The Role of Place Cues in Voluntary Stream Segregation for Cochlear Implant Users

Andreu Paredes Gallardo*, Sara Miay Kim Madsen, Torsten Dau, Jeremy Marozeau

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Sequential stream segregation by cochlear implant (CI) listeners was investigated using a temporal delay detection task composed of a sequence of regularly presented bursts of pulses on a single electrode (B) interleaved with an irregular sequence (A) presented on a different electrode. In half of the trials, a delay was added to the last burst of the regular B sequence, and the listeners were asked to detect this delay. As a jitter was added to the period between consecutive A bursts, time judgments between the A and B sequences provided an unreliable cue to perform the task. Thus, the segregation of the A and B sequences should improve performance. In Experiment 1, the electrode separation and the sequence duration were varied to clarify whether place cues help CI listeners to voluntarily segregate sounds and whether a two-stream percept needs time to build up. Results suggested that place cues can facilitate the segregation of sequential sounds if enough time is provided to build up a two-stream percept. In Experiment 2, the duration of the sequence was fixed, and only the electrode separation was varied to estimate the fission boundary. Most listeners were able to segregate the sounds for separations of three or more electrodes, and some listeners could segregate sounds coming from adjacent electrodes.
Original languageEnglish
JournalTrends in Hearing
Volume22
Number of pages13
ISSN2331-2165
DOIs
Publication statusPublished - 2018

Keywords

  • Auditory perception
  • Auditory streaming
  • Cochlear implant

Cite this

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title = "The Role of Place Cues in Voluntary Stream Segregation for Cochlear Implant Users",
abstract = "Sequential stream segregation by cochlear implant (CI) listeners was investigated using a temporal delay detection task composed of a sequence of regularly presented bursts of pulses on a single electrode (B) interleaved with an irregular sequence (A) presented on a different electrode. In half of the trials, a delay was added to the last burst of the regular B sequence, and the listeners were asked to detect this delay. As a jitter was added to the period between consecutive A bursts, time judgments between the A and B sequences provided an unreliable cue to perform the task. Thus, the segregation of the A and B sequences should improve performance. In Experiment 1, the electrode separation and the sequence duration were varied to clarify whether place cues help CI listeners to voluntarily segregate sounds and whether a two-stream percept needs time to build up. Results suggested that place cues can facilitate the segregation of sequential sounds if enough time is provided to build up a two-stream percept. In Experiment 2, the duration of the sequence was fixed, and only the electrode separation was varied to estimate the fission boundary. Most listeners were able to segregate the sounds for separations of three or more electrodes, and some listeners could segregate sounds coming from adjacent electrodes.",
keywords = "Auditory perception, Auditory streaming, Cochlear implant",
author = "{Paredes Gallardo}, Andreu and Madsen, {Sara Miay Kim} and Torsten Dau and Jeremy Marozeau",
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language = "English",
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journal = "Trends in Hearing",
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The Role of Place Cues in Voluntary Stream Segregation for Cochlear Implant Users. / Paredes Gallardo, Andreu; Madsen, Sara Miay Kim; Dau, Torsten; Marozeau, Jeremy.

In: Trends in Hearing, Vol. 22, 2018.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - The Role of Place Cues in Voluntary Stream Segregation for Cochlear Implant Users

AU - Paredes Gallardo, Andreu

AU - Madsen, Sara Miay Kim

AU - Dau, Torsten

AU - Marozeau, Jeremy

PY - 2018

Y1 - 2018

N2 - Sequential stream segregation by cochlear implant (CI) listeners was investigated using a temporal delay detection task composed of a sequence of regularly presented bursts of pulses on a single electrode (B) interleaved with an irregular sequence (A) presented on a different electrode. In half of the trials, a delay was added to the last burst of the regular B sequence, and the listeners were asked to detect this delay. As a jitter was added to the period between consecutive A bursts, time judgments between the A and B sequences provided an unreliable cue to perform the task. Thus, the segregation of the A and B sequences should improve performance. In Experiment 1, the electrode separation and the sequence duration were varied to clarify whether place cues help CI listeners to voluntarily segregate sounds and whether a two-stream percept needs time to build up. Results suggested that place cues can facilitate the segregation of sequential sounds if enough time is provided to build up a two-stream percept. In Experiment 2, the duration of the sequence was fixed, and only the electrode separation was varied to estimate the fission boundary. Most listeners were able to segregate the sounds for separations of three or more electrodes, and some listeners could segregate sounds coming from adjacent electrodes.

AB - Sequential stream segregation by cochlear implant (CI) listeners was investigated using a temporal delay detection task composed of a sequence of regularly presented bursts of pulses on a single electrode (B) interleaved with an irregular sequence (A) presented on a different electrode. In half of the trials, a delay was added to the last burst of the regular B sequence, and the listeners were asked to detect this delay. As a jitter was added to the period between consecutive A bursts, time judgments between the A and B sequences provided an unreliable cue to perform the task. Thus, the segregation of the A and B sequences should improve performance. In Experiment 1, the electrode separation and the sequence duration were varied to clarify whether place cues help CI listeners to voluntarily segregate sounds and whether a two-stream percept needs time to build up. Results suggested that place cues can facilitate the segregation of sequential sounds if enough time is provided to build up a two-stream percept. In Experiment 2, the duration of the sequence was fixed, and only the electrode separation was varied to estimate the fission boundary. Most listeners were able to segregate the sounds for separations of three or more electrodes, and some listeners could segregate sounds coming from adjacent electrodes.

KW - Auditory perception

KW - Auditory streaming

KW - Cochlear implant

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M3 - Journal article

VL - 22

JO - Trends in Hearing

JF - Trends in Hearing

SN - 2331-2165

ER -