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Neural mechanisms of perceptual filling-in: fMRI and MEG studiesin humans

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Title Neural mechanisms of perceptual filling-in: fMRI and MEG studiesin humans
Period 02 / 2005 - 02 / 2009
Status Completed
Research number OND1307838
Data Supplier Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)

Abstract

During steady fixation, a peripherally presented figure on atextured background will fill in perceptually with the surroundingbackground. The underlying neural mechanisms will be studied for thefirst time in humans. FMRI will be used to localize a correlate ofthis illusion in visual cortex. MEG will be used to study theinteraction of neural signals related to figure and background duringfilling-in. These experiments are important for a deeperunderstanding of object recognition, because perceptual filling-in isa manifestation of mechanisms that underlie surface perception.Furthermore, current evidence indicates that plastic cortical changestriggered by receptor damage and subsequent recovery are akin tomechanisms involved in perceptual filling-in.

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Project leader Prof.dr. P. de Weerd

Classification

A80000 Man and society
D51000 Psychology

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