Abstract：
:Auditory prostheses use implanted electrode arrays that permit stimulation at many sites along the tonotopic axis of auditory neurons. Psychophysical studies demonstrate that measures of implant function, such as detection and discrimination thresholds, vary considerably across these sites, that the across-site patterns of these measures differ across subjects, and that the likely mechanisms underlying this variability differ across measures. Psychophysical and speech recognition studies suggest that not all stimulation sites contribute equally to perception with the prosthesis and that some sites might have negative effects on perception. Studies that reduce the number of active stimulation sites indicate that most cochlear implant users can effectively utilize a maximum of only about seven sites in their processors. These findings support a strategy for improving implant performance by selecting only the best stimulation sites for the processor map. Another approach is to revise stimulation parameters for ineffective sites in an effort to improve acuity at those sites. In this paper, we discuss data supporting these approaches and some potential pitfalls.
journal_name
Hear Resjournal_title
Hearing researchauthors
Pfingst BE,Burkholder-Juhasz RA,Zwolan TA,Xu Ldoi
10.1016/j.heares.2007.11.007subject
Has Abstractpub_date
2008-08-01 00:00:00pages
172-83issue
1-2eissn
0378-5955issn
1878-5891pii
S0378-5955(07)00266-3journal_volume
242pub_type
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