Imitative consonant feature production by children with multichannel sensory aids.
OBJECTIVE
To examine changes over time in consonant feature production by children with profound hearing impairments who used either the Nucleus multichannel cochlear implant or the multichannel vibrotactile aid, Tactaid 7.


METHODS
Imitative consonant productions of children with prelingual deafness were elicited and transcribed at two intervals: 1) before receiving their respective devices (predevice interval), and 2) after an average of 1.5 yr of device use (postdevice interval). The consonant productions were analyzed in terms of the percentage of consonant features (manner, place, and voicing) produced by the child that matched the features of the examiner's target. The percentage of features produced correctly was then averaged across repetitions, vowel environments, and participants within each group.


RESULTS
At the predevice interval, the cochlear implant and Tactaid 7 participants demonstrated similar imitative consonant production abilities. After an average of 1.5 yr of device use, the cochlear implant participants demonstrated significantly greater gains than did the Tactaid 7 participants for the features of voicing and place of articulation. Although the cochlear implant participants showed a trend towards better production of the consonant manner features, this difference failed to reach significance.


CONCLUSIONS
The current results suggest that the use of a multichannel sensory aid yields improvements in consonant feature production. Furthermore, use of a cochlear implant appears to promote the production of consonant voicing and place features to a greater degree than does the use of a multichannel tactile aid.
Sehgal
S T
ST
Department of Otolaryngology-Head and Neck Surgery, Indiana University School of Medicine, Indianapolis, USA.
Kirk
K I
KI
Svirsky
M
M
Ertmer
D J
DJ
Osberger
M J
MJ
D000704:Analysis of Variance; D001301:Audiometry, Pure-Tone; D001309:Auditory Threshold; D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation; D003143:Communication Devices for People with Disabilities; D003145:Communication Methods, Total; D003638:Deafness / Q000150:complications / Q000601:surgery*; D006801:Humans; D007100:Imitative Behavior; D010700:Phonetics; D012720:Severity of Illness Index; D013064:Speech Disorders / Q000175:diagnosis* / Q000209:etiology / Q000534:rehabilitation; D013067:Speech Perception; D013068:Speech Production Measurement