一种带有形状记忆合金微电极的无线电遥测系统，用于对自由活动昆虫进行神经记录。
A radio-telemetry system with a shape memory alloy microelectrode for neural recording of freely moving insects.
作者信息
Takeuchi Shoji, Shimoyama Isao
机构信息
Center for International Research on MicroMechatronics, Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan.
出版信息
IEEE Trans Biomed Eng. 2004 Jan;51(1):133-7. doi: 10.1109/TBME.2003.820310.
A radio frequency (RF) telemetry system with a shape memory alloy microelectrode was designed and fabricated. The total size and weight are 15 mm x 8 mm and 0.1 g, respectively. Since the telemeter is small and light enough to be loaded on a small animal such as an insect, the system can be used for the neural recording of a freely moving insect. The RF-telemeter can transmit signals by frequency modulation transmission at 80-90 MHz. The transmitted signals can be received up to about 16 meters away from the telemeter with a high signal-to-noise ratio. The neural activity can be detected without attenuation by using an instrumentation amplifier with its input impedance set to 2 Mohms at 1 kHz. The telemeter was loaded on a cockroach and the neural activity during a free-walk was successfully measured through this telemetry system.
设计并制造了一种带有形状记忆合金微电极的射频（RF）遥测系统。其总体尺寸和重量分别为15毫米×8毫米和0.1克。由于该遥测器体积小、重量轻，足以加载到昆虫等小动物身上，因此该系统可用于自由活动昆虫的神经记录。该射频遥测器可通过80 - 90 MHz的调频传输来发送信号。在距离遥测器约16米远的地方能够以高信噪比接收传输的信号。通过使用输入阻抗在1 kHz时设置为2兆欧的仪表放大器，可以无衰减地检测神经活动。将遥测器加载到一只蟑螂身上，并通过该遥测系统成功测量了其自由行走过程中的神经活动。
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