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Touch is a crucial means of receiving information. 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.
The absence of proprioception or two-point tactile discrimination on one side of the body suggests injury to the contralateral side of the primary somatosensory cortex. . However, depending on the extent of the injury, damage can range in loss of proprioception of an individual limb or the entire
Somatosensation is considered a general sense, as opposed to the special senses discussed in this section. Somatosensation is the group of sensory modalities that are associated with touch and interoception. The modalities of somatosensation include pressure, vibration, light touch, tickle, itch, temperature, pain, kinesthesia. [18]
The Multi-dimensional Theory of Anxiety [7] is based on the distinction between somatic and cognitive anxiety. The theory predicts that a negative, linear relationship between somatic and cognitive anxiety, an Inverted-U relationship between somatic anxiety and performance, and that somatic anxiety declines once performance begins although cognitive anxiety may remain high, if confidence is low.
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.
Somatosensory amplification (SSA) is a tendency to perceive normal somatic and visceral sensations as being relatively intense, disturbing and noxious. It is a common feature of hypochondriasis and is commonly found with fibromyalgia, major depressive disorder, anxiety disorders, autism spectrum disorder, and alexithymia.
In neuroanatomy, the primary somatosensory cortex is located in the postcentral gyrus of the brain's parietal lobe, and is part of the somatosensory system.It was initially defined from surface stimulation studies of Wilder Penfield, and parallel surface potential studies of Bard, Woolsey, and Marshall.
In neuroanatomy, the postcentral gyrus is a prominent gyrus in the lateral parietal lobe of the human brain.It is the location of the primary somatosensory cortex, the main sensory receptive area for the sense of touch.