Deficits in auditory-spatial integration of sequentially presented patterns due to cortical lesions.
Groups of patients with cortical lesions were subjected to a uniquely developed procedure to test auditory-spatial perception. The stimuli were comprised of a sound source, which sequentially outlined a pattern within a 10 X 10 matrix of loudspeakers. Simple sound patterns, which "moved" across the loudspeaker array only once or twice, were equally well identified by the control group and the various patient groups. However, the more complex patterns, which outlined the contour of alphabetical letters, resulted in significantly lowered identification rates for the patient groups with lesions in the right posterior, left posterior and left temporal lobes. As a control measure, visual-spatial tasks were administered, and lower performance rates were found for the left and right posterior groups. The differences and similarities between auditory spatial and visual-spatial processing are discussed.
D001307:Auditory Perception / Q000502:physiology*; D001925:Brain Damage, Chronic / Q000523:psychology*; D002540:Cerebral Cortex / Q000503:physiopathology*; D005625:Frontal Lobe / Q000503:physiopathology; D007839:Functional Laterality; D006801:Humans; D010364:Pattern Recognition, Visual / Q000502:physiology; D013017:Sound Localization / Q000502:physiology*; D013702:Temporal Lobe / Q000503:physiopathology