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Related Concept Videos

Somatosensory, Motor, and Association Cortex01:24

Somatosensory, Motor, and Association Cortex

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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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Somatosensation01:33

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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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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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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:
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Vision01:24

Vision

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Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
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Updated: Nov 29, 2025

A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity
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What Does Dorsal Cortex Contribute to Perception?

Erez Freud1, Marlene Behrmann2, Jacqueline C Snow3

  • 1Department of Psychology and the Centre for Vision Research, York University.

Open Mind : Discoveries in Cognitive Science
|November 23, 2020
PubMed
Summary
This summary is machine-generated.

The dorsal visual pathway, traditionally linked to action, also aids object perception by processing spatial attributes. This suggests a broader role for the dorsal pathway in understanding potential interactions with objects.

Keywords:
affordanceobject recognitiontwo visual pathwaysvision-for-actionvision-for-perception

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Visual Perception

Background:

  • The "Two Visual Pathways" hypothesis posits separate ventral (object recognition) and dorsal (action control) streams.
  • Emerging evidence challenges this strict segregation, suggesting dorsal pathway involvement in perception.

Purpose of the Study:

  • To investigate the unique contribution of the dorsal visual pathway to object perception.
  • To explore whether the dorsal pathway processes attributes relevant to potential actions.

Main Methods:

  • Review of existing evidence and theoretical considerations on dorsal pathway function.
  • Analysis of how different stimuli (naturalistic vs. artificial) might engage dorsal cortex.

Main Results:

  • The dorsal pathway is automatically recruited during perception, independent of motor responses.
  • It uniquely processes visuospatial attributes not redundant with ventral representations.
  • These attributes may inform the perception of potential actions.

Conclusions:

  • The dorsal pathway plays a crucial, often overlooked, role in object perception.
  • Its function may involve processing action-relevant visual information.
  • Stimulus type (e.g., naturalistic objects) can influence dorsal cortex engagement.