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- Title
A multimodal cortical network for the detection of changes in the sensory environment.
- Authors
Downar, J; Crawley, A P; Mikulis, D J; Davis, K D
- Abstract
Sensory stimuli undergoing sudden changes draw attention and preferentially enter our awareness. We used event-related functional magnetic-resonance imaging (fMRI) to identify brain regions responsive to changes in visual, auditory and tactile stimuli. Unimodally responsive areas included visual, auditory and somatosensory association cortex. Multimodally responsive areas comprised a right-lateralized network including the temporoparietal junction, inferior frontal gyrus, insula and left cingulate and supplementary motor areas. These results reveal a distributed, multimodal network for involuntary attention to events in the sensory environment. This network contains areas thought to underlie the P300 event-related potential and closely corresponds to the set of cortical regions damaged in patients with hemineglect syndromes.
- Publication
Nature neuroscience, 2000, Vol 3, Issue 3, p277
- ISSN
1097-6256
- Publication type
Journal Article
- DOI
10.1038/72991