Reading visual braille with a retinal prosthesis.
Reading visual braille with a retinal prosthesis.
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DOI：
10.3389/fnins.2012.00168
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发表时间：
2012
影响因子：
4.3
通讯作者：
Greenberg RJ
中科院分区：
文献类型：
--
作者：
Lauritzen TZ;Harris J;Mohand-Said S;Sahel JA;Dorn JD;McClure K;Greenberg RJ
Retinal prostheses, which restore partial vision to patients blinded by outer retinal degeneration, are currently in clinical trial. The Argus II retinal prosthesis system was recently awarded CE approval for commercial use in Europe. While retinal prosthesis users have achieved remarkable visual improvement to the point of reading letters and short sentences, the reading process is still fairly cumbersome. This study investigates the possibility of using an epiretinal prosthesis to stimulate visual braille as a sensory substitution for reading written letters and words. The Argus II retinal prosthesis system, used in this study, includes a 10 × 6 electrode array implanted epiretinally, a tiny video camera mounted on a pair of glasses, and a wearable computer that processes the video and determines the stimulation current of each electrode in real time. In the braille reading system, individual letters are created by a subset of dots from a 3 by 2 array of six dots. For the visual braille experiment, a grid of six electrodes was chosen out of the 10 × 6 Argus II array. Groups of these electrodes were then directly stimulated (bypassing the camera) to create visual percepts of individual braille letters. Experiments were performed in a single subject. Single letters were stimulated in an alternative forced choice (AFC) paradigm, and short 2–4-letter words were stimulated (one letter at a time) in an open-choice reading paradigm. The subject correctly identified 89% of single letters, 80% of 2-letter, 60% of 3-letter, and 70% of 4-letter words. This work suggests that text can successfully be stimulated and read as visual braille in retinal prosthesis patients.
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影响因子：
1.8
作者：
Humayun, MS;Weiland, JD;de Juan, E
通讯作者：
de Juan, E
DOI：
10.1098/rspb.2010.1747
发表时间：
2011-05-22
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Zrenner E;Bartz-Schmidt KU;Benav H;Besch D;Bruckmann A;Gabel VP;Gekeler F;Greppmaier U;Harscher A;Kibbel S;Koch J;Kusnyerik A;Peters T;Stingl K;Sachs H;Stett A;Szurman P;Wilhelm B;Wilke R
通讯作者：
Wilke R
DOI：
10.3758/bf03195598
发表时间：
2004-08-01
期刊：
BEHAVIOR RESEARCH METHODS INSTRUMENTS & COMPUTERS
影响因子：
--
作者：
New, B;Pallier, C;Ferrand, L
通讯作者：
Ferrand, L
影响因子：
64.8
作者：
DOBELLE, WH;MLADEJOVSKY, MG;GIRVIN, JP
通讯作者：
GIRVIN, JP
影响因子：
4.4
作者：
Wilke, Robert;Gabel, Veit-Peter;Zrenner, Eberhart
通讯作者：
Zrenner, Eberhart