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Related Concept Videos

Somatosensation01:33

Somatosensation

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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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Major Somatic Sensory Pathways01:28

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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...
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Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

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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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Sensory Perception: Organization of the Somatosensory System01:11

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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...
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Updated: Dec 5, 2025

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Sensory stimulation enhances phantom limb perception and movement decoding.

Luke E Osborn1,2, Keqin Ding1, Mark A Hays1

  • 1Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, MD, United States of America.

Journal of Neural Engineering
|October 20, 2020
PubMed
Summary
This summary is machine-generated.

Targeted nerve stimulation enhances phantom limb perception and improves prosthetic arm control in amputees. This sensory feedback boosts movement decoding and usability, offering a pathway to more intuitive prosthesis interaction.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Rehabilitation Medicine

Background:

  • Prosthetic arm control is hindered by poor communication between the device and the user's phantom limb.
  • Enhancing phantom limb perception is crucial for improving the dexterity and usability of prosthetic limbs.

Purpose of the Study:

  • To investigate the impact of targeted transcutaneous electrical nerve stimulation (TENS) on phantom limb perception and prosthetic arm movement decoding.
  • To assess the neural correlates of enhanced phantom limb perception using electroencephalogram (EEG).

Main Methods:

  • Four participants with arm amputation underwent TENS to map phantom limb perception.
  • Myoelectric signals and EEG data were recorded during phantom hand movements before and after sensory stimulation.
  • Longitudinal tracking of sensory mapping and movement decoding performance was conducted in one participant.

Main Results:

  • Sensory stimulation significantly improved phantom limb perception and hand movement decoding.
  • EEG revealed cortical correlates of sensorimotor integration and increased motor-related neural activity.
  • Sensory mapping remained stable over two years, and movement decoding performance was stable over one year.

Conclusions:

  • Targeted nerve stimulation can enhance phantom limb perception, directly benefiting prosthetic arm control.
  • Improved sensory feedback from the phantom limb leads to better prosthesis usability and function.
  • This approach offers a promising strategy for developing more integrated and intuitive prosthetic devices.