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Related Concept Videos

Sensory Functions of the Skin01:16

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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...
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Somatosensation01:33

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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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Related Experiment Video

Updated: Oct 5, 2025

Conformable Wearable Electrodes: From Fabrication to Electrophysiological Assessment
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Storing Information Electrically in Human Skin.

Oliver Pabst1, Øystein Magnus Sørebø1, Karoline Sjøen Andersen1

  • 1Department of Physics, University of Oslo, Oslo, Norway.

Journal of Electrical Bioimpedance
|January 24, 2022
PubMed
Summary
This summary is machine-generated.

Human skin can store binary information for up to 20 minutes. Researchers explored multi-state data storage in skin but found it challenging to differentiate more than two states.

Keywords:
Bioimpedancehuman skininformation storagememristornon-linear electrical measurements

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Area of Science:

  • Biophysics
  • Neuroscience
  • Materials Science

Background:

  • Human skin exhibits memristor-like properties, enabling short-term information storage.
  • Previous studies demonstrated information storage in skin for at least three minutes.

Purpose of the Study:

  • To investigate the feasibility of extending information storage duration in human skin up to 20 minutes.
  • To explore the potential for storing information in four distinct states within the skin, moving beyond binary storage.

Main Methods:

  • Information was encoded onto the forehead skin of subjects using DC voltage pulses applied through three electrodes.
  • The voltage pulses induced electro-osmosis in sweat ducts, creating nonlinear electrical measurements.
  • Experiments aimed to write and read information based on four states, represented by base-4 numbers.

Main Results:

  • Binary information storage in human skin was successfully demonstrated for durations up to 20 minutes.
  • The study was unable to reliably distinguish between four different states for information encoding in the skin.
  • Nonlinear electrical measurements via sweat ducts were used to attempt data encoding.

Conclusions:

  • Human skin can serve as a medium for binary information storage for extended periods (up to 20 minutes).
  • Current methods are insufficient for reliably encoding and retrieving information in multi-state formats (more than two states) in skin.
  • Further research is needed to explore advanced encoding techniques for multi-state information storage in biological tissues.