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Discrimination of speech sound contrasts determined with behavioral tests and event-related potentials in cochlear implant recipients.

Cortical potentials evoked with speech stimuli were investigated in ten experienced cochlear implant (CI, type Nucleus 24M) users using three different speech-coding strategies and two different speech contrasts, one vowel (/i/-/a/) and one consonant (/ba/-/da/) contrast. On average, results showed...

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Publicado en:Journal of the American Academy of Audiology Vol. 16; no. 1; pp. 42 - 54
Autores principales: Beynon AJ, Snik AFM, Stegeman DF, van den Broek P
Formato: research tables/charts tracings Journal Article
Publicado: Thieme Medical Publishing Inc. Jan2005
Acceso en línea:Ver este registro en EBSCOhost
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      dt: Jan2005
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      pub: Thieme Medical Publishing Inc.
      place: New York, New York
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        atl: Discrimination of speech sound contrasts determined with behavioral tests and event-related potentials in cochlear implant recipients.
      aug:
        au:
          Beynon AJ
          Snik AFM
          Stegeman DF
          van den Broek P
        affil: Cochlear Implant Centre Nijmegen/St. Michielsgestel, University Medical Centre Nijmegen -- E.N.T. Department, P. Van Leijdenlaan 15, 6525 EX Nijmegen, the Netherlands; a.beynon@kno.umcn.nl
      sug:
        subj:
          Cochlear Implant
          Evoked Potentials, Auditory, Brainstem
          Speech Perception
          Acoustic Stimulation
          Adult
          Aged
          Correlation Coefficient
          Descriptive Statistics
          Female
          Male
          Middle Age
          Test-Retest Reliability
          Two-Tailed Test
          Unpaired T-Tests
          Validation Studies
          Human
          Adult: 19-44 years
          Aged: 65+ years
          Middle Aged: 45-64 years
          Female
          Male
      ab: Cortical potentials evoked with speech stimuli were investigated in ten experienced cochlear implant (CI, type Nucleus 24M) users using three different speech-coding strategies and two different speech contrasts, one vowel (/i/-/a/) and one consonant (/ba/-/da/) contrast. On average, results showed that, compared to subjects with normal hearing, P300 amplitudes were smaller; however, most latencies were within the normal range. Next, individual P300 measures in response to the two speech contrasts were compared to behavioral discrimination scores. Significant within-subject differences in P300 amplitudes and latencies were found for the three speech coding strategies. These differences were in agreement with the behavioral, strategy-dependent discrimination of the speech contrasts.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
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      ougenre: Article
    language: English
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