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We investigated the sensitivity of brain areas to the presence of filtering operations during overt visual search in crowded displays. Task conditions involved either visual search or predetermined simple eye movements for the detection of target digits. Furthermore, visual displays either contained letter foils that required filtering or contained only target digits. Brain imaging using positron emission tomography showed extensive overlap between areas involved in overt visual search and eye movements. Selective filtering of foils affected visual processing in ventral areas associated with object recognition and in primary visual cortex.

Original publication

DOI

10.1006/nimg.2002.1137

Type

Journal article

Journal

Neuroimage

Publication Date

08/2002

Volume

16

Pages

968 - 976

Keywords

Adult, Attention, Brain, Humans, Male, Photic Stimulation, Pursuit, Smooth, Saccades, Tomography, Emission-Computed