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Related Concept Videos

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...
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.
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...
Characteristics of Dry Friction01:21

Characteristics of Dry Friction

Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Dry Friction01:30

Dry Friction

Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible.
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
Sensory Modalities01:15

Sensory Modalities

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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Design, Fabrication, and Administration of the Hand Active Sensation Test (HASTe)
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Published on: September 8, 2015

Haptic perception of wetness.

Wouter M Bergmann Tiest1, N Dolfine Kosters, Astrid M L Kappers

  • 1Helmholtz Institute, Utrecht University, 3584 CH Utrecht, The Netherlands. W.M.BergmannTiest@uu.nl

Acta Psychologica
|September 12, 2012
PubMed
Summary
This summary is machine-generated.

This study reveals that people can better distinguish fabric wetness using dynamic touch, which incorporates mechanical cues. Wetness perception is independent of material type, highlighting the importance of tactile sensing.

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Published on: February 21, 2020

Area of Science:

  • Haptics and Perception
  • Textile Science
  • Human-Computer Interaction

Background:

  • Understanding human perception of textile wetness is limited.
  • Daily interactions involve fabrics with varying moisture levels.

Purpose of the Study:

  • To investigate the haptic discrimination of fabric wetness.
  • To determine the role of thermal and mechanical cues in wetness perception.
  • To assess if wetness perception is material-dependent.

Main Methods:

  • Experiment involving six conditions with three fabric types (cotton wool, sponge viscose, thin viscose).
  • Two touching methods: static (thermal cues only) and dynamic (thermal and mechanical cues).
  • Analysis of Weber fractions to quantify discrimination performance.

Main Results:

  • Dynamic touching yielded average Weber fractions around 0.3.
  • Static touching resulted in Weber fractions ranging from 0.34 to 0.63.
  • No significant difference in Weber fractions across materials, indicating material independence.

Conclusions:

  • Mechanical cues significantly enhance the ability to discriminate fabric wetness.
  • Wetness is perceived as a distinct sensory attribute, separate from material properties.
  • This research advances our understanding of tactile perception in everyday contexts.