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Titolo:
Functional neuroanatomy of different olfactory judgments
Autore:
Royet, JP; Hudry, J; Zald, DH; Godinot, D; Gregoire, MC; Lavenne, F; Costes, N; Holley, A;
Indirizzi:
Univ Lyon 1, CNRS UMR 5020, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 20, F-69622 Villeurbanne, France Vanderbilt Univ, Dept Psychol, Nashville, TN 37240 USA Vanderbilt Univ Nashville TN USA 37240 t Psychol, Nashville, TN 37240 USA CERMEP, Neurol Hosp, F-69003 Lyon, France CERMEP Lyon France F-69003CERMEP, Neurol Hosp, F-69003 Lyon, France
Titolo Testata:
NEUROIMAGE
fascicolo: 3, volume: 13, anno: 2001,
pagine: 506 - 519
SICI:
1053-8119(200103)13:3<506:FNODOJ>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; ANTERIOR CINGULATE CORTEX; ORBITOFRONTAL CORTEX; INDUCED ACTIVATION; BRAIN ACTIVATION; PET ACTIVATION; RHESUS-MONKEY; MEMORY; ODORS; STIMULATION;
Keywords:
detection; intensity; hedonic; familiarity; edibility; orbitofrontal;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
54
Recensione:
Indirizzi per estratti:
Indirizzo: Royet, JP Univ Lyon 1, CNRS UMR 5020, F-69622 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69622 2 Villeurbanne, France
Citazione:
J.P. Royet et al., "Functional neuroanatomy of different olfactory judgments", NEUROIMAGE, 13(3), 2001, pp. 506-519

Abstract

Humans routinely make judgments about olfactory stimuli. However, few studies have examined the functional neuroanatomy underlying the cognitive operations involved in such judgments. In order to delineate this functional anatomy, we asked 12 normal subjects to perform different judgments about olfactory stimuli while regional cerebral blood flow (rCBF) was measured with PET. In separate conditions, subjects made judgments about the presence (odor detection), intensity, hedonicity, familiarity, or edibility of different odorants. An auditory task served as a control condition. All five olfactory tasks induced rCBF increases in the right orbitofrontal cortex (OFC), but right OFC activity was highest during familiarity judgments and lowest during the detection task. Left OFC activity increased significantly during hedonic and familiarity judgments, but not during other odor judgments. Left OFC activity was significantly higher during hedonicity judgments than during familiarity or other olfactory judgments. These data demonstrate that aspects of odor processing in the OFC are lateralized depending on the typeof olfactory task. They support a model of parallel processing in the leftand right OFC in which the relative level of activation depends on whetherthe judgment involves odor recognition or emotion. Primary visual areas also demonstrated a differential involvement in olfactory processing depending on the type of olfactory task: significant rCBF increases were observed in hedonic and edibility judgments, whereas no significant rCBF increases were found in the other three judgments. These data indicate that judgments of hedonicity and edibility engage circuits involved in visual processing, but detection, intensity, and familiarity judgments do not. (C) 2001 Academic Press.

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Documento generato il 25/01/20 alle ore 19:00:01