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Cited by 1,517

The DOI matches its Crossref record.

FUNCTIONAL NEUROANATOMY OF FACE AND OBJECT PROCESSING: A POSITRON EMISSION TOMOGRAPHY STUDY

SERGENT, JUSTINE, OHTA, SHINSUKE, MACDONALD, BRENNAN·1992·Brain
DOI 10.1093/brain/115.1.15
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Abstract

Studies of brain-damaged patients have revealed the existence of a selective impairment of face processing, prosopagnosia, resulting from lesions at different loci in the occipital and temporal lobes. The results of such studies have led to the identification of several cortical areas underlying the processing of faces, but it remains unclear what functional aspects of face processing are served by these areas and whether they are uniquely devoted to the processing of faces. The present study addresses these questions in a positron emission tomography (PET) study of regional cerebral blood flow in normal adults, using the 15 oxygen water bolus technique. The subjects participated in six tasks (with gratings, faces and objects), and the resulting level of cerebral activation was mapped on images of the subjects' cerebral structures obtained through magnetic resonance and was compared between tasks using the subtraction method. Compared with a fixation condition, regional cerebral blood flow (rCBF) changes were found in the striate and extrastriate cortex when subjects had to decide on the orientation of sine-wave gratings. A face-gender categorization resulted in activation changes in the right extrastriate cortex, and a face-identity condition produced additional activation of the fusiform gyrus and anterior temporal cortex of both hemispheres, and of the right parahippocampal gyrus and adjacent areas. Cerebral activation during an object-recognition task occurred essentially in the left occipito-temporal cortex and did not involve the right hemisphere regions specifically activated during the face-identity task. The results provide the first empirical evidence from normal subjects regarding the crucial role of the ventro-medial region of the right hemisphere in face recognition, and they offer new information about the dissociation between face and object processing.

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Metadata

Authors
SERGENT, J., OHTA, S., & MACDONALD, B.
Venue
Brain
Publisher
Oxford University Press (OUP)
Published
1992
Volume
115
Issue
1
Pages
15-36
ISSN
  • 0006-8950 (ISSN-L)
  • 1460-2156
DOI
10.1093/brain/115.1.15
OpenAlex
W1831445803
Cited by
1,517
References
0
FWCI
13.53
Type
journal article
Language
en
Open access
closed

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