Glossary

Search results

Sensory Based Motor Disorder(also: SBMD)

A subtype of Sensory Processing Disorder in which the brain has difficulty using sensory information to plan and execute motor actions. SBMD encompasses two sub-types: postural disorder, which affects balance and core stability, and dyspraxia, which impacts motor planning and…

Spasm(also: Muscle Spasm, Spasticity)

A sudden, involuntary contraction of a muscle or group of muscles that can cause uncontrolled movement or a temporary inability to move. Spasms are common in conditions such as cerebral palsy, spinal cord injury, and multiple sclerosis. In the context of computer accessibility,…

Spastic Cerebral Palsy(also: Spastic CP)

The most common subtype of cerebral palsy, characterised by stiff or tight muscles (hypertonia) and exaggerated reflexes, caused by damage to the motor cortex or corticospinal tracts of the developing brain. Subtypes are further classified by the limbs affected (diplegia,…

Spastic Quadriplegia(also: Spastic Tetraplegia)

The most severe subtype of spastic cerebral palsy, characterised by stiff, tight muscles (spasticity) and significantly reduced voluntary movement in all four limbs and often the trunk. People with spastic quadriplegia commonly use powered wheelchairs and may rely on switch…

Spinal Cord Injury(also: SCI)

Damage to the spinal cord that results in partial or complete loss of motor function, sensation, or both below the level of injury. The location of injury along the spine determines which abilities are affected: injuries at higher vertebrae (e.g., C4-C5) affect more of the body,…

Spinal Muscular Atrophy(also: SMA)

Spinal Muscular Atrophy (SMA) is an autosomal recessive neurodegenerative disease characterized by degeneration of spinal cord motor neurons, atrophy of skeletal muscles, and generalized weakness. Affecting approximately 1 in 6,000-10,000 live births, SMA is the leading genetic…

Switch Keyboard(also: Scanning Keyboard, On-Screen Scanning Keyboard)

A switch keyboard is a virtual keyboard interface designed for people with severe motor disabilities who cannot use a standard keyboard or pointing device. It works through a scanning mechanism: a cursor automatically moves across rows and columns of the keyboard, and the user…

7 results.