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Tangible symbols are a type of augmentative and alternative communication (AAC) that uses objects or pictures that share a perceptual relationship with the items they represent as symbols. A tangible symbol's relation to the item it represents is perceptually obvious and concrete – the visual or tactile properties of the symbol resemble the ...
Tactile graphics, including tactile pictures, tactile diagrams, tactile maps, and tactile graphs, are images that use raised surfaces so that a visually impaired person can feel them. They are used to convey non-textual information such as maps, paintings, graphs and diagrams. Tactile graphics can be seen as a subset of accessible images.
This photo shows tactile markings identifying stairs for visually impaired people. The somatosensory system , or somatic sensory system is a subset of the sensory nervous system . It has two subdivisions, one for the detection of mechanosensory information related to touch, and the other for the nociception detection of pain and temperature. [ 1 ]
Visual imagery pertains to graphics, visual scenes, pictures, or the sense of sight. Auditory imagery pertains to sounds, noises, music, or the sense of hearing. (This kind of imagery may come in the form of onomatopoeia). Olfactory imagery pertains to odors, aromas, scents, or the sense of smell.
The symbols for the thirteen macronutrient elements in biology spell CHOPKINS CaFe Mg NaCl, or C. Hopkins Cafe [food tastes] m[ighty] g[ood] with salt (NaCl). Note however, that this popular and useful mnemonic [ 1 ] is typical in that it is neither comprehensive nor context-free.
A tactile alphabet is a system for writing material that the blind can read by touch. While currently the Braille system is the most popular and some materials have been prepared in Moon type, historically, many other tactile alphabets have existed: Systems based on embossed Roman letters: Moon type; Valentin Haüy's system (in italic style)