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Related Concept Videos

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.
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"...
Visual System01:26

Visual System

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...
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...
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 retinaβ€”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.
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...

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Related Experiment Video

Updated: Jun 13, 2026

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation
07:11

Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation

Published on: December 8, 2023

Neural synchrony between prefrontal and visual cortex supports visual working memory.

Mrugank Dake, Sangita Dandekar, Clayton E Curtis

    Biorxiv : the Preprint Server for Biology
    |June 12, 2026
    PubMed
    Summary
    This summary is machine-generated.

    Prefrontal cortex influences visual working memory by synchronizing neural activity. This synchronization in beta-band oscillations helps maintain and recall visual information, explaining brain communication during memory tasks.

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    Related Experiment Videos

    Last Updated: Jun 13, 2026

    Functional Magnetic Resonance Imaging (fMRI) of the Visual Cortex with Wide-View Retinotopic Stimulation
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    Published on: December 8, 2023

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    Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
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    Area of Science:

    • Cognitive Neuroscience
    • Neuroimaging
    • Human Brain Function

    Background:

    • Working memory involves distributed neural mechanisms across the brain.
    • Prefrontal cortex (PFC) activity persists during memory maintenance.
    • Visual working memory content is decodable from visual cortex activity patterns.

    Purpose of the Study:

    • To investigate how PFC influences visual working memory representations in the visual cortex.
    • To test hypotheses on neural synchronization between PFC and visual cortex during memory maintenance.
    • To provide direct evidence for PFC's role in coordinating working memory.

    Main Methods:

    • Used magnetoencephalography (MEG) for high temporal resolution.
    • Employed a visuospatial working memory task in human participants (both sexes).
    • Analyzed beta-band (𝛽-band) activity power, topography, and synchronization between brain regions.

    Main Results:

    • Sustained 𝛽-band power during memory maintenance.
    • Visual cortex 𝛽-band topography predicted memorized locations and memory errors.
    • Synchronized 𝛽-band neural activity between PFC and visual cortex during memory recall.

    Conclusions:

    • Findings support models of widely distributed working memories.
    • Demonstrate PFC-visual cortex communication via 𝛽-band synchronization.
    • Explain how higher-order areas coordinate sensory cortices for memory storage.