Paper Info
Title
Portable phosphene image generator simulating cortical visual prosthesis
Abstract
Electrical stimulation delivered to the visual cortex evokes spot-like visual perceptions of light, called phosphenes. Artificial prosthetic vision is based on the concept that patterns of phosphenes can be used to convey visual information to blind patients. In the previous study, we developed a phosphene simulator which generates phosphene images evoked by cortex stimulation in accordance with the mapping model of the visual field in cerebral cortex in order to visualize the phosphene images. In this study, we further developed the system to include the following features: portability and adaptive image sensing. The simulator consists of an adaptive vision sensor, a laptop computer, and a head-mounted display. Phosphene images were generated in indoor and outdoor situations taking advantages of its compactness and adaptive output to illumination changes. We examined the effect of the number of virtual electrodes for stimulation and that of eccentricity from the center of the visual field.
Year
DOI
Venue
2012
10.1109/BioCAS.2012.6418465
Biomedical Circuits and Systems Conference
Keywords
DocType
ISSN
biomedical optical imaging,brain,helmet mounted displays,image sensors,laptop computers,medical image processing,neurophysiology,prosthetics,visual evoked potentials,visual perception,adaptive image sensing,adaptive vision sensor,artificial prosthetic vision,blind patients,cerebral cortex,eccentricity,electrical stimulation,head-mounted display,indoor situations,laptop computer,outdoor situations,portable phosphene image generator simulating cortical visual prosthesis,virtual electrodes,visual cortex evokes spot-like visual light perceptions,visual information
Conference
2163-4025
ISBN
Citations 
PageRank 
978-1-4673-2292-8
0
0.34
References 
Authors
3
5
Name
Order
Citations
PageRank
Okuno, H.141.67
tamas fehervari200.34
masaru matsuoka300.34
seiji kameda400.34
Tetsuya Yagi514027.73