TY - GEN
T1 - Clarification of Perceived Phosphenes Positions by tACS considering Electrical Current flow and Exposed Visual Retinae
AU - Kanamaru, Manami
AU - Tan, Phan Xuan
AU - Kamioka, Eiji
N1 - Publisher Copyright:
© 2020 IEEE.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - Phosphene is a phenomenon that human can perceive a flash of light in the brain when the human's visual pathway is stimulated electrically or magnetically. Therefore, blind people can also perceive phosphenes even though their crystalline lenses are not functioning. There are great hopes that phosphenes can be used as visual information for a walking support system for blind people. However, the phosphenes induction mechanism has not as yet been clarified since the mechanism of the conventional theory is inconsistent with real experimental results in terms of the perceived phosphenes position. In this paper, a new hypothesis on the phosphenes induction mechanism, which focuses on exposed visual retinae and the stimulated area by electrical current, is posited based on the anatomical characteristics of eyeball. Through experimental evaluation, our hypothesis is successfully verified.
AB - Phosphene is a phenomenon that human can perceive a flash of light in the brain when the human's visual pathway is stimulated electrically or magnetically. Therefore, blind people can also perceive phosphenes even though their crystalline lenses are not functioning. There are great hopes that phosphenes can be used as visual information for a walking support system for blind people. However, the phosphenes induction mechanism has not as yet been clarified since the mechanism of the conventional theory is inconsistent with real experimental results in terms of the perceived phosphenes position. In this paper, a new hypothesis on the phosphenes induction mechanism, which focuses on exposed visual retinae and the stimulated area by electrical current, is posited based on the anatomical characteristics of eyeball. Through experimental evaluation, our hypothesis is successfully verified.
KW - Blind people
KW - eye movement
KW - phosphene
KW - tACS
KW - visual retina
UR - http://www.scopus.com/inward/record.url?scp=85102028721&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85102028721&partnerID=8YFLogxK
U2 - 10.1109/R10-HTC49770.2020.9356977
DO - 10.1109/R10-HTC49770.2020.9356977
M3 - Conference contribution
AN - SCOPUS:85102028721
T3 - IEEE Region 10 Humanitarian Technology Conference, R10-HTC
BT - Proceedings of 2020 IEEE 8th R10 Humanitarian Technology Conference, R10-HTC 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE R10 Humanitarian Technology Conference, R10-HTC 2020
Y2 - 1 December 2020 through 3 December 2020
ER -