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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.
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...
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.
Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
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...
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

Updated: May 8, 2026

Using a Classroom-Based Deese Roediger McDermott Paradigm to Assess the Effects of Imagery on False Memories
08:53

Using a Classroom-Based Deese Roediger McDermott Paradigm to Assess the Effects of Imagery on False Memories

Published on: November 14, 2018

Imagery and visual working memory: one and the same?

Frank Tong1

  • 1Psychology Department and Vanderbilt Vision Research Center, Vanderbilt University, Nashville, TN 37240, USA.

Trends in Cognitive Sciences
|August 21, 2013
PubMed
Summary
This summary is machine-generated.

Visual imagery and visual working memory share common mechanisms, utilizing shared internal representations within early visual brain areas. This finding suggests an integrated system for visual information processing.

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Area of Science:

  • Cognitive Neuroscience
  • Visual Perception
  • Brain Imaging

Background:

  • Visual imagery and visual working memory involve active mental manipulation of visual information.
  • The neural underpinnings and shared mechanisms between these two cognitive functions remain largely unexplored.

Purpose of the Study:

  • To investigate whether visual imagery and visual working memory depend on common neural mechanisms.
  • To identify the locus of shared representations, if any, between these processes.

Main Methods:

  • Utilized functional magnetic resonance imaging (fMRI) to measure brain activity.
  • Designed tasks to elicit both visual imagery and visual working memory.
  • Analyzed brain activation patterns in early visual processing areas.

Main Results:

  • Found evidence supporting common internal representations for both visual imagery and visual working memory.
  • Identified overlapping neural activity in early visual cortex, suggesting shared mechanisms.
  • The results indicate that these distinct cognitive functions engage similar neural substrates.

Conclusions:

  • Visual imagery and visual working memory are supported by common neural mechanisms.
  • Early visual areas play a crucial role in maintaining and manipulating visual information for both functions.
  • This suggests a unified system for visual information processing in the brain.