Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Bio-Electrical Signal(also: Biosignal, Bioelectrical Signal, Physiological Signal)
- A bio-electrical signal is an electrical potential generated by biological processes in the human body, including muscle contractions (EMG), brain activity (EEG), eye movements (EOG), heart rhythms (ECG), and skin conductance (GSR). In assistive technology, bio-electrical…
- Biometric Control(also: Biometric Input, Physiological Control Interface)
- The use of measurable biological signals from the human body — such as brain waves (EEG), skin conductance (galvanic skin response), muscle electrical activity (EMG), heart rate, or eye movements — as input channels for controlling computers and assistive technology devices.…
- Biosensor(also: Physiological Sensor, Biometric Sensor)
- A device that detects and measures biological or physiological signals from the body, such as heart rate, skin conductance, temperature, or movement. Wearable biosensors are increasingly used in accessibility applications to monitor the physiological states of individuals who…
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