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Related Concept Videos

Somatosensation01:33

Somatosensation

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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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Somatosensory, Motor, and Association Cortex01:24

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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...
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Motor and Sensory Areas of the Cortex01:14

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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
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The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
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Association Areas of the Cortex01:21

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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Neural Circuits01:25

Neural Circuits

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Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
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Sensory Perception: Organization of the Somatosensory System01:11

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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:
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Related Experiment Video

Updated: Sep 18, 2025

Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS
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Tactile Semiautomatic Passive-Finger Angle Stimulator TSPAS

Published on: July 30, 2020

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Brain network for small-scale features in active touch.

Saeed Babadi1, Roger Gassert2, Vincent Hayward3

  • 1Department of Kinesiology and Physical Education, McGill University, Montreal, QC H2W 1S4, Canada.

Neuroimage. Reports
|June 26, 2025
PubMed
Summary
This summary is machine-generated.

This study reveals how the brain networks connect during active touch to improve hand dexterity. Functional connectivity analysis identified a parietal-cerebellar-frontal network crucial for detecting fine tactile details.

Keywords:
Functional connectivityPerceptual learningResting-state networkSomatosensoryfMRI

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Last Updated: Sep 18, 2025

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Area of Science:

  • Neuroscience
  • Sensory-motor systems
  • Cognitive neuroscience

Background:

  • Active tactile exploration is vital for fine motor control and object manipulation.
  • Understanding the neural basis of tactile perception and its link to motor planning is crucial for addressing sensory-motor deficits.

Purpose of the Study:

  • To investigate the functional brain connectivity underlying the active detection of small-scale tactile features.
  • To identify the neural network involved in mapping tactile inputs to motor preparation and planning regions during active touch.

Main Methods:

  • Utilized a resting-state functional magnetic resonance imaging (fMRI) paradigm.
  • Participants actively located tactile features using a computer-controlled tactile display.
  • Behavioral performance was correlated with changes in functional connectivity to identify neural networks.

Main Results:

  • Identified a parietal-cerebellar-frontal network connecting cortical and subcortical regions.
  • Observed that functional connectivity within this network changed with behavioral performance.
  • Highlighted the role of perceptual learning and attention in tactile feature detection.

Conclusions:

  • The identified brain network supports the integration of tactile information with motor planning for dexterous hand movements.
  • This network is essential for processing perceptual, cognitive, and attentional demands in fine tactile tasks.
  • Findings contribute to understanding neural mechanisms of sensory-motor integration and tactile perception.