The influence of spatial separation of sound sources on the auditory evoked response.

Abstract The N1P2 component of the auditory evoked response in man was measured under conditions in which sounds alternated between loudspeakers located in the horizontal plane (Experiment 1) and in the vertical plane (Experiment 2). When compared with response amplitudes to sounds originating always at the same location, significant increments were found when sounds alternated between loudspeakers separated by 90 deg. in either the horizontal or vertical plane. The data were interpreted in terms of a place theory of cortical organization for auditory space perception.

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