Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 42 of 333
- Bimodal Bilingualism (Bimodal-Bilingual)
- The ability to use two languages that exist in different modalities — typically a signed language (visual-gestural modality) and a spoken/written language (auditory-vocal modality). Unlike unimodal bi…
- Bimodal Feedback (Dual-Modality Feedback)
- A form of interface feedback that communicates information to the user through two simultaneous sensory channels, such as auditory and haptic, visual and haptic, or auditory and visual. Bimodal feedba…
- Binary Classification (Two-Class Classification)
- A type of supervised machine learning task where the goal is to categorize items into one of exactly two classes. In accessibility research, binary classification has been applied to automatically det…
- Binary Search Tree (BST)
- A node-based binary tree data structure in which each node has at most two children and satisfies the BST property: every value in the left subtree is less than the node's value, and every value in th…
- Binary Selection (Binary Choice, Yes/No Selection)
- An interaction method where users make choices between two options at each step, progressively narrowing down to their desired selection through a series of binary decisions. Binary selection is used …
- Binaural Beats
- Binaural beats are an auditory phenomenon that occurs when two tones of slightly different frequencies are played simultaneously in separate ears through headphones, creating a perceived third tone wh…
- Binaural audio (Binaural sound, Binaural recording, 3D audio)
- An audio reproduction method that uses two channels to create a three-dimensional sound experience when listened to through headphones. Binaural recordings capture or simulate the way human ears natur…
- Bio-Electrical Signal (Biosignal, Bioelectrical Signal, Physiological Signal)
- A bio-electrical signal is an electrical potential generated by biological processes in the human body, including muscle contractions (EMG), brain activity (EEG), eye movements (EOG), heart rhythms (E…
- Bio-Signal (Biosignal, Biological Signal)
- Any measurable electrical, chemical, or mechanical signal produced by the human body that can be detected by sensors and used as input for computer systems. In assistive technology, bio-signals are us…
- Biofeedback
- A therapeutic technique in which individuals are presented with real-time measurements of their physiological variables — such as heart rate, blood oxygen saturation, muscle tension, or brain waves — …
- Biomechanics (Human Biomechanics, Movement Science)
- The study of the mechanical principles governing the movement and structure of living organisms, particularly the human body. In accessibility and rehabilitation, biomechanics is applied to understand…
- Biomedicalization of Aging (Medicalization of Aging)
- The tendency, identified by critical gerontologists, to reduce the complexity of later life to problems of physical and cognitive decline requiring medical or technological intervention. Biomedicaliza…
- Biometric Authentication (Biometrics, Biometric Identification)
- A security method that verifies a person's identity using unique biological characteristics such as fingerprints, facial features, iris patterns, or voice. For people with vision impairments, biometri…
- Biometric Authentication (Biometrics, Biometric Security, Behavioral Biometrics)
- Security technology that uses unique biological or behavioral characteristics to verify identity, including fingerprints, facial recognition, iris scans, voice patterns, and handwritten signatures. Ac…
- Biometric Control (Biometric Input, Physiological Control Interface)
- The use of measurable biological signals from the human body — such as brain waves (EEG), skin conductance (galvanic skin response), muscle electrical activity (EMG), heart rate, or eye movements — as…
- Biometric System (Biometric Technology, Biometric Identification)
- A technology system that uses innate human physical or behavioral characteristics — such as facial features, fingerprints, voice patterns, gait, or iris patterns — to identify or verify a person's ide…
- Bionic Reading (Bionic Font, Bold Fixation Points)
- A typographic technique that bolds the first few letters of each word to create artificial fixation points, guiding the eye through text more quickly and helping maintain reading focus. The technique …
- Biophilia (Biophilia Hypothesis)
- The hypothesis, popularized by biologist E. O. Wilson, that humans have an innate affinity for living things and natural systems, and that contact with nature is therefore a fundamental contributor to…
- Biopsychosocial Model (BPS Model)
- The biopsychosocial model is a holistic framework for understanding health and disability that considers the interplay of biological, psychological, and social factors in a person's experience. In con…
- Biosensor (Physiological Sensor, Biometric Sensor)
- A device that detects and measures biological or physiological signals from the body, such as heart rate, skin conductance, temperature, or movement. Wearable biosensors are increasingly used in acces…