Stability of Perceptual Organisation in Auditory Streaming

  • Susan L. Denham
  • Kinga Gyimesi
  • Gábor Stefanics
  • István Winkler
Conference paper

Abstract

In everyday situations, we perceive sounds organised according to their source, and can follow someone’s speech or a musical piece in the presence of other sounds without apparent effort. Thus, it is surprising that recent evidence obtained in the most widely used experimental test-bed of auditory scene analysis, the two-tone streaming paradigm, demonstrated extensive bistability even in regions of the parameter space previously thought to be strongly biased towards a particular organisation. This raises the question of what aspects of the rich natural input allow the auditory system to form stable representations of concurrently active sound sources. Here, we report the results of perceptual studies aimed at testing this issue. It is possible that the extreme repetitiveness of the alternating two-tone sequence, i.e. lack of change, causes perceptual instability. Our first experiment addressed this hypothesis by introducing random changes in the stimulation. It is also possible that under natural conditions, multiple redundant cues stabilise perception. The second experiment tested this hypothesis by adding a second cue which favoured one organisation. Much to our surprise, neither one of these manipulations stabilised the perception of two-tone streaming sequences. We discuss these experimental results in the light of our previous theoretical proposals and findings of significant differences between the first and later perceptual phases. We argue that multi-stability is inherent in perception. However, it is normally hidden by switches of attention, which allow the return of the dominant perceptual organisation resulting in the subjective experience of perceptual stability. In our third experiment, we explored this possibility by inserting short gaps into the sequences, since gaps have been shown to reset auditory streaming in a manner similar to switches in attention.

Keywords

Auditory streaming Bistability Perceptual switching Auditory scene analysis 

Notes

Acknowledgements

This work was supported by the European Research Area Specific Targeted Projects EmCAP (IST-FP6-013123), and SCANDLE (IST-FP7-231168).

References

  1. Cowan N (1984) On short and long auditory stores. Psychol Bull 96:351–370CrossRefGoogle Scholar
  2. Cusack R, Deeks J, Aikman G, Carlyon RP (2004) Effects of location, frequency region, and time course of selective attention on auditory scene analysis. J Exp Psychol Hum Percept Perform 30:643–656CrossRefPubMedGoogle Scholar
  3. Denham SL, Winkler I (2006) The role of predictive models in the formation of auditory streams. J Physiol Paris 100:154–170CrossRefPubMedGoogle Scholar
  4. Denham SL, Gyimesi K, Stefanics G, Winkler I (2008) Perceptual bi-stability in auditory streaming: how much do stimulus features matter? Biological Psychology, under reviewGoogle Scholar
  5. Farkas A, Dudás T, Horváth J, Sussman E, Winkler I (2006) Jelzmozzanatok integrációja hangláncok elválasztásában [Cue integration in separating auditory streams]. A Magyar Pszichológiai Társaság XVII., Országos Tudományos Nagygylése, BudapestGoogle Scholar
  6. Leopold DA, Wilke M, Maier A, Logothetis NK (2002) Stable perception of visually ambiguous patterns. Nat Neurosci 5:605–609CrossRefPubMedGoogle Scholar
  7. Pressnitzer D, Hupé JM (2005) Is auditory streaming a bistable percept? Forum Acusticum, Budapest, pp 1557–1561Google Scholar
  8. Pressnitzer D, Hupé JM (2006) Temporal dynamics of auditory and visual bistability reveal common principles of perceptual organization. Curr Biol 16:1351–1357CrossRefPubMedGoogle Scholar
  9. Vliegen J, Moore BC, Oxenham AJ (1999) The role of spectral and periodicity cues in auditory stream segregation, measured using a temporal discrimination task. J Acoust Soc Am 106:938–945CrossRefPubMedGoogle Scholar
  10. Winkler I, Takegata R, Sussman E (2005) Event-related brain potentials reveal multiple stages in the perceptual organization of sound. Brain Res Cogn Brain Res 25:291–299CrossRefPubMedGoogle Scholar
  11. Zwislocki JJ (1969) Temporal summation of loudness: an analysis. J Acoust Soc Am 46:431–440CrossRefPubMedGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Susan L. Denham
    • 1
  • Kinga Gyimesi
  • Gábor Stefanics
  • István Winkler
  1. 1.Centre for Theoretical and Computational Neuroscience, University of PlymouthPlymouthUK

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