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Related Concept Videos

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...
Nociception01:44

Nociception

Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...
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.
Sensory Functions of the Skin01:16

Sensory Functions of the Skin

The skin is the largest organ of the human body and plays a crucial role in our sensory perception. It contains a vast network of sensory receptors that contribute to the skin's protective function by perceiving physical, biological, and environmental cues and generating relevant responses.
There are two main categories of receptors on the skin: capsulated and non-capsulated. The non-capsulated ones are mainly the pain receptors. The capsulated ones can be further categorized based on the...
Spinal Cord: Information Processing01:10

Spinal Cord: Information Processing

The spinal cord is an integral hub for motor and sensory information that enables the brain to communicate with the peripheral nervous system (PNS). This communication consists of relaying sensory data and transmission of motor commands.
Sensory Information Processing
Sensory information processing begins at the sensory receptors located in the skin and other tissues, which detect somatic sensory stimuli such as touch, temperature, or pain. These receptors function as catalysts, initiating...
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...

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Related Experiment Video

Updated: May 8, 2026

The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
07:09

The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice

Published on: July 16, 2014

Peripheral input and its importance for central sensitization.

Ralf Baron1, Guy Hans, Anthony H Dickenson

  • 1Division of Neurological Pain Research and Therapy, Schleswig-Holstein University Hospital, Kiel, Germany.

Annals of Neurology
|September 11, 2013
PubMed
Summary
This summary is machine-generated.

Peripheral tissue or nerve damage can cause central sensitization, a key factor in chronic pain conditions like allodynia and hyperalgesia. Effective treatment requires addressing both peripheral and central nervous system mechanisms.

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Last Updated: May 8, 2026

The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
07:09

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Published on: July 16, 2014

Chronic Post-Ischemia Pain Model for Complex Regional Pain Syndrome Type-I in Rats
07:12

Chronic Post-Ischemia Pain Model for Complex Regional Pain Syndrome Type-I in Rats

Published on: January 21, 2020

Area of Science:

  • Neuroscience
  • Pain Research
  • Clinical Neurology

Background:

  • Pain often originates from peripheral tissue or nerve damage.
  • This damage triggers enhanced neurotransmitter release in the spinal cord, leading to central sensitization.
  • Central sensitization is characterized by hyperexcitable spinal neurons, manifesting as windup and long-term potentiation.

Purpose of the Study:

  • To elucidate the mechanisms underlying central sensitization.
  • To discuss the clinical manifestations and diagnostic challenges of central sensitization.
  • To highlight the need for multimodal treatment strategies targeting both peripheral and central nervous system components.

Main Methods:

  • Review of existing literature on pain mechanisms and central sensitization.
  • Analysis of the role of primary afferent C fibers and other nerve fibers in synaptic strengthening.
  • Discussion of diagnostic tools such as quantitative sensory testing and functional magnetic resonance imaging.

Main Results:

  • Repetitive C fiber activation strengthens nociceptive transmission.
  • Facilitation of non-nociceptive Aβ and nociceptive Aδ fibers contributes to allodynia and hyperalgesia.
  • Central sensitization is maintained by peripheral input and modulated by descending controls.

Conclusions:

  • Central sensitization is a complex process involving synaptic changes and altered neuronal excitability.
  • Diagnosing central sensitization requires integrated subjective and objective measures.
  • Multimodal therapies are essential to desensitize both peripheral and central nervous systems for effective pain management.