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What is Biosignal ?

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The term โ€˜biosignalโ€™ is defined as any signal measured and monitored from a biological being, although it is commonly used to refer to an electrical biosignal. Electrical biosignals (bio-electrical signals) are the electrical currents generated by electrical potential differences across a tissue, organ or cell system like the nervous system.
Typical bio-electrical signals are ECG (Electrocardiogram), EMG (Electromyogram), EEG (Electroencephalogram) and EOG (Electrooculogram). GSR (Galvanic skin response) and HRV (Heart rate variability) are also thought of as bio-electrical signals, although they are not measured directly from electrical potential differences.


ECG (Electrocardiogram)

ecg signal


EEG (Electroencephalogram)

eeg signals

EMG (Electromyogram)




EOG (Electrooculogram)


GSR (Galvanic skin response)


HRV (Heart rate variability)

heart rate variability

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