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Related Experiment Video

Updated: Jan 19, 2026

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[Dichotic speech recognition with cochlear implants].

T Wesarg1, S Arndt2, A S Alballaa2,3

  • 1Klinik für Hals‑, Nasen- und Ohrenheilkunde und Poliklinik, Universitätsklinikum Freiburg, Medizinische Fakultät, Albert-Ludwigs-Universität Freiburg, Freiburg, Killianstr. 5, 79106, Freiburg, Deutschland. thomas.wesarg@uniklinik-freiburg.de.

HNO
|September 15, 2019
PubMed
Summary
This summary is machine-generated.

Normal-hearing individuals and cochlear implant recipients demonstrated dichotic speech recognition. Single-sided deafness cochlear implant recipients showed worse recognition with the implant compared to their normal hearing ear.

Keywords:
Dichotic listening testsDiscrimination test according to FeldmannOtological diagnostic techniquesSingle-sided deafnessSpeech audiometry

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Area of Science:

  • Audiology
  • Neuroscience
  • Speech-Language Pathology

Background:

  • Dichotic speech recognition, a measure of central auditory processing, has clinical applications dating back to the 1950s.
  • This study examines dichotic speech perception in various auditory conditions.

Purpose of the Study:

  • To investigate dichotic speech recognition in normal-hearing (NH) subjects.
  • To assess dichotic speech recognition in cochlear implant (CI) recipients with single-sided deafness (SSD).
  • To evaluate dichotic speech recognition in bilateral CI (BilCI) recipients using the Feldmann dichotic discrimination test.

Main Methods:

  • Speech recognition was tested using monotic and dichotic presentations of trisyllabic nouns from the Feldmann test.
  • Participants included 10 NH subjects, 10 SSD CI recipients, and 10 BilCI recipients.
  • Stimuli were presented at 65 dB SPL or equivalent, comparing better/poorer ears/CIs.

Main Results:

  • NH subjects performed worse on dichotic than monotic tasks.
  • SSD CI recipients exhibited significantly poorer speech recognition with their CI compared to their NH ear.
  • BilCI recipients showed lower speech recognition with their poorer CI and worse performance on dichotic versus monotic tasks for each CI.

Conclusions:

  • All participant groups successfully recognized dichotically presented speech.
  • The cochlear implant in SSD recipients did not negatively impact speech recognition with their normal-hearing ear during dichotic listening.