Temporal weighting in sound localization.
The dynamics of sound localization were studied using a free-field direct localization task (pointing to sound sources) and an observer-weighting analysis that assessed the relative influence of each click in a click-train stimulus. In agreement with previous studies of the precedence effect and binaural adaptation, weighting functions showed increased influence of the onset click when the interclick interval (ICI) was short (<5 ms). For longer ICIs, all clicks in a train contributed roughly the same amount to listeners' localization responses. Finally, when a short gap was introduced in the middle of a train, the influence of the click immediately following the gap increased, in agreement with the "restarting" results obtained by Hafter and Buell [J. Acoust. Soc. Am. 88, 806-812 (1990)].
Stecker
G Christopher
GC
Department of Psychology, University of California, Berkeley 94720, USA. cstecker@umich.edu
Hafter
Ervin R
ER
D000161:Acoustic Stimulation; D001288:Attention; D007839:Functional Laterality; D006801:Humans; D008144:Loudness Perception; D010898:Pitch Perception; D011571:Psychoacoustics; D013017:Sound Localization; D013018:Sound Spectrography; D013998:Time Perception