specific satiety in the latter. Reversal of cue-task relation at a taste discrimination GO-NOGO task, however, revealed that almost all neurons in the primary gustatory area represent the physico-chemical nature, but some in the higher order areas represent the behavioral context of gustatory cues. Thus, it is suggested that the primary and higher-order gustatory areas deal with different aspects of taste information.

(Received:November 17, 2003)


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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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