Distinct and convergent visual processing of high and low spatial frequency information in faces.

Distinct and convergent visual processing of high and low spatial frequency information in faces. Research Abstract Details 

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Distinct and convergent visual processing of high and low spatial frequency information in faces. Abstract Text:

Pia Rotshtein,Patrik Vuilleumier,Joel Winston,Jon Driver,Ray Dolan,Pia Rotshtein,Patrik Vuilleumier,Joel Winston,Jon Driver,Ray Dolan,Pia Rotshtein,Patrik Vuilleumier,Joel Winston,Jon Driver,Ray Dolan,

We tested for differential brain response to distinct spatial frequency (SF) components in faces. During a functional magnetic resonance imaging experiment, participants were presented with "hybrid" faces containing superimposed low and high SF information from different identities. We used a repetition paradigm where faces at either SF range were independently repeated or changed across consecutive trials. In addition, we manipulated which SF band was attended. Our results suggest that repetition and attention affected partly overlapping occipitotemporal regions but did not interact. Changes of high SF faces increased responses of the right inferior occipital gyrus (IOG) and left inferior temporal gyrus (ITG), with the latter response being also modulated additively by attention. In contrast, the bilateral middle occipital gyrus (MOG) responded to repetition and attention manipulations of low SF. A common effect of high and low SF repetition was observed in the right fusiform gyrus (FFG). Follow-up connectivity analyses suggested direct influence of the MOG (low SF), IOG, and ITG (high SF) on the FFG responses. Our results reveal that different regions within occipitotemporal cortex extract distinct visual cues at different SF ranges in faces and that the outputs from these separate processes project forward to the right FFG, where the different visual cues may converge.

Distinct and convergent visual processing of high and low spatial frequency information in faces. Publishing Authors By Initials

P Rotshtein,P Vuilleumier,J Winston,J Driver,R Dolan,P Rotshtein,P Vuilleumier,J Winston,J Driver,R Dolan,P Rotshtein,P Vuilleumier,J Winston,J Driver,R Dolan,

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Distinct and convergent visual processing of high and low spatial frequency information in faces. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Cerebral cortex (New York, N.Y. : 1991)

VOLUME: 17

Page Numbers: 2713-24

Journal Abbreviation: Cereb. Cortex

ISSN: 1047-3211

DAY: 5

MONTH: 02

YEAR: 2007

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LANGUAGE: eng

NlmUniqueID: 9110718

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AFFILIATION: Behavioural Brain Science Centre, School of Psychology, University of Birmingham, Edgbaston, Birmingham, UK. p.rotshtein@bham.ac.uk

Country: United States

AGENCY: United Kingdom Wellcome T

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MEDLINETA: Cereb Cortex

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