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Effect of Flanking Sounds on the Auditory Continuity Illusion

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  • Maori Kobayashi
  • Makio Kashino

Abstract

Background: The auditory continuity illusion or the perceptual restoration of a target sound briefly interrupted by an extraneous sound has been shown to depend on masking. However, little is known about factors other than masking. Methodology/Principal Findings: We examined whether a sequence of flanking transient sounds affects the apparent continuity of a target tone alternated with a bandpass noise at regular intervals. The flanking sounds significantly increased the limit of perceiving apparent continuity in terms of the maximum target level at a fixed noise level, irrespective of the frequency separation between the target and flanking sounds: the flanking sounds enhanced the continuity illusion. This effect was dependent on the temporal relationship between the flanking sounds and noise bursts. Conclusions/Significance: The spectrotemporal characteristics of the enhancement effect suggest that a mechanism to compensate for exogenous attentional distraction may contribute to the continuity illusion.

Suggested Citation

  • Maori Kobayashi & Makio Kashino, 2012. "Effect of Flanking Sounds on the Auditory Continuity Illusion," PLOS ONE, Public Library of Science, vol. 7(12), pages 1-5, December.
    • Handle: RePEc:plo:pone00:0051969
    DOI: 10.1371/journal.pone.0051969
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