Biosignals
Biosignals
Biological signals or biosignals, are space, time, or space-time records of a biological event such as a beating heart or a contracting muscle. The electrical, chemical, and mechanical activity that occurs during these biological event often produces signals that can be used to understand that underlying physiological mechanisms of a specific biological event or system, and which may be useful for medical diagnosis.
Biological signals can be acquired in a variety of ways [e.g. By a physician who uses a stethoscope to listen to a patient's heart sounds or with the aid of technologically advanced biomedical instruments]. Following data acquisition, biological signals are analyzed in order to retrieve useful information. Basic methods of signal analysis [e.g. Amplification, filtering, digitization, processing, and storage] can be accomplished with simple electronic circuits or with digital computers. In addition to these common procedures, sophisticated digital processing methods are quite common and can significantly improve the quality of the retrieved data. These include signal averaging, wavelet analysis, and artificial intelligence techniques.
Related pages:
- Bioelectric signals
- Biomagnetic signals
- Biochemical signals
- Biomechanical signals
- Bioacoustic signals
- Biooptical signals
