Perceptual learning of spectrally degraded speech and environmental sounds

Jeremy L. Loebach, David Pisoni

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

Adaptation to the acoustic world following cochlear implantation does not typically include formal training or extensive audiological rehabilitation. Can cochlear implant (CI) users benefit from formal training, and if so, what type of training is best? This study used a pre-/posttest design to evaluate the efficacy of training and generalization of perceptual learning in normal hearing subjects listening to CI simulations (eight-channel sinewave vocoder). Five groups of subjects were trained on words (simple/complex), sentences (meaningful/anomalous), or environmental sounds, and then were tested using an open-set identification task. Subjects were trained on only one set of materials but were tested on all stimuli. All groups showed significant improvement due to training, which successfully generalized to some, but not all stimulus materials. For easier tasks, all types of training generalized equally well. For more difficult tasks, training specificity was observed. Training on speech did not generalize to the recognition of environmental sounds; however, explicit training on environmental sounds successfully generalized to speech. These data demonstrate that the perceptual learning of degraded speech is highly context dependent and the type of training and the specific stimulus materials that a subject experiences during perceptual learning has a substantial impact on generalization to new materials.

Original languageEnglish
Pages (from-to)1126-1139
Number of pages14
JournalJournal of the Acoustical Society of America
Volume123
Issue number2
DOIs
StatePublished - 2008

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learning
education
acoustics
stimuli
Perceptual Learning
Sound
sentences
hearing
implantation

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Perceptual learning of spectrally degraded speech and environmental sounds. / Loebach, Jeremy L.; Pisoni, David.

In: Journal of the Acoustical Society of America, Vol. 123, No. 2, 2008, p. 1126-1139.

Research output: Contribution to journalArticle

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