Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Beta Rhythm(also: Beta Wave, Beta Oscillation)
- A pattern of electrical brain activity oscillating at approximately 13-30 Hz, commonly recorded over the sensorimotor cortex. Like mu rhythms, beta rhythms are modulated by movement and motor imagery — they are suppressed during movement and show a characteristic post-movement…
- 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.…
- BrainGate(also: BrainGate2)
- A long-running multi-site clinical trial program (ClinicalTrials.gov NCT00912041) that evaluates implantable intracortical brain-computer interfaces in people with paralysis from spinal cord injury, ALS, brainstem stroke, and other neurological conditions. Participants receive…
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