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Towards an Adaptive Modified Quasi-Tripole Amplifier Configuration for EMG Neutralization in Neural Recording Tripoles

Pachnis, I; Demosthenous, A; Donaldson, N; (2010) Towards an Adaptive Modified Quasi-Tripole Amplifier Configuration for EMG Neutralization in Neural Recording Tripoles. In: 2010 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS. (pp. 3144 - 3147). IEEE

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Abstract

Recording neural information using implanted cuff electrodes in a tripolar arrangement is affected by myoelectric interference present at the implantation site. The performance of the recently proposed mQT was suboptimal in that tuning was required to compensate for such interference. In this work we present an improvement where interference in the mQT is removed by modeling the impedance profile of our electrodes. Simulation data show that by employing this "adaptive" approach, a 33% imbalance in the axial resistances when the interference is of 10 mV at 500 Hz and 10 kHz, results in an interference breakthrough that is about 7230 and 100 times less, respectively, at the amplifier's output.

Type:Proceedings paper
Title:Towards an Adaptive Modified Quasi-Tripole Amplifier Configuration for EMG Neutralization in Neural Recording Tripoles
Event:International Symposium on Circuits and Systems Nano-Bio Circuit Fabrics and Systems (ISCAS 2010)
Location:Paris, FRANCE
Dates:2010-05-30 - 2010-06-02
ISBN-13:978-1-4244-5309-2
Keywords:IMPEDANCE, ELECTRODE, MODEL
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering
UCL > School of BEAMS > Faculty of Engineering Science > Medical Physics and Bioengineering

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