Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Gait Cycle(also: Walking cycle)
- The repeating pattern of leg movement during walking, defined from one foot contact with the ground to the next contact of the same foot. The cycle is divided into two main phases: the stance phase (foot on ground, bearing weight), which includes heel strike, midstance, and…
- Muscle Contraction(also: Voluntary Muscle Activation)
- The deliberate tensing of a muscle group that generates an electrical signal (electromyographic or EMG signal) detectable by surface electrodes. In assistive technology, intentional muscle contractions serve as input signals for controlling devices when traditional input methods…
- Pupil Diameter(also: Pupil Size, Aperture Size)
- The width of the opening in the iris through which light enters the eye, typically ranging from about 2mm in bright light to 8mm in darkness. Pupil diameter significantly affects visual quality because it determines how much of the eye's optical aberrations influence the image…
- Sensorimotor(also: Sensorimotor System, Sensorimotor Control)
- Relating to the integration of sensory input (proprioception, vision, touch) with motor output (muscle activation and coordinated movement). Sensorimotor processes let people plan, execute, and correct movements in real time, usually without conscious effort. Neurological and…
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