用于神经动力学研究的无线多通道传感器

C. Chestek, P. Samsukha, M. Tabib-Azar, R. Harrison, H. Chiel, S. Garverick
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引用次数: 11

摘要

本文介绍了一种生物相容性的、可植入的加利福尼亚海蛞蝓神经记录装置的设计。低压细胞外神经信号(<100 /spl mu/V)使用高性能、低功耗、低噪声前置放大器进行记录,前置放大器集成了可编程数据采集和控制,FSK遥测可通过18厘米的盐水提供5kbps的无线神经数据。遥测利用8厘米电偶极天线匹配50 /spl ω /通过将天线的末端暴露在盐水。3-V锂离子电池(160毫安时)允许16小时的记录。使用细胞外神经电极和该设备的有线接口获得的神经数据具有2.5-/spl mu/Vrms的噪声,与商用神经记录设备相当。
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Wireless multi-channel sensor for neurodynamic studies
The paper presents the design of a bio-compatible, implantable neural recording device for Aplysia californica, a common sea slug. Low-voltage extracellular neural signals (<100 /spl mu/V) are recorded using a high-performance, low-power, low-noise preamplifier that is integrated with programmable data acquisition and control, and FSK telemetry that provides 5-kbps wireless neural data through 18 cm of saltwater. The telemetry utilizes an 8-cm electric dipole antenna matched to 50 /spl Omega/ by exposing the ends of the antenna to the saltwater. A 3-V lithium ion battery (160 mAh) allows 16 hours of recording. Neural data obtained using extracellular nerve electrodes and a wired interface to this device have 2.5-/spl mu/Vrms noise, comparable to commercial neural recording equipment.
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