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Related Concept Videos

What is a Sensory System?01:31

What is a Sensory System?

Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.
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...
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...
Introduction to Special Senses01:26

Introduction to Special Senses

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 functions.
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex. This...

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Related Experiment Video

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A Tactile Automated Passive-Finger Stimulator TAPS
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A Multifunctional Tactile Sensory System for Robotic Intelligent Identification and Manipulation Perception.

Yue Jiang1,2,3, Lin Fan1, Xilong Sun3

  • 1Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|September 9, 2024
PubMed
Summary

This study introduces a novel multimodal tactile sensory system for robots, enhancing their ability to perceive and interact with objects. The system achieves high-precision recognition of object properties, improving robot manipulation capabilities.

Keywords:
MXeneinteraction state perceptionlotus nanofibermultimodal tactilemulti‐feature recognition

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Area of Science:

  • Robotics
  • Materials Science
  • Sensor Technology

Background:

  • Human object manipulation relies on rich tactile feedback.
  • Current robotic sensors lack the ability to capture complex interaction states.
  • This limits service robots' perception and analytical capabilities for intricate tasks.

Purpose of the Study:

  • To develop a multimodal tactile sensory system for robots.
  • To enable in situ simultaneous sensing during object approach, touch, and manipulation.
  • To enhance robots' human-like perception and analytical skills.

Main Methods:

  • Integration of a sensitive capacitive sensor (1.11E-2 pF mm⁻¹).
  • Incorporation of a fast-response triboelectric nanogenerator (30 ms).
  • Utilization of a 3D force-detecting pressure sensor array.
  • Application of transfer learning models to fuse multimodal data.

Main Results:

  • Achieved high-precision (up to 95%) recognition of multi-featured targets.
  • Successfully identified object properties like hardness and texture under varied conditions.
  • Demonstrated robust performance with random grasp forces and velocities.

Conclusions:

  • The developed sensory system significantly enhances robotic tactile perception.
  • It improves the intelligent recognition and behavior-planning of autonomous robots.
  • Enables complex task execution in undefined environments.