Sensitivity to Auditory Velocity Contrast.
A natural auditory scene often contains sound moving at varying velocities. Using a velocity contrast paradigm, we compared sensitivity to velocity changes between continuous and discontinuous trajectories. Subjects compared the velocities of two stimulus intervals that moved along a single trajectory, with and without a 1 second inter stimulus interval (ISI). We found thresholds were threefold larger for velocity increases in the instantaneous velocity change condition, as compared to instantaneous velocity decreases or thresholds for the delayed velocity transition condition. This result cannot be explained by the current static "snapshot" model of auditory motion perception and suggest a continuous process where the percept of velocity is influenced by previous history of stimulation.
School of Medical Sciences, University of Sydney, NSW 2006 Australia.|Department of Psychology, New York University, 6 Washington Place, New York, NY 10003, USA.
Shannon M
SM
Locke
School of Medical Sciences, University of Sydney, NSW 2006 Australia.
Johahn
J
Leung
School of Medical Sciences, University of Sydney, NSW 2006 Australia.|Starkey Hearing Research Center, 2110 Shattuck st#408, Berkeley, CA 94704 USA.
Simon
S
Carlile
D000161:Acoustic Stimulation; D000328:Adult; D001309:Auditory Threshold / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception; D013016:Sound; D013017:Sound Localization / Q000502:physiology*; D055815:Young Adult