Randles Circuit Model for Characterizing a Porous Stimulating Electrode of the Retinal Prosthesis

• Nomura Shuhei

  Faculty of Medical Technology, Teikyo University Faculty of Medical Sciences, Kyushu University Division of Materials Science, Nara Institute of Science and Technology

• Tashiro Hiroyuki

  Faculty of Medical Sciences, Kyushu University Division of Materials Science, Nara Institute of Science and Technology

• Terasawa Yasuo

  Division of Materials Science, Nara Institute of Science and Technology Artificial Vision Institute, Research and Development Division, Nidek Co., Ltd.

• Nakano Yukari

  Artificial Vision Institute, Research and Development Division, Nidek Co., Ltd.

• Haruta Makito

  Division of Materials Science, Nara Institute of Science and Technology

• Sasagawa Kiyotaka

  Division of Materials Science, Nara Institute of Science and Technology

• Takehara Hironari

  Division of Materials Science, Nara Institute of Science and Technology

• Ohta Jun

  Division of Materials Science, Nara Institute of Science and Technology

Bibliographic Information

Other Title

• 人工視覚システム用多孔性刺激電極界面特性解析のためのRandles型回路モデルの提案
• ジンコウ シカク システムヨウ タコウセイ シゲキ デンキョク カイメン トクセイ カイセキ ノ タメ ノ Randlesガタ カイロ モデル ノ テイアン

Abstract

To develop a visual prosthesis, it is necessary to understand the changes in the electrochemical properties of stimulating electrodes implanted in the body. To evaluate these properties, we examined three types of equivalent circuit models that represented the electrode interface 23 weeks after the stimulation began. The results indicated that the Randles circuit model with Warburg impedance exhibited the difference in the electrochemical properties of the active and inactive electrodes, which might have been caused by the desorption of adsorbed protein from the electrode surface owing to the stimulation current. This model can be used to characterize the changes in the properties of porous stimulating electrodes.

Journal

• IEEJ Transactions on Sensors and Micromachines

  IEEJ Transactions on Sensors and Micromachines 141 (5), 134-140, 2021-05-01

  The Institute of Electrical Engineers of Japan

Keywords

• visual prosthesis
• artificial retina
• neural stimulation
• stimulating electrode
• equivalent circuit analysis
• electrochemical impedance spectroscopy

Details

• CRID: 1390006432293991808
• NII Article ID: 130008033024
• NII Book ID: AN1052634X
• DOI: 10.1541/ieejsmas.141.134
• ISSN: 13475525
• ISSN: 13418939
• NDL BIB ID: 031498964
• Web Site: http://id.ndl.go.jp/bib/031498964
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031498964
• Web Site: https://www.jstage.jst.go.jp/article/ieejsmas/141/5/141_134/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed