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A TinyOS-enabled MICA2-based wireless neural interface

IEEE Trans Biomed Eng. 2006 Jul;53(7):1416-24. doi: 10.1109/TBME.2006.873760.

Abstract

Existing approaches used to develop compact low-power multichannel wireless neural recording systems range from creating custom-integrated circuits to assembling commercial-off-the-shelf (COTS) PC-based components. Custom-integrated-circuit designs yield extremely compact and low-power devices at the expense of high development and upgrade costs and turn-around times, while assembling COTS-PC-technology yields high performance at the expense of large system size and increased power consumption. To achieve a balance between implementing an ultra-compact custom-fabricated neural transceiver and assembling COTS-PC-technology, an overlay of a neural interface upon the TinyOS-based MICA2 platform is described. The system amplifies, digitally encodes, and transmits neural signals real-time at a rate of 9.6 kbps, while consuming less than 66 mW of power. The neural signals are received and forwarded to a client PC over a serial connection. This data rate can be divided for recording on up to 6 channels, with a resolution of 8 bits/sample. This work demonstrates the strengths and limitations of the TinyOS-based sensor technology as a foundation for chronic remote biological monitoring applications and, thus, provides an opportunity to create a system that can leverage from the frequent networking and communications advancements being made by the global TinyOS-development community.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Amplifiers, Electronic
  • Analog-Digital Conversion
  • Animals
  • Brain / physiology*
  • Diagnosis, Computer-Assisted / instrumentation*
  • Diagnosis, Computer-Assisted / methods
  • Electroencephalography / instrumentation*
  • Electroencephalography / methods
  • Equipment Design
  • Equipment Failure Analysis
  • Mice
  • Mice, Inbred C57BL
  • Microelectrodes
  • Monitoring, Ambulatory / instrumentation*
  • Monitoring, Ambulatory / methods
  • Rats
  • Signal Processing, Computer-Assisted / instrumentation*
  • Telemetry / instrumentation*
  • Telemetry / methods
  • User-Computer Interface*