Adaptation Reveals Multiple Levels of Representation in Auditory Stream Segregation
Joel S Snyder, Olivia L Carter, Erin E Hannon, Claude Alain
Journal of Experimental Psychology Human Perception & Performance | AMER PSYCHOLOGICAL ASSOC | Published : 2009
When presented with alternating low and high tones, listeners are more likely to perceive 2 separate streams of tones ("streaming") than a single coherent stream when the frequency separation (Deltaf) between tones is greater and the number of tone presentations is greater ("buildup"). However, the same large-Deltaf sequence reduces streaming for subsequent patterns presented after a gap of up to several seconds. Buildup occurs at a level of neural representation with sharp frequency tuning. The authors used adaptation to demonstrate that the contextual effect of prior Deltaf arose from a representation with broad frequency tuning, unlike buildup. Separate adaptation did not occur in a repre..View full abstract
Awarded by National Institutes of Health
Awarded by National Health and Medical Research Council (Australia)
Awarded by NATIONAL INSTITUTE OF MENTAL HEALTH
Joel S. Snyder was supported by the Clinical Research Training Program "Clinical Research in Biological and Social Psychiatry" from the National Institutes of Health (T32 MH16259). Olivia L. Carter was supported by National Health and Medical Research Council (Australia) C. J. Martin Fellowship 368525. Claude Alain was supported by grants from the Canadian Institutes of Health Research and the Hearing Foundation of Canada.