Glossary

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NVDA(also: NonVisual Desktop Access)

A free, open-source screen reader for Microsoft Windows developed by NV Access. NVDA enables people who are blind or have low vision to use computers by reading on-screen text aloud through a speech synthesizer or outputting to a refreshable Braille display. As open-source…

Nemeth Code(also: Nemeth Braille Code for Mathematics and Science)

A specialized braille code developed by Abraham Nemeth for representing mathematics, science notation, and technical symbols. Nemeth Code provides a comprehensive system for expressing equations, fractions, subscripts, superscripts, and other mathematical constructs in braille.…

Neural Plasticity(also: Neuroplasticity, Brain Plasticity)

The brain's ability to reorganize itself by forming new neural connections throughout life. In the context of accessibility, neural plasticity explains how people who are blind or visually impaired develop enhanced auditory and tactile processing abilities—the brain regions that…

Nystagmus(also: Involuntary eye movement, Dancing eyes)

A condition characterized by involuntary, repetitive, rhythmic movements of the eyes, which may move side to side (horizontal), up and down (vertical), or in a circular pattern (rotary). Nystagmus can be congenital (present from birth) or acquired later in life due to…

Nystagmus(also: Involuntary Eye Movement, Dancing Eyes)

A condition involving involuntary, repetitive, and rhythmic movements of the eyes, which can be horizontal, vertical, or rotary. Nystagmus can be congenital (present from birth) or acquired later in life due to neurological conditions, medications, or other causes. It often…

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