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Related Concept Videos

Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

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 posterior columns...
Somatosensation01:33

Somatosensation

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.
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

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...
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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 stimulus...
Equilibrium and Balance01:15

Equilibrium and Balance

The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
The Vestibular System01:29

The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.

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Related Experiment Video

Updated: May 15, 2026

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception
07:42

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception

Published on: March 3, 2018

Proprioception: Bilateral inputs first.

Matthieu P Boisgontier1, Vincent Nougier

  • 1UJF-Grenoble 1/CNRS/TIMC-IMAG UMR 5525, Grenoble, F-38041, France; Motor Control Laboratory, Research Center for Movement Control and Neuroplasticity, Group Biomedical Sciences, KU Leuven, Leuven 3000, Belgium.

Neuroscience Letters
|December 25, 2012
PubMed
Summary
This summary is machine-generated.

Muscle fatigue impairs joint position sense, particularly when proprioceptive input is unilateral. Bilateral input mitigates these effects, suggesting sensory systems prioritize information from both limbs during fatigue.

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Published on: October 24, 2013

Area of Science:

  • Neuroscience
  • Biomechanics
  • Human Movement Science

Background:

  • Muscle fatigue can alter sensory feedback, potentially impacting motor control.
  • Joint position sense (JPS) is crucial for accurate limb movement and relies on proprioceptive input.
  • The influence of fatigue on JPS may differ based on the source of proprioceptive information (unilateral vs. bilateral).

Purpose of the Study:

  • To investigate if muscle fatigue's effect on joint position sense depends on whether proprioceptive inputs are unilateral or bilateral.
  • To determine how active versus passive support of a reference limb interacts with fatigue in the indicator limb.

Main Methods:

  • Young adults performed an ankle matching task under conditions of active or passive reference limb support.
  • The indicator limb was subjected to either no fatigue or muscle fatigue.
  • Matching errors were quantified to assess joint position sense accuracy.

Main Results:

  • Without muscle fatigue, no significant difference in matching errors was found between active and passive support conditions.
  • Muscle fatigue led to increased matching errors specifically in the active support condition, not the passive.
  • These findings indicate that the detrimental effects of fatigue on JPS are influenced by the laterality of proprioceptive inputs.

Conclusions:

  • The impact of muscle fatigue on joint position sense is dependent on the nature of proprioceptive inputs (unilateral vs. bilateral).
  • Sensory systems appear to prioritize bilateral proprioceptive information over unilateral input when experiencing muscle fatigue.
  • This suggests a hierarchical weighting of sensory information for proprioception, favoring more comprehensive input sources.