Scientific and teaching apparatus and instruments, namely, one- or multiple channel EEG amplifier; apparatus for recording audio, audio-visual, visual and tactile data, in particular physical data, including temperature, resistance, pressure, humidity, electrical current; apparatus for the reproduction of sound, images or data; computer programs (software), namely, for database management; computer programs (software), namely, for running scientific and teaching apparatus and instruments, namely, one- or multiple channel EEG amplifier; hardware, in particular computer hardware or electronic hardware, in particular electronic circuits for controlling, regulating and measuring; all the aforesaid goods for use in neuro-feedback and bio-feedback | Medical bio-feedback, namely, one- or multiple channel EEG amplifier with integrated impedance meter; neuro-feedback apparatus, namely, one- or multiple channel EEG amplifier with integrated impedance meter; therapy apparatus, in particular high frequency electromagnetic therapy and anti-stress apparatus
