Reform and Characterization of Concentric-Circle Electrode Tip for Neural Stimulating or Recording
The purpose of this paper is to obtain nondirectional electrodes for neural stimulating or recording by reforming the wedge-shape tip of concentric circle electrodes which applied to electromyography (EMG) detection. The electrode tips were ground by sand paper. The electrodes before and after ground were characterized by photomicrography and Electrochemical Impedance Spectroscopy (EIS). Animal test was taken to test the electrical performance. The photomicrographs showed that the tip of the electrode before ground was wedge-shape while the exposed surface of the inner electrode tip after reformed was cone shape and almost evenly in all directions. The impedance-frequency curve and the phase-frequency curve obtained from EIS showed that the electrical performance of the reformed electrode was steadier than before. The impendence of the electrode before reformed was 38.5±7.2kΩ and that of reformed one was 20.8-53.3 kΩ at 1 kHz, and the standard deviation is only 1.5-4.1 kΩ. Animal test showed that the amplitude recorded by the electrode before reformed changed during rotated the electrode along its longitudinal axis a certain angle and the difference between maximum and minimum is 200 mV. While the amplitude recorded by the reformed electrode is much steadier, the difference between maximum and minimum is 60 mV.
Suyang Wang Xiaoying Lü Zhigong Wang Cengyu Huang Yueling Chen
State Key Lab of Bioelectronics, Southeast University, 210096 Nanjing, P.R. China vice director of the State Key Lab of Bioelectronics, Southeast University, 210096 Nanjing,, China director of the Institute of RF- & OE-ICs, Southeast University, 210096 Nanjing, China State Key Lab of Bioelectronics, Southeast University, 210096 Nanjing, China
国际会议
2011 International Symposium on Bioelectronics and Bioinformatics(第二届国际生物医学电子学与生物信息学学术会议 ISBB 2011)
苏州
英文
5-8
2011-11-03（万方平台首次上网日期，不代表论文的发表时间）