Subjective Estimation of the Trajectory Length of Fused Auditory Image Movement


    loading  Checking for direct PDF access through Ovid

Abstract

The perceived trajectory length of the movement of a fused auditory image (FAI) against the background of interaural intensity differences was estimated in eight subjects upon dichotic stimulation through headphones. FAI movement was created by gradually changing the interaural delay (ΔT) between clicks in binaurally presented series of clicks from 0 to ±630 μs. When the FAI moved from the left to the right, an increase in interaural intensity difference (ΔI) from 0 to +13 dB (in the right channel of stimulation) significantly shortened the FAI trajectory because of a greater lateralization of the start point of FAI movement as compared to its end point. In the case of an oppositely directed movement (from the right to the left), the movement trajectory significantly decreased when ΔI increased from 0 to −13 dB (i.e., in the left stimulation channel), which was also explained by the greater lateralization of the start point of FAI movement as compared to its end point.

    loading  Loading Related Articles