Publication year
2001Source
Scandinavian Audiology, 30, 1, (2001), pp. 31-4-40ISSN
Publication type
Article / Letter to editor
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Organization
Medical Psychology
Otorhinolaryngology
Journal title
Scandinavian Audiology
Volume
vol. 30
Issue
iss. 1
Page start
p. 31-4
Page end
p. 40
Subject
Hearing and Communication Disorders; Gehoor en communicatieAbstract
Processing in the auditory cortex may play a role in the unexplained variability in cochlear implant benefit. P300 and N1/P2 were elicited in post-lingually deaf cochlear implant users wearing a Nucleus multichannel cochlear implant. Four sound contrasts were presented (500-1,000 Hz, /ba/-/da/, /ba/-/pa/ and /i/-/a/). N1 and P2 were present in all subjects for all conditions. Prolonged N1, P2 and P300 latencies were found in the cochlear implant group compared to a control group of subjects with normal hearing. Cochlear implant users show smaller amplitudes of N1 for all the speech signals as well as smaller amplitudes of P2 for the consonants compared to the controls. P300 results of the cochlear implant users were compared to behavioural results of speech recognition testing. A relation was found between P300 amplitude and magnitude for the 500-1,000 Hz and /i/-/a/ contrasts and behavioural speech recognition in cochlear implant users. The results suggest that P300 measurements are useful and have additional value to speech recognition evaluations in cochlear implant users.
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- Academic publications [238441]
- Faculty of Medical Sciences [90373]
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