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The experiments have been performed using a PCcomputer with a data acquisition board from NationalInstruments NI PCI-6110E, NI BNC-2110 adapter,an analogical oscilloscope for visualizing the signalsand a BNC cable to link the board output and theoscilloscope input (fig. 3).The EEG signal from figure 5 is obtained using thesame values for signal parameters like in the previouscase with one exception, the frequence value is 100.Fig. 3. Connection between computer andoscilloscopeThe ECG signal from next figure is obtained afterselection of signal type, by using parametersamplitude, frequency, sampling frequency withvalues 1, 1000, 44000. This signal is characteristicfor a intense physical activity. By the decrease orincrease of signal frequence it is obtained a bigger orlower heart rate.a)b)Fig. 5. EEG signalFurther, in order to obtain the VAG signal (fig. 6) theonly different parameter value is again for frequencyand is 2000.a)b)a)Fig. 4. ECG signal