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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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.
Association Areas of the Cortex01:21

Association Areas of the Cortex

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,...
Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
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...
Vision01:24

Vision

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.
Visual Agnosia01:12

Visual Agnosia

Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...

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Related Experiment Video

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Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
11:30

Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection

Published on: August 26, 2011

Shared representations for working memory and mental imagery in early visual cortex.

Anke Marit Albers1, Peter Kok, Ivan Toni

  • 1Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Kapittelweg 29, 6525 EN Nijmegen, the Netherlands.

Current Biology : CB
|July 23, 2013
PubMed
Summary
This summary is machine-generated.

The visual cortex processes visual working memory and mental imagery. Neural activity patterns during mental imagery resemble perception, suggesting the visual cortex acts as a dynamic blackboard for internal content generation.

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Related Experiment Videos

Last Updated: May 9, 2026

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Published on: August 26, 2011

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Visual Perception

Background:

  • Early visual areas (V1-V3) store information for visual working memory.
  • The role of early visual cortex in mental imagery (internally generating images) is debated.
  • Multivariate pattern analysis can detect content-specific neural representations.

Purpose of the Study:

  • To investigate if early visual areas (V1-V3) support mental imagery.
  • To analyze item-specific neural activity patterns during internally generated images.
  • To compare neural patterns of mental imagery with perception and working memory.

Main Methods:

  • Used multivariate pattern analysis (MVPA) on neural activity.
  • Examined neural data from early visual areas (V1-V3).
  • Decoded stimulus identity during working memory and mental imagery tasks.

Main Results:

  • Successfully decoded stimulus identity from V1-V3 activity during both working memory and mental imagery.
  • Neural activity patterns during mental imagery were similar to those from visual stimulation.
  • Confirmed content-specific representations in early visual cortex for internally generated content.

Conclusions:

  • Early visual cortex is involved in mental imagery, not just visual working memory.
  • Mental imagery shares neural mechanisms with visual perception.
  • The visual cortex functions as a dynamic 'blackboard' for both external and internal visual information processing.