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A multimodal cortical network for the detection of changes in the sensory environment.

Nature neuroscience | Mar 11, 2000

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.

Pubmed ID: 10700261 RIS Download

Mesh terms: Adolescent | Adult | Attention | Auditory Perception | Brain Mapping | Cerebral Cortex | Dominance, Cerebral | Event-Related Potentials, P300 | Evoked Potentials, Somatosensory | Female | Humans | Magnetic Resonance Imaging | Male | Perceptual Disorders | Physical Stimulation | Touch | Visual Perception