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Related Concept Videos

Somatosensation01:33

Somatosensation

36.5K
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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Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

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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...
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Perception01:28

Perception

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Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
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Auditory Perception01:17

Auditory Perception

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The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the...
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Sensory Functions of the Skin01:16

Sensory Functions of the Skin

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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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Tactile and Chemical Senses01:27

Tactile and Chemical Senses

286
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.
286

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Characterization of the Sense of Agency over the Actions of Neural-machine Interface-operated Prostheses
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Haptic Perception and Its Relation to Action.

Roberta L Klatzky1

  • 1Department of Psychology, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA;

Annual Review of Psychology
|September 25, 2024
PubMed
Summary
This summary is machine-generated.

Haptic perception, using touch signals, helps us understand objects and surfaces. Research integrates behavioral science, neuroscience, and computational models to explain how touch and action interact.

Keywords:
computational modelprostheticssensoryskin

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Area of Science:

  • Neuroscience
  • Behavioral Science
  • Computational Modeling

Background:

  • Haptic perception relies on touch receptors for object detection and mental representation.
  • Understanding haptic perception is crucial for fields like neuroscience and behavioral science.
  • Neural circuitry transmits external contact information to the brain through abstracted representations.

Purpose of the Study:

  • To advance the understanding of haptic perception through interdisciplinary research.
  • To explore the interplay between sensory input and motor control in haptic perception.
  • To investigate the computational basis of haptic object and surface detection.

Main Methods:

  • Utilizing computational models to predict neural firing rates based on skin mechanical interactions.
  • Analyzing behavioral phenomena and corresponding neural processes.
  • Examining how surface and object features like softness and curvature are encoded.

Main Results:

  • Computational models effectively predict peripheral neural responses to mechanical stimuli.
  • Behavioral studies demonstrate a reciprocal relationship where perception guides action and action shapes experience.
  • Neural processes underlying the encoding of tactile features like softness and curvature were identified.

Conclusions:

  • Haptic perception is a complex process involving intricate neural circuitry and sensory-motor integration.
  • The integration of touch sensation and motor control is key to enhancing capabilities, such as with prosthetics.
  • Further technological development is needed to fully replicate virtual haptic experiences.