Configuration of EEG input-unit by electric circuit evolution

The free programmable analogue array (FPAA) circuits allow the using of dynamically reconfigurable analogue electric circuits that are most suitable for the desired functions. This is of major importance in the case of in circuit-in board tester or for some medical-biological application when the signal to be measured varies not only in the quantity of signal but also in quality (EEG, ECG, impedance of the skin). One method for configuring the "self-organising" input-unit could be the suggested electrical circuit evolution.