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Related Concept Videos

Nociception01:44

Nociception

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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.
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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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Introduction to Special Senses01:26

Introduction to Special Senses

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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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Thermosensation01:43

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Peripheral thermosensation is the perception of external temperature. A change in temperature (on the surface of the skin and other tissues) is detected by a family of temperature-sensitive ion channels called Transient Receptor Potential, or TRP, receptors. These receptors are located on free nerve endings. Those detecting cold temperatures are closer to the surface of the skin than the nerve endings detecting warmth. These thermoTRP channels, while temperature selective, have relatively...
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Introduction to Sensory Receptors01:31

Introduction to Sensory Receptors

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Sensory receptors are vital in our ability to perceive and interpret the world. Sensory receptors are specialized cells in the peripheral nervous system that respond to various stimuli and enable one to experience different sensations. Based on specific criteria, sensory receptors are classified into distinct types.
The first classification criterion is based on cell type, position, and function. Some receptor cells are neurons with free nerve endings, where their dendrites are embedded in the...
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Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Related Experiment Video

Updated: Jan 18, 2026

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Ultrahigh Sensitive Human Inspired Neurons for Artificial Nociceptor Systems.

Xingjuan Song1, Yi Sun1, Bin Ren2

  • 1School of Science, Hubei University of Technology, Wuhan 430068, China.

ACS Nano
|September 9, 2025
PubMed
Summary

Researchers developed a novel neuromorphic sensor mimicking human pain perception. This ultra-sensitive device, using a Pt/BaTiO3/HfO2/TiN structure, detects tactile and visual stimuli, paving the way for advanced human-machine interfaces.

Keywords:
BTO/HfO2 memristorsneuromorphicnociceptoroxygen vacancysensory system

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Area of Science:

  • Neuromorphic engineering
  • Bioinspired electronics
  • Sensory systems

Background:

  • Mimicking human brain functions is key for advanced bioinspired electronics.
  • The human somatosensory system excels at environmental sensing and protective responses.
  • Existing sensors lack sensitivity, dynamic range, and integration capabilities.

Purpose of the Study:

  • To develop an ultra-high sensitivity cross-modal injury perception system.
  • To mimic nociceptor-like characteristics for advanced sensing.
  • To explore potential for human-machine interaction.

Main Methods:

  • Fabrication of a Pt/BaTiO3 (BTO)/HfO2/TiN device structure.
  • Utilizing oxygen vacancies in BTO to control conductive filaments in a BTO/HfO2 memristor.
  • Integration into a cross-modal system for sensory simulation.

Main Results:

  • The device exhibits ultra-high sensitivity to tactile and visual stimuli.
  • Nociceptor-like characteristics including threshold response, lack of adaptation, relaxation, and sensitization were observed.
  • Successful simulation of visual, tactile, and pain perception in a cross-modal system.

Conclusions:

  • The BTO/HfO2 memristor demonstrates exceptional sensitivity and nociceptor-like properties.
  • The cross-modal system effectively simulates human sensory perception.
  • This technology holds significant potential for next-generation human-machine interaction.