The effect of rate of stimulation of the auditory nerve on phoneme recognition
AuthorGrayden, David B.; Clark, Graeme M.
Source TitleProceedings of the Eight Australian International Conference on Speech Science and Technology
PublisherAustralian Speech Science and Technology Association
Document TypeConference Item
CitationsGrayden, D. B., & Clark, G. M. (2000). The effect of rate of stimulation of the auditory nerve on phoneme recognition. In Proceedings of the Eight Australian International Conference on Speech Science and Technology, Canberra.
Access StatusOpen Access
Five patients implanted with the Nucleus CI-24M cochlear implant were tested on consonant and vowel perception with three different average rates of stimulation: 250 pulses/s per channel, 807 pps/ch and 1615 pps/ch. There were no significant differences in phoneme recognition scores when learning effects were taken into account. Information transmission analysesof consonant confusion matrices revealed that, with higher rates of stimulation, manner of articulation features were better perceived but place of articulation features were more poorlyperceived. The results and analyses suggest that high rates of stimulation provide improved information about temporal information and frication in speech, but mask the spectral detail required for the perception of place of articulation.
Keywordscochlear implant; speech perception (vowel perception)
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- Graeme Clark Collection