Glossary

Searchable terminology from accessibility, web standards, and related fields.

6660 terms — page 195 of 333

MutationObserver (DOM Mutation Observer, Mutation Records API)
An HTML5 browser API that monitors and reports changes to the Document Object Model (DOM) structure of a web page in real time, including additions and removals of elements, attribute changes, and tex…
Mutual Aid
Mutual aid is a practice of collective care in which community members voluntarily share resources, support, and assistance based on principles of solidarity and reciprocity rather than charity. In di…
Mutual Support (Mutual support in HRI, Mutual assistance)
In accessibility and human-robot interaction research, a framing that moves beyond one-way robot-supports-user or user-supervises-robot models toward a bidirectional relationship in which each party c…
Myo Armband (Thalmic Myo)
A commercially available wearable gesture-recognition armband released by Thalmic Labs in 2014 and discontinued in 2018, containing eight dry sEMG electrodes sampling at 200 Hz plus a 9-axis IMU. Desp…
Myoelectric Control
The use of electromyographic (EMG) signals from voluntary muscle contractions as control inputs for external devices, most commonly powered upper-limb prostheses but also exoskeletons, wheelchairs, an…
Myopathy (Muscle Disease)
A group of disorders affecting skeletal muscle function, characterized by muscle weakness, cramping, stiffness, or wasting. Myopathies can be inherited (muscular dystrophies) or acquired (inflammatory…
Myopia (Nearsightedness, Short-Sightedness)
A common refractive error in which the eye focuses light in front of the retina rather than on it, causing distant objects to appear blurred while near objects remain clear. Myopia occurs when the eye…
N-back Task (N-back, 2-back Task)
A working-memory paradigm in which participants view or hear a sequence of stimuli (letters, digits, positions) and, on each trial, respond when the current stimulus matches the one presented N steps …
N-gram (Bigram, Trigram, Unigram)
A contiguous sequence of n items (typically words) from a text, used in language modeling to predict the probability of a word based on its predecessors. A unigram considers single words in isolation,…
NASA Task Load Index (NASA-TLX, Task Load Index)
A widely used subjective workload assessment tool developed by NASA that measures perceived workload across six dimensions: mental demand, physical demand, temporal demand, performance, effort, and fr…
NASA Task Load Index (NASA-TLX, TLX)
A widely used subjective workload assessment tool developed by NASA that measures perceived workload across six dimensions: mental demand, physical demand, temporal demand, performance, effort, and fr…
NASA-TLX (NASA Task Load Index, Task Load Index, NASA TLX, Raw-TLX, Raw TLX, RTLX)
A widely used subjective workload assessment tool developed by NASA that measures perceived workload across six dimensions: mental demand, physical demand, temporal demand, performance, effort, and fr…
NCAM (National Center for Accessible Media)
A research and development facility at WGBH (Boston public media) that develops accessible media technologies and guidelines. NCAM created widely-adopted guidelines for describing STEM images (charts,…
NDIS (National Disability Insurance Scheme)
Australia's national scheme for funding disability support services, established in 2013. The NDIS provides individualized funding packages to eligible Australians with permanent and significant disab…
NER Model (Number, Edition, Recognition Model, NER Accuracy Model)
A caption-quality evaluation model developed by Pablo Romero-Fresco and Juan Martínez Pérez for measuring the accuracy of live subtitling and respeaking. Unlike Word Error Rate, which penalises all er…
NFC (Near Field Communication)
A short-range wireless communication technology that enables data exchange between devices held within a few centimetres of each other. NFC is built into most modern smartphones and can read passive N…
NFC Tag (Near Field Communication Tag, NFC)
An NFC (Near Field Communication) tag is a small, unpowered chip that can transmit data to a compatible smartphone or device when held within a few centimeters. In accessibility contexts, NFC tags are…
NFC accessibility (NFC tags for accessibility)
The use of Near Field Communication (NFC) technology to make physical objects, materials, and environments accessible to people with disabilities. NFC tags can be embedded in physical cards, objects, …
NGO Intervention (Non-Governmental Organization Intervention, Civil Society Intervention)
Programs and initiatives led by non-governmental organizations to address gaps in public services, including education, healthcare, and assistive technology provision for people with disabilities. In …
NGOMSL (Natural GOMS Language)
A structured notation for writing GOMS (Goals, Operators, Methods, Selection rules) models in a program-like form that is readable by humans. NGOMSL was developed by David Kieras as a more formal vari…