Functional Asymmetry at Evaluation of Movement Trajectory of the Solid Sound Image in Human

At studying localization by human of moving solid sound image (SSI) under conditions of dichotic stimulation, an asymmetry has been revealed in evaluation of a shift of the initial and final points of the opposite SSI movement under mirror-symmetry conditions of stimulation. The shift to the right in all cases exceeds that to the left (by 3.4–32.1 degrees). The most pronounced asymmetry is observed at the initial moment of the SSI movement at the synergism of interaural differences in stimulation by its time and intensity; under these conditions, the trajectory of the SSI movement to the left turns out to be about 1.8 times longer than the movement to the right. Possible neurophysiological mechanisms of the obtained results are considered.