Electrical modeling of the cell-electrode interface for recording neural activity from high-density microelectrode arrays

被引：51
|
作者：
Joye, Neil [1 ]
Schmid, Alexandre [1 ]
Leblebici, Yusuf [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, STI IEL LSM, CH-1015 Lausanne, Switzerland
来源：
NEUROCOMPUTING | 2009年 / 73卷 / 1-3期
关键词：
Cell-electrode electrical model; Extracellular signal recording; High-density microelectrode array; Subcellular resolution; Three-dimensional tip electrode; PLATINUM-ELECTRODES; SIGNAL TRANSFER; IN-VITRO; STIMULATION; NEURONS; SYSTEM; RESISTANCE;
D O I：
10.1016/j.neucom.2009.09.006
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Accurate electrical models are needed to support the design of modern microelectrode arrays. The point-contact model is presented thoroughly, and an area-contact model is analytically derived in order to model the electrical characteristics of the cell-electrode interface at subcellular resolution. An optimum electrode diameter for recording the electrical activity of neurons is analytically determined at 8 mu m, with a cell diameter of 10 mu m and a typical load capacitance of 10 pF. Finally, three-dimensional tip electrodes are characterized using the area-contact model. An improvement of the electrical coupling up to 20 dB is observed for small electrodes, in simulation. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：250 / 259
页数：10
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