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2015 ; 2015
(ä): 352869
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Melodic Contour Training and Its Effect on Speech in Noise, Consonant
Discrimination, and Prosody Perception for Cochlear Implant Recipients
#MMPMID26494944
Lo CY
; McMahon CM
; Looi V
; Thompson WF
Behav Neurol
2015[]; 2015
(ä): 352869
PMID26494944
show ga
Cochlear implant (CI) recipients generally have good perception of speech in
quiet environments but difficulty perceiving speech in noisy conditions, reduced
sensitivity to speech prosody, and difficulty appreciating music. Auditory
training has been proposed as a method of improving speech perception for CI
recipients, and recent efforts have focussed on the potential benefits of
music-based training. This study evaluated two melodic contour training programs
and their relative efficacy as measured on a number of speech perception tasks.
These melodic contours were simple 5-note sequences formed into 9 contour
patterns, such as "rising" or "rising-falling." One training program controlled
difficulty by manipulating interval sizes, the other by note durations. Sixteen
adult CI recipients (aged 26-86 years) and twelve normal hearing (NH) adult
listeners (aged 21-42 years) were tested on a speech perception battery at
baseline and then after 6 weeks of melodic contour training. Results indicated
that there were some benefits for speech perception tasks for CI recipients after
melodic contour training. Specifically, consonant perception in quiet and
question/statement prosody was improved. In comparison, NH listeners performed at
ceiling for these tasks. There was no significant difference between the
posttraining results for either training program, suggesting that both conferred
benefits for training CI recipients to better perceive speech.