Categorical loudness scaling in cochlear implant recipients
Peter A Busby, Agnes Au
INTERNATIONAL JOURNAL OF AUDIOLOGY | TAYLOR & FRANCIS LTD | Published : 2017
OBJECTIVE: This study investigated categorical loudness scaling in a large group of cochlear implant (CI) recipients. DESIGN: Categorical loudness was measured for individually determined sets of current amplitudes on apical, mid and basal electrodes of the Nucleus array. STUDY SAMPLE: Thirty adult subjects implanted with the Nucleus CI. RESULTS: Subjects were generally reliable in categorical loudness scaling. As expected, current levels eliciting the same loudness categories differed across subjects and electrodes in many cases. After scaling the electric levels to remove differences in dynamic ranges across subjects and electrodes, the across-subject loudness functions for the three elect..View full abstract
This research was supported by Cochlear Limited and the HEARing CRC, established and supported under the Cooperative Research Centres Program - an Australian Government Initiative. We wish to thank Kieran Reed for software development, the 30 CI subjects for their participation, Dr. Wiebke Heeren for the results from her study, and the reviewers for their helpful comments.