ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06

2pPP50. Aurally aided visual search under static and moving conditions.

Debra L. Ferguson

David R. Perrott

Dept. of Psychol., California State Univ., 5151 University Dr., Los Angeles, CA 90032

Auditory localization of static and dynamic targets in the presence or absence of an (broadband noise) auditory cue was examined in a two-alternative, forced-choice paradigm. The location of the target varied relative to the subject's initial fixation point. The right and left hemispheres were tested at 45, 90, and 135 deg azimuth on the zero degree elevation plane. Also tested were zero and 180 deg locations. The range of target velocities was 0, 10, 20, or 40 deg per second, with direction of travel and velocity randomized in each trial. Each main effect was significant as well as two-way interactions between conditionxlocation and conditionxvelocity. These results suggest the utilization of spatially correlated auditory cues under static and moving conditions, particularly in the posterior field and at higher velocities. [Work supported by NSF.]