Abstract:
:Auditory scene analysis requires the listener to parse the incoming flow of acoustic information into perceptual "streams," such as sentences from a single talker in the midst of background noise. Behavioral and neural data show that the formation of streams is not instantaneous; rather, streaming builds up over time and can be reset by sudden changes in the acoustics of the scene. Here, we investigated the effect of changes induced by voluntary head motion on streaming. We used a telepresence robot in a virtual reality setup to disentangle all potential consequences of head motion: changes in acoustic cues at the ears, changes in apparent source location, and changes in motor or attentional processes. The results showed that self-motion influenced streaming in at least two ways. Right after the onset of movement, self-motion always induced some resetting of perceptual organization to one stream, even when the acoustic scene itself had not changed. Then, after the motion, the prevalent organization was rapidly biased by the binaural cues discovered through motion. Auditory scene analysis thus appears to be a dynamic process that is affected by the active sensing of the environment.
journal_name
Proc Natl Acad Sci U S Aauthors
Kondo HM,Pressnitzer D,Toshima I,Kashino Mdoi
10.1073/pnas.1112852109subject
Has Abstractpub_date
2012-04-24 00:00:00pages
6775-80issue
17eissn
0027-8424issn
1091-6490pii
1112852109journal_volume
109pub_type
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