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Research ArticleNew Research, Sensory and Motor Systems

Temporal Integration of Auditory Information Is Invariant to Temporal Grouping Cues

Andrew S.K. Liu, Joji Tsunada, Joshua I. Gold and Yale E. Cohen
eNeuro 20 April 2015, 2 (2) ENEURO.0077-14.2015; DOI: https://doi.org/10.1523/ENEURO.0077-14.2015
Andrew S.K. Liu
1Bioengineering Graduate Group
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Joji Tsunada
2Department of Otorhinolaryngology, Perelman School of Medicine
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Joshua I. Gold
3Department of Neuroscience, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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Yale E. Cohen
2Department of Otorhinolaryngology, Perelman School of Medicine
3Department of Neuroscience, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104
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Abstract

Auditory perception depends on the temporal structure of incoming acoustic stimuli. Here, we examined whether a temporal manipulation that affects the perceptual grouping also affects the time dependence of decisions regarding those stimuli. We designed a novel discrimination task that required human listeners to decide whether a sequence of tone bursts was increasing or decreasing in frequency. We manipulated temporal perceptual-grouping cues by changing the time interval between the tone bursts, which led to listeners hearing the sequences as a single sound for short intervals or discrete sounds for longer intervals. Despite these strong perceptual differences, this manipulation did not affect the efficiency of how auditory information was integrated over time to form a decision. Instead, the grouping manipulation affected subjects’ speed−accuracy trade-offs. These results indicate that the temporal dynamics of evidence accumulation for auditory perceptual decisions can be invariant to manipulations that affect the perceptual grouping of the evidence.

  • auditory cortex
  • decision-making
  • scene analysis
  • speed-accuracy tradeoff
  • streaming

Footnotes

  • ↵1 The authors report no financial conflicts of interest.

  • ↵3 J.I.G. was supported by grants from the NEI-NIH. Y.E.C. was supported by grants from the NIDCD-NIH and the Boucai Hearing Restoration Fund.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International, which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.

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March/April 2015
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Temporal Integration of Auditory Information Is Invariant to Temporal Grouping Cues
Andrew S.K. Liu, Joji Tsunada, Joshua I. Gold, Yale E. Cohen
eNeuro 20 April 2015, 2 (2) ENEURO.0077-14.2015; DOI: 10.1523/ENEURO.0077-14.2015

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Temporal Integration of Auditory Information Is Invariant to Temporal Grouping Cues
Andrew S.K. Liu, Joji Tsunada, Joshua I. Gold, Yale E. Cohen
eNeuro 20 April 2015, 2 (2) ENEURO.0077-14.2015; DOI: 10.1523/ENEURO.0077-14.2015
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Keywords

  • auditory cortex
  • decision-making
  • scene analysis
  • Speed-Accuracy Tradeoff
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