標題: A Wireless and Batteryless Microsystem with Implantable Grid Electrode/3-Dimensional Probe Array for ECoG and Extracellular Neural Recording in Rats
作者: Chang, Chih-Wei
Chiou, Jin-Chern
電機資訊學士班
Undergraduate Honors Program of Electrical Engineering and Computer Science
關鍵字: microsystem;wireless;neural electrode array;biopotentials
公開日期: 1-Apr-2013
摘要: This paper presents the design and implementation of an integrated wireless microsystem platform that provides the possibility to support versatile implantable neural sensing devices in free laboratory rats. Inductive coupled coils with low dropout regulator design allows true long-term recording without limitation of battery capacity. A 16-channel analog front end chip located on the headstage is designed for high channel account neural signal conditioning with low current consumption and noise. Two types of implantable electrodes including grid electrode and 3D probe array are also presented for brain surface recording and 3D biopotential acquisition in the implanted target volume of tissue. The overall system consumes less than 20 mA with small form factor, 3.9 x 3.9 cm(2) mainboard and 1.8 x 3.4 cm(2) headstage, is packaged into a backpack for rats. Practical in vivo recordings including auditory response, brain resection tissue and PZT-induced seizures recording demonstrate the correct function of the proposed microsystem. Presented achievements addressed the aforementioned properties by combining MEMS neural sensors, low-power circuit designs and commercial chips into system-level integration.
URI: http://dx.doi.org/10.3390/s130404624
http://hdl.handle.net/11536/21943
ISSN: 1424-8220
DOI: 10.3390/s130404624
期刊: SENSORS
Volume: 13
Issue: 4
起始頁: 4624
結束頁: 4639
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