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Content Provider | IEEE Xplore Digital Library |
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Author | Boshuo Wang Weiland, J.D. |
Copyright Year | 2015 |
Description | Author affiliation: Dept. of Ophthalmology, Univ. of Southern California, Los Angeles, CA, USA (Weiland, J.D.) || Dept. of Biomed. Eng., Univ. of Southern California, Los Angeles, CA, USA (Boshuo Wang) |
Abstract | Electrical impedance of the retina is a critical factor in retinal prostheses, determining the intraretinal current flow and potential distribution of electrical stimulation. Previous resistivity measurements in retina were limited to healthy retina, and didn't include mouse models, a common and important animal model in retinal research. This experimental study measured the resistivity profiles of wild-type, rd1, and rd10 mice, providing basis for computational simulations and predictive modeling studies. The peak resistance frequency method has been utilized to measure the resistivity profiles of the retina cross section, and the results show agreement with previous studies in retina of normal rats and embryonic chicks. Retinal degeneration affects the width of the profile, which is in agreement with histological measurements. Degeneration also results in lower peak resistivity. The results indicate that, on the mesoscopic scale, resistivity is dominated by spatial factors, while influence of remodeling on the cellular level is not apparent under such scale. |
Starting Page | 1650 |
Ending Page | 1653 |
File Size | 839272 |
Page Count | 4 |
File Format | |
ISSN | 1557170X |
e-ISBN | 9781424492718 |
DOI | 10.1109/EMBC.2015.7318692 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2015-08-25 |
Publisher Place | Italy |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Retina Electrodes Conductivity Impedance Mice Electrical resistance measurement Resistance neural engineering Retinal prosthesis tissue impedance retinal degeneration electrode-tissue interface |
Content Type | Text |
Resource Type | Article |
Subject | Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition |
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