Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Paralysis(also: Paralyzed, Paresis)
- The partial or complete loss of voluntary muscle function, resulting from damage to the motor nervous system. Common causes include spinal cord injury, stroke, traumatic brain injury, motor neuron diseases such as ALS, multiple sclerosis, cerebral palsy, and brainstem lesions…
- Paresis(also: Partial Paralysis)
- A partial loss of voluntary muscle movement, distinguished from full paralysis (plegia). Paresis can affect a single limb (monoparesis), one side of the body (hemiparesis), or all four limbs (tetraparesis), and may result from stroke, cerebral palsy, spinal cord injury, or…
- People with Severe Motor Disabilities(also: PSMD)
- A term used in assistive technology and human-robot interaction research to describe individuals whose motor impairments are severe enough that they cannot reliably use their hands or arms for everyday tasks, and who therefore depend on hands-free control modalities such as eye…
- Primary Lateral Sclerosis(also: PLS)
- A rare progressive neurological disease affecting the upper motor neurons, causing weakness and stiffness in the voluntary muscles, particularly in the legs, arms, and tongue. Unlike amyotrophic lateral sclerosis (ALS), PLS progresses more slowly and primarily affects upper…
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