Map dynamic ranges versus duration of hearing loss in cochlear implantees.
In order to assess the relationship of factors such as age, cause of deafness, use of hearing aids, duration of hearing loss, and age at onset of hearing loss, with the size of map dynamic ranges (DRs), 34 postlingually and 8 prelingually deaf users of the Nucleus cochlear implant system were analyzed according to the sizes of map DRs. Lack of auditory stimulation for a longer period than 10 years might be one of the most important factors associated with a reduced map DR. Use of hearing aids was associated with larger map DRs. Small map DRs were found across a range of age, age at onset, and duration of hearing loss. Cause of deafness did not appear to be related to map DRs.
Shim
Y
Y
Department of Otorhinolaryngology-Head and Neck Surgery, Yonsei University, College of Medicine, Seoul, Korea.
Kim
H
H
Chang
M
M
Kim
C
C
D000293:Adolescent; D000328:Adult; D001309:Auditory Threshold; D003054:Cochlear Implants; D003638:Deafness / Q000503:physiopathology* / Q000534:rehabilitation; D004558:Electric Stimulation; D006310:Hearing Aids; D006801:Humans; D013997:Time Factors