Title :
NeuralWISP: A Wirelessly Powered Neural Interface With 1-m Range
Author :
Yeager, D.J. ; Holleman, J. ; Prasad, R. ; Smith, J.R. ; Otis, B.P.
Author_Institution :
Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA
Abstract :
We present the NeuralWISP, a wireless neural interface operating from far-field radio-frequency RF energy. The NeuralWISP is compatible with commercial RF identification readers and operates at a range up to 1 m. It includes a custom low-noise, low-power amplifier integrated circuit for processing the neural signal and an analog spike detection circuit for reducing digital computational requirements and communications bandwidth. Our system monitors the neural signal and periodically transmits the spike density in a user-programmable time window. The entire system draws an average 20 muA from the harvested 1.8-V supply.
Keywords :
brain-computer interfaces; low noise amplifiers; low-power electronics; medical signal processing; neurophysiology; radiofrequency identification; radiofrequency integrated circuits; user interfaces; NeuralWISP; analog spike detection circuit; commercial RF identification readers; current 20 muA; custom low-noise amplifier integrated circuit; digital computational requirements; distance 1 m; far-field radio-frequency RF energy; low-power amplifier integrated circuit; neural signal monitoring; neural signal processing; user-programmable time window; voltage 1.8 V; wirelessly-powered neural interface; Detectors; FCC; Microcontrollers; RFID tags; Radio frequency; Radiofrequency identification; Sampling methods; Strain measurement; Temperature measurement; Wireless sensor networks; Brain machine interface; neural data acquisition; neural telemetry; radio-frequency identification (RFID); single–unit recordings; wireless sensor;
Journal_Title :
Biomedical Circuits and Systems, IEEE Transactions on
DOI :
10.1109/TBCAS.2009.2031628
