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Related Concept Videos

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...
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.
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
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.
Perception01:28

Perception

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...
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...

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Related Experiment Video

Updated: Jun 28, 2026

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
09:13

Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder

Published on: April 22, 2015

Multisensory integration: central processing modifies peripheral systems.

J E Lugo1, R Doti, Walter Wittich

  • 1Visual Psychophysics and Perception Laboratory, School of Optometry, University of Montreal, Montreal, Quebec, Canada.

Psychological Science
|November 13, 2008
PubMed
Summary
This summary is machine-generated.

Multisensory integration involves more than just the brain. New research shows that sensory stimuli, like sound or sight, can enhance tactile signals in the peripheral nervous system.

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Cross-Modal Multivariate Pattern Analysis

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Last Updated: Jun 28, 2026

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09:13

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08:13

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13:51

Cross-Modal Multivariate Pattern Analysis

Published on: November 9, 2011

Area of Science:

  • Neuroscience
  • Human sensory perception
  • Peripheral nervous system function

Background:

  • Current theories of multisensory integration primarily focus on central brain processes.
  • The potential role of the peripheral nervous system in modulating sensory input during integration is largely unexplored.

Purpose of the Study:

  • To investigate the involvement of the peripheral nervous system in human multisensory integration.
  • To demonstrate novel tactile-auditory and tactile-visual interactions.
  • To propose a theoretical framework for peripheral modulation during sensory integration.

Main Methods:

  • Presentation of precisely synchronous auditory or visual stimuli with excitatory tactile signals to the lower leg.
  • Measurement of peripheral neural responses to tactile stimulation under different sensory conditions.

Main Results:

  • Facilitating auditory or visual stimuli, when synchronous with tactile signals, significantly increased the peripheral representation of the tactile signal.
  • Evidence for direct modulation of peripheral activity by the brain during multisensory processing.

Conclusions:

  • Human multisensory integration is not solely a brain phenomenon; it involves peripheral nervous system modulation.
  • The brain actively modifies peripheral sensory signals during integration, extending beyond simple information binding.
  • This study introduces a new dimension to understanding sensory processing and neural interactions.