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January 2022

Differences in children's sound production when speaking with a cochlear implant turned on and turned off

Author(s): Spencer, L., Bedia, E. G., Woodworth, G.

Journal/Book: J Speech Hear Res. 1996; 39: 10801 Rockville Pike Rd, Rockville, MD 20852-3279. Amer Speech-Lang-Hearing Assn. 604-610.

Abstract: Twenty children who have worn a Cochlear Corporation cochlear implant for an average of 33.6 months participated in a device-on/off experiment, They spoke 14 monosyllabic words three times each after having not worn their cochlear implant speech processors for several hours. They then spoke the same speech sample again with their cochlear implants turned on. The utterances were phonetically transcribed by speech-language pathologists. On average, no difference between speaking conditions on indices of vowel height, vowel place, initial consonant place, initial consonant voicing, or final consonant voicing was found. Comparisons based on a narrow transcription of the speech samples revealed no difference between the two speaking conditions. Children who were more intelligible were no more likely to show a degradation in their speech production in the device-off condition than children who were less intelligible. In the device-on condition, children sometimes nasalized their vowels and inappropriately aspirated their consonants. Their tendency to nasalize vowels and aspirate initial consonants might reflect an attempt to increase proprioceptive feedback, which would provide them with a greater awareness of their speaking behavior.

Note: Article N Tyemurray, Cent Inst Deaf, 818 S Euclid, St Louis, MO 63110 USA

Keyword(s): cochlear implant; auditory feedback; deafness; children; VOWEL FORMANT FREQUENCIES; AUDITORY-FEEDBACK; SPEECH PRODUCTION; USERS; PERFORMANCE; ADULTS

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