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Related Concept Videos

Somatosensation01:33

Somatosensation

36.9K
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.
36.9K
Cerebral Hemispheres01:05

Cerebral Hemispheres

3.8K
The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
3.8K
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

3.2K
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...
3.2K
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

5.0K
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...
5.0K
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

9.9K
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...
9.9K
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

8.4K
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...
8.4K

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Articles linked to this work by shared authors, journal, and citation graph.

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Same author

Left unilateral behavioral disorder with diagonistic dyspraxia following callosal and right centrum semiovale lesions: Implications for interhemispheric and fronto-parietal motor connectivity.

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[Behavioral variant frontotemporal dementia initially diagnosed by long-standing walking habit: an autopsy case].

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Related Experiment Video

Updated: May 1, 2026

Testing Tactile Masking between the Forearms
08:05

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

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[Corpus callosum and somesthetic transfer].

Nami Ihori1, Mitsuru Kawamura

  • 1Department of Rehabilitation, Kawasaki Cooperative Hospital.

Brain and Nerve = Shinkei Kenkyu No Shinpo
|April 22, 2014
PubMed
Summary

Damage to the corpus callosum, specifically its anterior or dorsal posterior truncus, disrupts interhemispheric sensory transfer. This impacts tactile naming and reading abilities, highlighting the brain

Area of Science:

  • Neuroscience
  • Neuroanatomy
  • Sensory processing

Context:

  • Investigates somesthetic disconnection in patients with corpus callosum lesions.
  • Examines the role of the corpus callosum in interhemispheric sensory information transfer.

Purpose:

  • To elucidate the specific role of the corpus callosum in somatosensory processing.
  • To understand the neural basis of tactile perception and integration.

Summary:

  • Describes somesthetic disconnection in three patients with callosal lesions.
  • Highlights the anterior and/or dorsal posterior truncus of the corpus callosum as crucial for interhemispheric transfer of discriminative sensations.
  • Suggests this region is vital for integrated somesthetic information required for tactile naming and somesthetic reading.

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Last Updated: May 1, 2026

Testing Tactile Masking between the Forearms
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Impact:

  • Provides a hypothesis for the neural mechanisms of somesthetic communication.
  • Advances understanding of how the brain integrates sensory information across hemispheres.
  • Informs potential therapeutic strategies for sensory processing disorders resulting from callosal damage.