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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

4.0K
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.
Motor Areas
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....
4.0K
Association Areas of the Cortex01:21

Association Areas of the Cortex

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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:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
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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...
566
Visual System01:26

Visual System

623
Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
623
Vision01:24

Vision

53.6K
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.
53.6K
Somatosensation01:33

Somatosensation

36.7K
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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Related Experiment Video

Updated: Jul 24, 2025

Topographical Estimation of Visual Population Receptive Fields by fMRI
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Topographical Estimation of Visual Population Receptive Fields by fMRI

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Cortical Surface Area Relates to Distinct Computational Properties in Human Visual Perception.

Scott O Murray1, Tamar Kolodny1, Sara Jane Webb2,3

  • 1Department of Psychology, University of Washington, Seattle WA USA 98195.

Biorxiv : the Preprint Server for Biology
|July 3, 2023
PubMed
Summary
This summary is machine-generated.

Cortical surface area (SA) differences in the brain link to distinct visual perception behaviors. This structural feature influences computational properties in neural circuits, impacting human behavior.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Neuroscience

Background:

  • Understanding the link between brain structure and function is key to explaining human behavior.
  • The influence of cortical structural features on neural circuit computation is not well understood.

Approach:

  • Combined psychophysical, neuroimaging, and computational modeling.
  • Investigated the relationship between cortical surface area (SA) and visual perception.
  • Analyzed SA differences in parietal and frontal cortices.

Key Points:

  • Cortical surface area (SA) is linked to specific computational properties in human visual perception.
  • Differences in SA in parietal and frontal cortices correlate with distinct motion perception behaviors.
  • Behavioral variations are explained by parameters of a divisive normalization model.

Conclusions:

  • Cortical structure, specifically SA, uniquely contributes to the spatial organization of cortical circuitry.
  • Findings link cortical structure to distinct computational properties, impacting human behavior.
  • Provides a framework for understanding how cortical architecture influences human behavior.