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PubMed · 14757342

A multichannel telemetry system for single unit neural recordings.

Iyad Obeid·Miguel A L Nicolelis·Patrick D Wolf
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Abstract

We present the design, testing, and evaluation of a 16 channel wearable telemetry system to facilitate multichannel single unit recordings from freely moving test subjects. Our design is comprised of (1) a 16-channel analog front end board to condition and sample signals derived from implanted neural electrodes, (2) a digital board for processing and buffering the digitized waveforms, and (3) an index-card sized 486 PC equipped with an IEEE 802.11b wireless ethernet card. Digitized data (up to 12 bits of resolution at 31.25k samples/s per channel) is transferred to the PC and sent to a nearby host computer on a wireless local area network. Up to 12 of the 16 channels were transmitted simultaneously for sustained periods at a range of 9 m. The device measures 5.1 cm x 8.1 cm x 12.4 cm, weighs 235 g, and is powered from rechargeable lithium ion batteries with a lifespan of 45 min at maximum transmission power. The device was successfully used to record signals from awake, chronically implanted macaque and owl monkeys.

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Action PotentialsAnalog-Digital ConversionAnimalsElectronics, MedicalElectrophysiologyEquipment DesignHaplorhiniMicroelectrodesNeuronsSignal Processing, Computer-AssistedTelemetryComparative StudyJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.

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Iyad Obeid, Miguel A L Nicolelis, Patrick D Wolf. 2004-02-15. A multichannel telemetry system for single unit neural recordings.. https://doi.org/10.1016/j.jneumeth.2003.09.023

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