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PROSTHETIC VISUAL PERCEPTION: RETINAL ELECTRICAL STIMULATION
IN BLIND HUMAN PATIENTS
by
Alan Matthew Horsager
A Dissertation Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(NEUROSCIENCE)
MAY 2009
Copyright 2009 Alan Matthew Horsager
Object Description
| Title | Prosthetic visual perception: retinal electrical stimulation in blind human patients |
| Author | Horsager, Alan Matthew |
| Author email | horsager@usc.edu; horsager@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Neuroscience |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2009-03-11 |
| Date submitted | 2009 |
| Restricted until | Unrestricted |
| Date published | 2009-04-29 |
| Advisor (committee chair) |
Sampath, Alapakkam Fine, Ione |
| Advisor (committee member) |
Weiland, James Loeb, Gerlad |
| Abstract | Can functional vision be restored in blind human subjects using a microelectronic retinal prosthesis? The initial indications suggest that, yes, it is possible. However, the visual experience of these subjects is nothing like a digital scoreboard-like movie, with each electrode acting as an independent pixel. The work described here suggests that there are interactions between pulses and across electrodes, at the electrical, retinal, or even cortical level that influence the quality of the percept. In particular, this work addresses the question, "how does the percept change as a function of pulse timing on single and multiple electrodes"? The motivation for the work described here is that these interactions must be understood and predictable if we are to develop a functional tool for blind human patients. |
| Keyword | retinal prosthesis; blindness; vision; medical device; visual psychophysics; computational model |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m2151 |
| Rights | Horsager, Alan Matthew |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Horsager-2605 |
| Archival file | uscthesesreloadpub_Volume32/etd-Horsager-2605.pdf |
Description
| Title | Page 1 |
| Full text | PROSTHETIC VISUAL PERCEPTION: RETINAL ELECTRICAL STIMULATION IN BLIND HUMAN PATIENTS by Alan Matthew Horsager A Dissertation Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (NEUROSCIENCE) MAY 2009 Copyright 2009 Alan Matthew Horsager |
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