A fully-integrated mixed-signal neural processing module for implantable multi-channel cortical recording

Author

Sodagar, Amir M. ; Wise, Kensall D. ; Najafi, Khalil

Author_Institution

Center for Wireless Integrated Microsyst. (WIMS), Univ. of Michigan, Ann Arbor, MI

fYear

2006

fDate

Nov. 29 2006-Dec. 1 2006

Firstpage

37

Lastpage

40

Abstract

A 64-channel neural processor has been developed for use in an implantable neural recording microsystem. In the Scan Mode, the processor is capable of detecting neural spikes using programmable positive, negative, or biphasic thresholds. Spikes are tagged with their associated channel addresses and formed into 18 b data words that are sent serially to the external host. In the Monitor Mode, two channels can be selected and viewed at high resolution for studies where the entire signal is of interest. The processor runs from a 3 V supply and a 2 MHz clock, with a channel scan rate of 64 kS/sec and an output bit rate of 2 Mbps.

Keywords

bioelectric potentials; biomedical electrodes; biomedical telemetry; brain; medical signal detection; medical signal processing; microelectrodes; neurophysiology; patient diagnosis; 64-channel neural processor; action potentials recording; bidirectional telemetry link; biphasic spike detection; biphasic thresholds; bit rate 2 Mbit/s; frequency 2 MHz; fully-integrated mixed-signal neural processing module; implantable multichannel cortical recording; implantable neural recording microsystem; monitor mode; negative spike detection; neural spike detection; positive spike detection; programmable negative thresholds; programmable positive thresholds; recording microprobes; scan mode; voltage 3 V; Bit rate; Circuits; Clocks; Heart; Implants; Monitoring; Probes; Signal processing; Signal resolution; Telemetry;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference, 2006. BioCAS 2006. IEEE

Conference_Location

London

Print_ISBN

978-1-4244-0436-0

Electronic_ISBN

978-1-4244-0437-7

Type

conf

DOI

10.1109/BIOCAS.2006.4600302

Filename

4600302