Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Affective Congruency
- The degree to which a system's sensory outputs, interactions, and feedback align emotionally with the user's current affective state and the emotional meaning the user attaches to the experience. Distinct from perceptual congruency, affective congruency concerns whether the…
- Affective Haptics(also: Emotional Haptics)
- A subfield of haptic interaction design concerned with using tactile and kinaesthetic feedback — vibration, pressure, temperature, squeezing, stroking, heartbeat-like pulsation — to communicate, evoke, or regulate emotion. Affective haptics draws on research showing that touch…
- Affective Touch(also: Social Touch, Emotional Touch)
- The emotional and social dimension of touch, distinct from discriminative touch that identifies object properties. Affective touch is mediated primarily by C-tactile (CT) afferents in hairy skin and plays a fundamental role in social bonding, emotional communication, and…
- Arousal(also: Emotional Arousal, Activation)
- In affect and emotion research, arousal is the dimension of emotional experience that describes activation or energy level — how calm or excited a state feels — independent of whether the emotion is positive or negative (that second dimension is valence). In the widely used…
- Autonomic Nervous System(also: ANS)
- The division of the nervous system that regulates involuntary physiological processes including heart rate, blood pressure, respiration, digestion, and stress responses. The ANS has two main branches: the sympathetic nervous system (activating "fight or flight" responses) and…
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