The relations between the EEG and artificial hands are analyzed for the research of artificial hands controlled by EEG.And the feasibility of artificial hands controlled by EEG is given.In order to obtain EEG information

integrated EEG-modulated circuit from scalp electrode to ADC is introduced.The amplifier circuits has the characteristics of High-input impedance(10

11

Ω)

low-noise

high-CMRR(K

CMRR

≥90 dB) and can be take everywhere satisfying the demand.