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Titolo:
The motion aftereffect: more than area V5/MT? Evidence from O-15-butanol PET studies
Autore:
Hautzel, H; Taylor, JG; Krause, BJ; Schmitz, N; Tellmann, L; Ziemons, K; Shah, NJ; Herzog, H; Muller-Gartner, HW;
Indirizzi:
KFA Julich GmbH, Res Ctr, Dept Nucl Med, D-52426 Julich, Germany KFA Julich GmbH Julich Germany D-52426 Nucl Med, D-52426 Julich, Germany Univ Dusseldorf, Dept Nucl Med, D-4000 Dusseldorf, Germany Univ Dusseldorf Dusseldorf Germany D-4000 ed, D-4000 Dusseldorf, Germany KFA Julich GmbH, Res Ctr, Inst Med, D-5170 Julich, Germany KFA Julich GmbH Julich Germany D-5170 , Inst Med, D-5170 Julich, Germany Univ London Kings Coll, Dept Math, London WC2R 2LS, England Univ London Kings Coll London England WC2R 2LS London WC2R 2LS, England
Titolo Testata:
BRAIN RESEARCH
fascicolo: 2, volume: 892, anno: 2001,
pagine: 281 - 292
SICI:
0006-8993(20010223)892:2<281:TMAMTA>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; ANTERIOR CINGULATE CORTEX; WORKING-MEMORY; SUSTAINED ATTENTION; VISUAL PATHWAYS; FLICKERING TEST; BLOOD-FLOW; BRAIN; PERCEPTION; ACTIVATION;
Keywords:
motion aftereffect; PET; V5/MT; prefrontal cortex; parietal cortex; attention;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
57
Recensione:
Indirizzi per estratti:
Indirizzo: Hautzel, H KFA Julich GmbH, Res Ctr, Dept Nucl Med, D-52426 Julich, Germany KFA Julich GmbH Julich Germany D-52426 -52426 Julich, Germany
Citazione:
H. Hautzel et al., "The motion aftereffect: more than area V5/MT? Evidence from O-15-butanol PET studies", BRAIN RES, 892(2), 2001, pp. 281-292

Abstract

The motion aftereffect is a perceptual phenomenon which has been extensively investigated both psychologically and physiologically. Neuroimaging techniques have recently demonstrated that area V5/MT is activated during the perception of this illusion. The aim of this study was to test the hypothesis if a more broadly distributed network of brain regions subserves the motion aftereffect. To identify the neuronal structures involved in the perception of the motion aftereffect, regional cerebral blood flow (rCBF) measurements with positron emission tomography were performed in six normal volunteers. Data were analysed using SPM96. The motion-sensitive visual ureas including area V5/MT were activated in both hemispheres. Additionally, the lateral parietal cortex bilaterally, the right dorsolateral prefrontal cortex, the anterior cingulate cortex and the left cerebellum showed significant increases in rCBF values during the experience of the waterfall illusion. In a further reference condition with identical attentional demand but no perception of a motion aftereffect elevated rCBF were found in these regions aswell. In conclusion, our findings support the notion that the perceptual illusion of motion arises exclusively in the motion-sensitive visual area V5/MT. In addition, a more widespread network of brain regions including the prefrontal and parietal cortex is activated during the waterfall illusion which represents a non-motion aftereffect-specific subset of brain areas butis involved in more basic attentional processing and cognition. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 24/01/20 alle ore 13:26:19