Journal Article

PreJuSER-19851

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Recalibration of the auditory continuity illusion: Sensory and decisional effects

Riecke, L. ; Micheyl, C. ; Vanbussel, M. ; Schreiner, C. S.FZJ* ; Mendelsohn, D. ; Formisano, E.

2011
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.heares.2011.01.013

Abstract: An interrupted sound can be perceived as continuous when noise masks the interruption, creating an illusion of continuity. Recent findings have shown that adaptor sounds preceding an ambiguous target sound can influence listeners' rating of target continuity. However, it remains unclear whether these aftereffects on perceived continuity influence sensory processes, decisional processes (i.e., criterion shifts), or both. The present study addressed this question. Results show that the target sound was more likely to be rated as 'continuous' when preceded by adaptors that were perceived as clearly discontinuous than when it was preceded by adaptors that were heard (illusorily or veridically) as continuous. Detection-theory analyses indicated that these contrastive aftereffects reflect a combination of sensory and decisional processes. The contrastive sensory aftereffect persisted even when adaptors and targets were presented to opposite ears, suggesting a neural origin in structures that receive binaural inputs. Finally, physically identical but perceptually ambiguous adaptors that were rated as 'continuous' induced more reports of target continuity than adaptors that were rated as 'discontinuous'. This assimilative aftereffect was purely decisional. These findings confirm that judgments of auditory continuity can be influenced by preceding events, and reveal that these aftereffects have both sensory and decisional components.

Keyword(s): Acoustic Stimulation (MeSH) ; Adaptation, Physiological (MeSH) ; Adaptation, Psychological (MeSH) ; Adult (MeSH) ; Audiometry (MeSH) ; Auditory Pathways: physiology (MeSH) ; Auditory Perception (MeSH) ; Auditory Threshold (MeSH) ; Cues (MeSH) ; Decision Theory (MeSH) ; Female (MeSH) ; Humans (MeSH) ; Illusions (MeSH) ; Male (MeSH) ; Middle Aged (MeSH) ; Noise: adverse effects (MeSH) ; Perceptual Masking (MeSH) ; Psychoacoustics (MeSH) ; Time Factors (MeSH) ; Young Adult (MeSH) ; J

Note: This work was supported by the Netherlands Organization for Scientific Research (NWO) Cognitie programma Grant 05104020. The authors thank Andrew Oxenham for useful discussions. Author CM is supported by an NIH grant (R01 DC007657).

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Contributing Institute(s):

1. Molekulare Organisation des Gehirns (INM-2)

Research Program(s):

1. Funktion und Dysfunktion des Nervensystems (FUEK409) (FUEK409)
2. 89571 - Connectivity and Activity (POF2-89571) (POF2-89571)

Appears in the scientific report 2011

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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