Quick Search:

uzh logo
Browse by:
bullet
bullet
bullet
bullet

Zurich Open Repository and Archive 

Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-3244

Ishai, A; Schmidt, C F; Boesiger, P (2005). Face perception is mediated by a distributed cortical network. Brain Research Bulletin, 67(1-2):87-93.

[img] PDF - Registered users only
1MB

Abstract

The neural system associated with face perception in the human brain was investigated using functional magnetic resonance imaging (fMRI). In contrast to many studies that focused on discreet face-responsive regions, the objective of the current study was to demonstrate that regardless of stimulus format, emotional valence, or task demands, face perception evokes activation in a distributed cortical network. Subjects viewed various stimuli (line drawings of unfamiliar faces and photographs of unfamiliar, famous, and emotional faces) and their phase scrambled versions. A network of face-responsive regions was identified that included the inferior occipital gyrus, fusiform gyrus, superior temporal sulcus, hippocampus, amygdala, inferior frontal gyrus, and orbitofrontal cortex. Although bilateral activation was found in all regions, the response in the right hemisphere was stronger. This hemispheric asymmetry was manifested by larger and more significant clusters of activation and larger number of subjects who showed the effect. A region of interest analysis revealed that while all face stimuli evoked activation within all regions, viewing famous and emotional faces resulted in larger spatial extents of activation and higher amplitudes of the fMRI signal. These results indicate that a mere percept of a face is sufficient to localize activation within the distributed cortical network that mediates the visual analysis of facial identity and expression.

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Neuroradiology
DDC:610 Medicine & health
Language:English
Date:2005
Deposited On:19 Mar 2009 08:51
Last Modified:27 Nov 2013 23:53
Publisher:Elsevier
ISSN:0361-9230
Publisher DOI:10.1016/j.brainresbull.2005.05.027
PubMed ID:16140166
Citations:Web of Science®. Times Cited: 182
Google Scholar™
Scopus®. Citation Count: 188

Users (please log in): suggest update or correction for this item

Repository Staff Only: item control page