The goal of this paper is to develop a multifunctional measurement system for neuron-microelectrode interface study by LabVIEW. The system uses a commercial 60-channel microelectrode array (MEA) as an interface platform. These online functions of neuronal stimulation, extracellular potential recording, impedance monitoring, and data storage have been integrated into this system. Two offline analysis functions of wavelet de-noising and artifact removing are also included. The former two online functions are executed respectively by a NI-DAQ card and by a self-made analog frond-end amplifier, and Agilent 4284A LCR meter makes the impedance measurement. We have completed the basic functional verifications on a cultured MEA with PC-12.
This paper presents the realization of the radio frequency (RF) power and data transmission for implantablc micro-stimulators This implantable devicc includes an intemal RF front-end circuit, a control circuit, and a stimulator. A 2MHc AM modulated sibmal including the power and data nccessary for the implantable devicc is received, and a stable DC voltage and digital data will he extracted to stimulate the neuromuscular stimulation. The stimulator is a currentsource stimulator, which is capable to generate a wide range of stimulation waveforms and stimulation patterns for a nerve cuff electrode. In this paper, most of the integrated circuits for the implantablc device have hecn proposed and verified by using Hspice according to the technology ofTSMC 0.25 um CMOS praccss.
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