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Related Concept Videos

Somatosensation01:33

Somatosensation

40.1K
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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Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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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.
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Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

8.4K
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...
8.4K
Sensory Modalities01:15

Sensory Modalities

2.2K
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
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Sensory Functions of the Skin01:16

Sensory Functions of the Skin

6.3K
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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Related Experiment Video

Updated: Oct 10, 2025

Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
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Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects

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A Model for Estimating Tactile Sensation by Machine Learning Based on Vibration Information Obtained while Touching

Fumiya Ito1, Kenjiro Takemura2

  • 1Graduate School of Science for Open and Environmental Systems, Keio University, Yokohama 223-8522, Japan.

Sensors (Basel, Switzerland)
|December 10, 2021
PubMed
Summary

This study introduces a novel tactile sensing technology using a silicone rubber sensor and deep autoencoders to quantify product texture. The developed model accurately estimates tactile sensations for several samples, offering a faster alternative to traditional sensory evaluation.

Keywords:
feature extractionmachine learningsensory evaluationtactile estimationtactile sensorvibration

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Area of Science:

  • Materials Science
  • Robotics
  • Human-Computer Interaction

Background:

  • Quantitative evaluation of tactile sensation is crucial for product development.
  • Traditional sensory evaluation is time-consuming and costly.
  • Tactile sensing technology offers a promising alternative.

Purpose of the Study:

  • To develop a tactile sensing technology for quantitative tactile sensation estimation.
  • To establish a model for estimating tactile sensation from sensor data.
  • To compare the accuracy of the developed model with sensory evaluation.

Main Methods:

  • Developed a two-layer silicone rubber tactile sensor with strain gauges.
  • Acquired vibration data as the sensor traced objects.
  • Extracted features using deep autoencoders, mimicking human neural processing.
  • Conducted sensory evaluation to gather tactile scores for samples.

Main Results:

  • Successfully extracted features from vibration data using deep autoencoders.
  • Developed a tactile sensation estimation model for seven different samples.
  • Demonstrated accurate estimation of tactile sensation for at least four out of seven samples.

Conclusions:

  • The developed tactile sensing technology can quantitatively estimate tactile sensations.
  • This approach provides a more efficient and cost-effective method than traditional sensory evaluation.
  • Further research can refine the model for improved accuracy across more samples.