Wireless recording of multichannel action potential for freely moving rat

The result of electrophysiological experiment reveals more realistic and integrated information while animals under testing are awake. For continuous and simultaneous multichannel wireless recording of action potentials, low-power and high data bandwidth are the most critical issues. A 400 MHz wireless recording system with 3 Mb/s data rate is presented in this paper. The front-end transmit module, including amplifiers and filters, draws 12 mA from a 3.7 V supply. To verify the system, a receive module with user interface is built specifically for the high data rate transmission. Reconstructed waveform from the receive module are 98.86% similar to the traditional wiring measurement.