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Updated: Apr 22, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
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Melodic interval perception by normal-hearing listeners and cochlear implant users.

Xin Luo1, Megan E Masterson1, Ching-Chih Wu1

  • 1Department of Speech, Language, and Hearing Sciences, Purdue University, 500 Oval Drive, West Lafayette, Indiana 47907.

The Journal of the Acoustical Society of America
|October 18, 2014
PubMed
Summary
This summary is machine-generated.

Cochlear implant (CI) users showed slightly poorer melodic interval perception than normal-hearing (NH) listeners. CI users also demonstrated difficulties in judging melody intonation, potentially focusing more on ascending intervals.

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Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Music Perception

Background:

  • Melodic interval perception is crucial for understanding music.
  • Cochlear implants (CIs) bypass damaged parts of the ear but may affect pitch processing.
  • Understanding how CI users perceive melodic intervals is important for auditory rehabilitation.

Purpose of the Study:

  • To compare melodic interval perception between normal-hearing (NH) listeners and cochlear implant (CI) users.
  • To investigate the influence of interval size and direction (ascending/descending) on interval perception in both groups.
  • To assess CI users' ability to judge and adjust melodic intonation.

Main Methods:

  • Melodic interval ranking thresholds were measured using an adaptive procedure.
  • Listeners rated the intonation of familiar melodies with scaled intervals and adjusted the scaling factor.
  • Correlations were examined between ranking thresholds and melody intonation judgments for CI users.

Main Results:

  • CI users had slightly higher interval ranking thresholds than NH listeners.
  • Both groups showed increased thresholds with larger interval sizes and for descending intervals.
  • CI users rated melodies as less in tune and showed less sensitivity to scaling than NH listeners.

Conclusions:

  • Cochlear implant users exhibit deficits in melodic interval perception compared to normal-hearing listeners.
  • The direction of melodic intervals (ascending vs. descending) affects perception in both groups.
  • CI users' intonation judgments may be influenced by a preference for processing ascending intervals.