Design of 16-channel EEG signals preprocessor
- VernacularTitle:十六路脑电信号预处理器的设计
- Author:
Xijing JING
;
Jianqi WANG
;
Fei JI
;
Zhiqi SONG
- Publication Type:Journal Article
- Keywords:
EEG;
high gain;
low noise;
low offset voltage
- From:
Chinese Medical Equipment Journal
1989;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
In order to check out the cortical EEG signals of conscious and/or anesthetized rats, a 16-channel analog signals preprocessor is developed. This preprocessor can amplify and filter the primal EEG signals to transform them into ones with proper altitudes and high SNRs, and then they will be sent to the A.D converter. Some measures are taken in view of the signals' low frequencies, low SNRs and background with strong interference. When high gain made, such performances of the circuit are emphasized as low noise, low offset voltage, low gain error and heightened CMRR.
