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Tactile discrimination is the ability to differentiate information through the sense of touch. The somatosensory system is the nervous system pathway that is responsible for this essential survival ability used in adaptation. [1] There are various types of tactile discrimination.
Graphesthesia is the ability to recognize writing on the skin purely by the sensation of touch. Its name derives from Greek graphē ("writing") and aisthēsis ("perception"). Graphesthesia tests combined cortical sensation; therefore, it is necessary that primary sensation be intact.
Agraphesthesia, or the lack of graphesthesia ability, results from brain damage, particularly to the parietal lobe, thalamus, and secondary somatosensory cortex. [1]A significant relationship has been found between agraphesthesia and people living with Alzheimer's disease.
Two-point discrimination (2PD) is the ability to discern that two nearby objects touching the skin are truly two distinct points, not one.It is often tested with two sharp points during a neurological examination [1]: 632 [2]: 71 and is assumed to reflect how finely innervated an area of skin is.
Barognosis, or baresthesia, is the ability to evaluate the weight of objects, or to differentiate objects of different weights, by holding or lifting them. [1] [2] It is the opposite of abarognosis, the inability to evaluate the weight of objects.
Allport's Scale of Prejudice goes from 1 to 5. Antilocution : Antilocution occurs when an in-group freely purports negative images of an out-group. [ 2 ] Hate speech is the extreme form of this stage. [ 3 ]
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.
Astereognosis (or tactile agnosia if only one hand is affected) is the inability to identify an object by active touch of the hands without other sensory input, such as visual or sensory information. An individual with astereognosis is unable to identify objects by handling them, despite intact elementary tactile, proprioceptive, and thermal ...