NDLI: Using convex optimization to compute channel capacity in a channel model of cochlear implant stimulation

Content Provider	IEEE Xplore Digital Library
Author	Xiao Gao Grayden, D.B. McDonnell, M.D.
Copyright Year	2014
Description	Author affiliation: Comput. & Theor. Neurosci. Lab., Univ. of South Australia, Mawson Lakes, SA, Australia (Xiao Gao; McDonnell, M.D.) \|\| Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Melbourne, VIC, Australia (Grayden, D.B.)
Abstract	The goal of cochlear implants is to restore hearing by replacing the function of missing inner hair cells using an array of electrodes to directly stimulate auditory nerves. Previous studies have already established an information theoretic modeling framework for the electrode-neural interface, which enables prediction of the optimal number of electrodes by calculating mutual information between channel input (choice of electrodes) and channel output (defined as a function of the active nerve fibers in response to an electrode choice). In order to estimate whether the positions or usage probabilities of electrodes could impact on the performance of cochlear implants from an information theoretic perspective, a convex optimization method is adapted to compute channel capacity and capacity-achieving input distribution of the cochlear implant model in this paper. We relate the capacity-achieving input distribution to the optimal locations and usage probabilities of electrodes. The result shows that the optimized distribution of electrodes increases the maximum mutual information and predicts the best performance of cochlear implants.
Starting Page	2919
Ending Page	2923
File Size	432803
Page Count	5
File Format	PDF
ISBN	9781479951864
ISSN	21578117
DOI	10.1109/ISIT.2014.6875368
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrodes Channel capacity Mutual information Convex functions Cochlear implants Random variables Numerical models
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in