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Related Concept Videos

Somatosensation01:33

Somatosensation

42.8K
The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.
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Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

2.0K
The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
2.0K
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

10.9K
The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the...
10.9K
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
2.2K
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

8.0K
Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
8.0K
Somatic Spinal Reflexes01:22

Somatic Spinal Reflexes

4.5K
Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord.
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
4.5K

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Related Experiment Video

Updated: Dec 29, 2025

Study Motor Skill Learning by Single-pellet Reaching Tasks in Mice
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Study Motor Skill Learning by Single-pellet Reaching Tasks in Mice

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Somatosensory changes associated with motor skill learning.

Jasmine L Mirdamadi1,2, Hannah J Block1,2

  • 1Program in Neuroscience, Indiana University, Bloomington, Indiana.

Journal of Neurophysiology
|January 30, 2020
PubMed
Summary
This summary is machine-generated.

Motor skill learning involves changes in proprioception and short-latency afferent inhibition (SAI). Enhanced SAI after practice correlated with greater motor skill improvements, suggesting its role in learning new movement patterns.

Keywords:
motor skill learningplasticityproprioceptionsomatosensory functiontranscranial magnetic stimulation

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Area of Science:

  • Neuroscience
  • Motor Control
  • Somatosensory System

Background:

  • Motor adaptation, linked to somatosensory plasticity, differs from motor skill learning.
  • Motor skill learning involves acquiring new movement patterns without perturbation, often limited by speed-accuracy trade-offs.

Purpose of the Study:

  • To investigate somatosensory changes during motor skill learning.
  • To explore the relationship between behavioral and neurophysiological somatosensory changes and skill acquisition.

Main Methods:

  • Healthy adults practiced a maze-tracing task using a robotic manipulandum.
  • Proprioceptive sensitivity was assessed using a passive two-alternative forced-choice task.
  • Short-latency afferent inhibition (SAI) was measured to index somatosensory projections to the motor cortex.

Main Results:

  • Motor practice improved the speed-accuracy function, indicating enhanced skill.
  • Proprioceptive sensitivity improved after practice.
  • SAI increased post-training, and greater increases correlated with larger motor skill improvements.

Conclusions:

  • Motor skill learning is associated with behavioral and neurophysiological somatosensory changes.
  • Increased SAI may be a functional mechanism underlying motor skill acquisition.
  • Further research is needed to determine parameters influencing the link between somatosensory function and motor learning.