Knowledge Base /B /Biosignal
Biosignal
Knowledge Base → B
Biosignal is a signal that can be continually measured and monitored from biological beings. The term biosignal is often used to mean bio-electrical signal but in fact, biosignal refers to both electrical and non-electrical signals.
Electrical biosignals ( «bio-electrical» signals) are usually taken to be (changes in) electric currents produced by the sum of electrical potential differences across a specialized tissue, organ or cell system like then nervous system. Examples of bio-electrical signals are:
- Electroencephalogram (EEG)
- Magnetoencephalogram (MEG)
- Galvanic skin response (GSR)
- Electrocardiogram (ECG)
- Electromyogram (EMG)
- Heart Rate Variability (HRV)
Bio-signals may also refer to any non-electrical signal that is capable of being monitored from biological beings, such as mechanical signals (e.g. the mechanomyogram or MMG), acoustic signals (e.g. phonetic and non-phonetic utterances, breathing), chemical signals (e.g. pH, oxygenation) and optical signals (e.g. movements).
