Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference
Walking support systems are essential for blind people. In this study, the presentation of phosphene position is focused on as a method to detect obstacles for blind people. When the phosphene is used in a walking support system, it is necessary to accurately present the phosphene in at least three...
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MDPI AG
2021-08-01
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Series: | Bioengineering |
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Online Access: | https://www.mdpi.com/2306-5354/8/8/111 |
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author | Manami Kanamaru Phan Xuan Tan Eiji Kamioka |
author_facet | Manami Kanamaru Phan Xuan Tan Eiji Kamioka |
author_sort | Manami Kanamaru |
collection | DOAJ |
description | Walking support systems are essential for blind people. In this study, the presentation of phosphene position is focused on as a method to detect obstacles for blind people. When the phosphene is used in a walking support system, it is necessary to accurately present the phosphene in at least three directions of the visual field. Controlling the presentation of phosphene position has been reported in several previous studies. However, methodologies to present phosphene in multiple directions without any electric interference have not as yet been investigated. In this study, therefore, appropriate stimulation factors are clarified by the simulation of electric field on the eyeball surface which is strongly related to the presentation of phosphene position in the visual field. As a result of the simulation, it was revealed that the distance of each electrode does not give a significant effect to the eyeball surface. However, the phase of alternating current significantly changed the electric field on the eyeball surface. From investigation of the simulation results, it was clarified that the transition of the electric field on the eyeball surface can be controlled using anti-phase stimulation. In addition, the methodology to present the phosphene at least in two directions was verified. |
first_indexed | 2024-03-10T09:00:13Z |
format | Article |
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institution | Directory Open Access Journal |
issn | 2306-5354 |
language | English |
last_indexed | 2024-03-10T09:00:13Z |
publishDate | 2021-08-01 |
publisher | MDPI AG |
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series | Bioengineering |
spelling | doaj.art-411663c1cd354ace8ba9efebb7735e602023-11-22T06:49:04ZengMDPI AGBioengineering2306-53542021-08-018811110.3390/bioengineering8080111Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical InterferenceManami Kanamaru0Phan Xuan Tan1Eiji Kamioka2Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo 135-8548, JapanGraduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo 135-8548, JapanGraduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo 135-8548, JapanWalking support systems are essential for blind people. In this study, the presentation of phosphene position is focused on as a method to detect obstacles for blind people. When the phosphene is used in a walking support system, it is necessary to accurately present the phosphene in at least three directions of the visual field. Controlling the presentation of phosphene position has been reported in several previous studies. However, methodologies to present phosphene in multiple directions without any electric interference have not as yet been investigated. In this study, therefore, appropriate stimulation factors are clarified by the simulation of electric field on the eyeball surface which is strongly related to the presentation of phosphene position in the visual field. As a result of the simulation, it was revealed that the distance of each electrode does not give a significant effect to the eyeball surface. However, the phase of alternating current significantly changed the electric field on the eyeball surface. From investigation of the simulation results, it was clarified that the transition of the electric field on the eyeball surface can be controlled using anti-phase stimulation. In addition, the methodology to present the phosphene at least in two directions was verified.https://www.mdpi.com/2306-5354/8/8/111phosphenewalking support system for blind peopleelectric fieldfinite element methodeyeball surface |
spellingShingle | Manami Kanamaru Phan Xuan Tan Eiji Kamioka Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference Bioengineering phosphene walking support system for blind people electric field finite element method eyeball surface |
title | Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference |
title_full | Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference |
title_fullStr | Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference |
title_full_unstemmed | Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference |
title_short | Simulation-Based Clarification of Appropriate Factors for Presenting Phosphene in Two Directions Avoiding Electrical Interference |
title_sort | simulation based clarification of appropriate factors for presenting phosphene in two directions avoiding electrical interference |
topic | phosphene walking support system for blind people electric field finite element method eyeball surface |
url | https://www.mdpi.com/2306-5354/8/8/111 |
work_keys_str_mv | AT manamikanamaru simulationbasedclarificationofappropriatefactorsforpresentingphospheneintwodirectionsavoidingelectricalinterference AT phanxuantan simulationbasedclarificationofappropriatefactorsforpresentingphospheneintwodirectionsavoidingelectricalinterference AT eijikamioka simulationbasedclarificationofappropriatefactorsforpresentingphospheneintwodirectionsavoidingelectricalinterference |