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Related Concept Videos

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 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...

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Related Experiment Video

Updated: May 15, 2026

Therapy Interventions for Upper Limb Amputees Undergoing Selective Nerve Transfers
07:59

Therapy Interventions for Upper Limb Amputees Undergoing Selective Nerve Transfers

Published on: October 29, 2021

Sensory feedback in upper limb prosthetics.

Christian Antfolk1, Marco D'Alonzo, Birgitta Rosén

  • 1Department of Measurement Technology & Industrial Electrical Engineering, Lund University, Lund, Scania, Sweden.

Expert Review of Medical Devices
|January 3, 2013
PubMed
Summary
This summary is machine-generated.

Restoring hand sensation after amputation is challenging. This review covers sensory substitution and modality-matched feedback techniques for prosthetic sensory feedback, detailing their pros and cons.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Rehabilitation Technology

Background:

  • Hand amputation presents significant challenges in restoring sensory function for prosthetic users.
  • Providing sensory feedback is crucial for improving prosthetic limb control and user embodiment.
  • Current prosthetic technology aims to bridge the sensory gap left by limb loss.

Purpose of the Study:

  • To provide an overview of methods for restoring sensory feedback in upper limb amputees.
  • To focus on sensory substitution and modality-matched feedback techniques.
  • To present the key features, advantages, and disadvantages of various sensory feedback approaches.

Main Methods:

  • Literature review of principal works and devices for prosthetic sensory feedback.
  • Analysis of sensory substitution methods (stimulus translation to different modalities).
  • Analysis of modality-matched feedback (stimulus transfer without translation).
  • Inclusion of direct neural stimulation as a related technique.

Main Results:

  • Sensory substitution translates sensory input to a different modality (e.g., tactile to auditory).
  • Modality-matched feedback directly conveys sensory information without translation.
  • Direct neural stimulation interfaces with peripheral nerves for sensory input.
  • Each method offers distinct benefits and drawbacks regarding implementation and user experience.

Conclusions:

  • Sensory substitution and modality-matched feedback are key strategies for prosthetic sensory restoration.
  • Understanding the trade-offs of each method is vital for prosthetic design and clinical application.
  • Further research is needed to optimize sensory feedback systems for upper limb prosthetics.