This paper reports an integrated 64-channel neural recording sensor. Neural signals are acquired, filtered, digitized and compressed in the channels. Additionally, each channel implements an auto-calibration mechanism which configures the transfer characteristics of the recording site. The system has two transmission modes; in one case the information captured by the channels is sent as uncompressed raw data; in the other, feature vectors extracted from the detected neural spikes are released. Data streams coming from the channels are serialized by an embedded digital processor. Experimental results, including in vivo measurements, show that the power consumption of the complete system is lower than 330μW.

Date Published: 1 June 2015
PDF: 9 pages
Proc. SPIE 9518, Bio-MEMS and Medical Microdevices II, 951806 (1 June 2015); doi: 10.1117/12.2178474

Published in SPIE Proceedings Vol. 9518:
Bio-MEMS and Medical Microdevices II
Sander van den Driesche, Editor(s)