The somatosensory system is spread through all major parts of the vertebrate body. It consists both of sensory receptors and sensory neurons in the periphery (skin, muscle and organs for example), to deeper neurons within the central nervous system. The somatosensory cortex is the part of your brain that processes information from your body’s senses – like touch, pressure, temperature, and pain.

Understanding the Context

It also helps with proprioception, which is your awareness of body position and movement. The somatosensory system includes peripheral receptors and dedicated neural pathways that transduce environmental and internal stimuli to produce sensations of touch (mechanotransduction), temperature (thermoreception), pain (nociception), and body position (proprioception). The somatosensory system is regulated by receptors that are spread throughout the body and measure a number of different sensory modalities in the body. These sensations can be divided into three main divisions: external stimuli, internal stimuli, and the sense of where the body is in space.

SOMATOSENSORY EVOKED POTENTIALS (SSEP) – Neurozentrum Biel-Seeland

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Key Insights

The somatosensory system is the part of the sensory system concerned with the conscious perception of touch, pressure, pain, temperature, position, movement, and vibration, which arise from the... The somatosensory system is a model sensory system for understanding how external stimuli are represented in the brain. It demonstrates both the precision of neural coding in primary sensory areas and the adaptability of the brain in response to changes in input or experience. The somatosensory system consists of the peripheral receptors and neural pathways through which the nervous system detects and processes information about touch (mechanoception), pain... It is no accident that the somatosensory cortex is located directly adjacent to the motor cortex, which initiates voluntary movements.

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Final Thoughts

Both external and internal sensations provide essential information to guide when and how we move.