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Other types of discrimination like graphesthesia and spatial discrimination also exist but are not as extensively researched. [3] Tactile discrimination is something that can be stronger or weaker in different people and two major conditions, chronic pain and blindness, can affect it greatly.
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.
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.
Sensory discrimination disorder involves the incorrect processing of sensory information. [1] The SDD subtypes are: [48] Visual; Auditory; Tactile; Gustatory (taste) Olfactory (smell) Vestibular (balance, head position and movement in space) Proprioceptive (feeling of where parts of the body are located in space, muscle sensation)
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 ...
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.
There does not seem to be a meta-analysis of studies investigating the connection between discrimination and health, but a review of 33 studies on the topic reveals that perceived discrimination is associated to poorer mental health and health-related decisions in Latinos residing in the U.S. [80] However, the review did not find evidence of a ...
The dorsal column–medial lemniscus pathway (DCML) (also known as the posterior column-medial lemniscus pathway (PCML) is the major sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (body position) from the skin and joints.