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Author Ji, J. ♦ Najafi, K. ♦ Wise, K.D.
Sponsorship IEEE Engineering in Medicine and Biology Society
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1964
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Engineering & allied operations
Subject Keyword Demultiplexing ♦ Microelectrodes ♦ Probes ♦ Crosstalk ♦ Gain ♦ Bandwidth ♦ Noise level ♦ Power supplies ♦ Automatic control ♦ Built-in self-test
Abstract The authors report a low-noise demultiplexing system capable of reconstructing multichannel single-unit neural signals derived from multiplexed microelectrode arrays. The overall multiplexing-demultiplexing system realizes ten channels, a per-channel gain of 68 dB, a bandwidth from 100 Hz to 6 kHz, and an equivalent noise level (referred to the probe input) of 13 mu V RMS. It provides for signaling over the power supply to allow the control of on-chip probe functions such as self-testing. The interchannel crosstalk is less than 3%, and switching noise is suppressed by blanking the transition intervals. The 200-kHz probe sample clock is tracked automatically over a range of 150 to 250 kHz. Neural signals as low as 20 mu V (typically 640 mu V at the demultiplexing system input) can be reconstructed. The overall system organization is compatible with the demultiplexing of as many as 40 time-multiplexed electrode channels from a single probe data line.<<ETX>>
Description Author affiliation :: Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
ISSN 00189294
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1991-01-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 38
Issue Number 1
Size (in Bytes) 753.77 kB
Page Count 7
Starting Page 75
Ending Page 81


Source: IEEE Xplore Digital Library