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Related Concept Videos

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...
Mnemonic Devices01:23

Mnemonic Devices

Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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...
Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

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Related Experiment Video

Updated: Jun 6, 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

A link between visual disambiguation and visual memory.

Jay Hegdé1, Daniel Kersten

  • 1Brain and Behavior Discovery Institute, Department of Ophthalmology, and Vision Discovery Institute, Medical College of Georgia, Augusta, Georgia 30912, USA. jay@hegde.us

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|November 12, 2010
PubMed
Summary
This summary is machine-generated.

The brain uses distinct regions for remembering visual details and interpreting ambiguous images. This research reveals how memory and perception interact to help us understand the visual world.

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Published on: August 15, 2010

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Visual Perception

Background:

  • Visual object recognition relies on disambiguating retinal image information.
  • Theories suggest integrating sensory input with prior knowledge is crucial for visual disambiguation.
  • Neural mechanisms underlying this process remain largely unknown.

Purpose of the Study:

  • To investigate the neural mechanisms of visual disambiguation.
  • To differentiate brain regions involved in storing disambiguating information versus interpreting ambiguous images.
  • To explore the functional interaction between memory and perception in visual processing.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to study human subjects.
  • Subjects viewed ambiguous Mooney images and unambiguous color images.
  • Brain activity and functional connectivity were analyzed during memory recall and image interpretation tasks.

Main Results:

  • Medial parietal cortex activity correlated with memory for color images, not Mooney image disambiguation.
  • Superior temporal sulcus activity correlated with Mooney image perception, not color image memory.
  • Increased functional connectivity was observed between these regions when disambiguated percepts were stronger.

Conclusions:

  • Evidence suggests functional specialization in the brain for memory storage versus perceptual interpretation.
  • A network involving medial parietal cortex and superior temporal sulcus plays a role in visual disambiguation.
  • Interactions between memory and perception are vital for resolving visual ambiguity and understanding the visual world.