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The Influence of the Envelope Waveform on Binaural Tuning of Neurons in the Inferior Colliculus and Its Relation to Binaural Perception

  • Mathias DietzEmail author
  • Torsten Marquardt
  • David Greenberg
  • David McAlpine
Conference paper
Part of the Advances in Experimental Medicine and Biology book series (volume 787)

Abstract

Recently, Klein-Hennig et al. (J Acoust Soc Am 129:3856–3872, 2011) suggested a design for envelope waveforms that allows for independent setting of the duration of the four segments of an envelope cycle – pause, attack, sustain, and decay. These authors conducted psychoacoustic experiments to determine the threshold interaural time differences (ITDs) for different waveforms and revealed that a steep attack flank and at least 4 ms of pause duration prior to the attack are optimal for discrimination performance, whilst sustained and decay durations were of only minor influence. The current study tests the sharpness of rate-ITD-functions recorded in the inferior colliculus of guinea pigs in response to a similar set of waveforms, examining their relationship to the psychoacoustic data. Particular focus is applied to temporally asymmetric envelope waveforms: a long 15-ms attack and a short 1.5-ms decay envelope and the temporally inverted envelope with a short 1.5-ms attack and a long 15-ms decay.

Keywords

Inferior Colliculus Cycle Duration Pause Duration Inferior Colliculus Neuron Attack Duration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported by the MRC. Mathias Dietz was supported by the Alexander von Humboldt-Foundation with a Feodor Lynen Fellowship.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Mathias Dietz
    • 1
    Email author
  • Torsten Marquardt
    • 1
  • David Greenberg
    • 1
  • David McAlpine
    • 1
  1. 1.Ear InstituteUniversity College LondonLondonUK

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