The study will evaluate new methods of retinal stimulation and training with the goal of improving the visual ability of retinal prosthesis participants.
The study will test new ways to make the retinal prosthesis visual perception easier with auditory-visual training and how to make the retinal prosthesis work better at perceiving shapes.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
20
A VPU will apply asymmetric and symmetric stimulation pulses.
A VPU will apply bipolar stimulus pulses.
University of Michigan
Ann Arbor, Michigan, United States
RECRUITINGPercent change in stimulus thresholds
Compare baseline threshold with threshold of modified stimulus parameters. Threshold is measured in microCoulumbs ( the product of stimulus duration and stimulus amplitude).
Time frame: Baseline, 8 hours
Change in shape perception
As measured by elongation ratio. The elongation ratio is the ratio of major axis length to minor axis length of an ellipse. Subjects will draw shapes on a touch screen and these shapes will be fit to an ellipse.
Time frame: Baseline, 8 hours
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