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Chronic fatigue syndrome (ME/CFS) People with chronic fatigue syndrome display a hypersensitivity to noxious stimuli, stress, and pain. [30] These sensitivities are partially explained by abnormal neurotransmitter pathways involving serotonin and acetylcholine. [30]
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 ]
Evaluation of somatosensory stimuli are limited by the patient's interpretation of sensation in response to testing. Tactile sensation is tested with a cotton wisp or light touch with a finger. Pain is assessed by pinprick or pinwheel (Wartenberg wheel). A 128 Hz tuning fork is used for testing vibrations. [citation needed]
Bodily sensations may be amplified by psychological stress or through the belief that one's bodily sensations are symptoms of illness , expecting oneself or others to be ill (context), being anxious or depressed, for example (mood), or paying attention to the sensations . Some individuals may "amplify all forms of distress."
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 ]
The visual system and the somatosensory system are active even during resting state fMRI Activation and response in the sensory nervous system. The sensory nervous system is a part of the nervous system responsible for processing sensory information.
An example is the somatosensory map which is a projection of the skin's surface in the brain that arranges the processing of tactile sensation. This type of somatotopic map is the most common, possibly because it allows for physically neighboring areas of the brain to react to physically similar stimuli in the periphery or because it allows for ...
These two types of mechanoreceptors have small discrete receptive fields and are thought to underlie most low-threshold use of the fingers in assessing texture, surface slip, and flutter. Mechanoreceptors found in areas of the body with less tactile acuity tend to have larger receptive fields. [citation needed]