| Summary: | 碩士 === 國立臺灣大學 === 醫學工程學研究所 === 99 === It is known that the result of electrophysiology experiment reveals more realistic and integrated information while animals under testing are awake treated and freely moving. For this reason, wireless recording is an inexorable trend. However, well-developed wireless techniques such as FM, Zigbee, Bluetooth, etc. impose different limitation on the recording of neuronal signals.
This thesis is a pilot research of wireless recoding system based on the concept that high data rate is necessary for continuously multichannel recording of neuronal signals. There are a transmitter module and a receiver module in this system. Since the most critical issues of the front-end transmitter module are low power consumption and as small as possible, low power amplifiers, filters and a high data rate transmitter are implemented in this study. A receiver module is build specifically for the high data rate transmitter. It contains the analog demodulation circuit, digital demodulation and the acquisition of data via USB. To deal with the non-synchronization problem of carrier and timing between transmitter and receiver ends, digital demodulation is done by computer program. In addition, a software user interface is programmed with C++ language to control the receiver module.
A single channel compound action potentials is used for examination of the developed system, and we transmits 100 kHz sampled data at 3 Mbps while consuming 12 mA in total. Compared to the wired measurement, reconstructed wave with wireless transmission are 98.86% similar. Notwithstanding, this preliminary study provides a basis for further multichannel recoding.
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