Title
Speech perception performance as a function of stimulus pulse rate and processing strategy preference for the Cochlear (TM) Nucleus (R) CI24RE device: Relation to perceptual threshold and loudness comfort profiles Speech perception performance as a function of stimulus pulse rate and processing strategy preference for the Cochlear (TM) Nucleus (R) CI24RE device: Relation to perceptual threshold and loudness comfort profiles
Author
Publication type
article
Publication
Stockholm ,
Subject
Human medicine
Source (journal)
The international journal of audiology / Royal National Institute for the Deaf; British Society of Audiology. - Stockholm
Volume/pages
49() :9 , p. 657-666
ISSN
1499-2027
ISI
000281975600006
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Current cochlear implants can operate at high pulse rates. The effect of increasing pulse rate on speech performance is not yet clear. Habituation to low rates may affect the outcome. This paper presents the results of three subsequent studies using different experimental paradigms, applying the Nucleus CI24RE device, and conducted by ten European implant teams. Pulse rate per channel varied from 500 to 3500 pulses per second with ACE and from 1200 to 3500 pps with CIS strategy. The results showed that the first rate presented had little effect on the finally preferred rate. Lower rates were preferred. The effect of pulse rate on word scores of post-linguistic implantees was small; high rates tended to give lower scores. However, there were no significant differences between the word scores across subjects if collected at the individually preferred pulse rate. High pulse rates were preferred when the post-implantation threshold was low.
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