[The mechanism of speech perception using multichannel cochlear implant].
The mechanism of speech perception in patients with Australian multi-channel cochlear implant was investigated. 1) Vowel recognition abilities of patients were sufficient with this implant, whereas, consonant recognition abilities were insufficient. 2) Although the cochlear hair cells were functionally damaged, cochlear nerves had the ability to characterize frequency. 3) The signals from the implanted material were very simple compared to those from normal cochlea, however these patients could understand speech well, perhaps due to aid from the central nervous system.
Ito
J
J
Department of Otolaryngology, Faculty of Medicine, Kyoto University.
Honjo
I
I
Takeuchi
M
M
Sakakibara
J
J
D000328:Adult; D003054:Cochlear Implants; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D013067:Speech Perception / Q000502:physiology*