能够测量出20μV的正弦信号和200μV以下的模拟神经信号。输出的可调电刺激脉冲的电压幅度范围为0~3.3 V或电流为0~1 mA
频率为0~1 kHz且最小脉冲宽度为1μs。
Abstract
A nerve electrical signal recording and self-adjustable stimulation closed-loop system for Parkinson’s disease is proposed.The system consists of front-end acquisition module
which acquire neural signal;microprocessor is used as control system and can generate electrical stimulation pulses according to abnormal signal
and dual mode(constant voltage and constant current)stimulation circuit for self-adjustable electrical pulses stimulation.The system has the noise floor within 8 μV(RMS).Sinusoidal signals 20 μV and simulated neural signal below 200 μV are measured.The voltage amplitude of output adjustable electrical stimulation pulses are in the range of 0~3.3 V or current of 0~1 mA
frequency of 0~1 kHz and the minimum pulse width of 1 μs.