The effect of a multichannel cochlear implant on phoneme perception

Scandinavian Audiology. Supplementum
T T VälimaaHeikki J Löppönen

Abstract

This study was done to investigate the effects of a multichannel cochlear implant on phoneme perception in Finnish-speaking postlingually deafened adults. Phoneme recognition was studied with 100 prerecorded nonsense syllables (open-set) presented at 70 dB SPL, auditorily only, in a free-field situation. Ten subjects were tested before implantation both with and without a hearing aid (HA), and 3, 6 and 12 months after switching on the implant. Before implantation without a HA, the subjects did not recognize vowels, consonants or syllables. Four of the subjects used a HA before implantation, and the mean recognition scores of these subjects were 34% for vowels, 28% for consonants and 13% for syllables. One year after switching on the implant, the mean recognition scores were 77% for vowels, 66% for consonants and 46% for syllables. According to phonological analysis vowels appear to be easier to perceive than consonants during the first stage after multichannel cochlear implantation.

References

Jan 1, 1996·Audiology : Official Organ of the International Society of Audiology·W SerniclaesC H Chouard
Apr 17, 1999·Audiology : Official Organ of the International Society of Audiology·J E van DijkG F Smoorenburg

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Citations

May 23, 2007·The Journal of Laryngology and Otology·K M J GreenR T Ramsden

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