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Updated: Jul 9, 2026

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Creating Objects and Object Categories for Studying Perception and Perceptual Learning
Published on: November 2, 2012
Where vision meets memory: prefrontal-posterior networks for visual object constancy during categorization and
Haline E Schendan1, Chantal E Stern
1Department of Psychology, Tufts University, 490 Boston Avenue, Medford, MA 02155, USA. Haline_E.Schendan@tufts.edu
Cerebral Cortex (New York, N.Y. : 1991)
|November 24, 2007
Summary
Recognizing objects from unusual angles requires more brain processing, involving visual pathways and prefrontal cortex for cognitive control and mental rotation. This study used fMRI to explore how the brain handles diverse object views.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Visual Perception
Background:
- Object recognition theories suggest unusual views recruit prefrontal and parietal processes for cognitive control and mental rotation.
- Understanding visual object constancy is crucial for explaining how we interact with objects in varied orientations.
Purpose of the Study:
- To investigate the neural mechanisms underlying object recognition from unusual versus canonical views using functional magnetic resonance imaging (fMRI).
- To test the role of prefrontal and parietal networks in visual object constancy and model verification.
Main Methods:
- Participants categorized and recognized familiar objects presented from both canonical and unusual viewpoints.
- fMRI was employed to measure brain activity during these visual recognition tasks.
Main Results:
- Unusual views engaged ventral and dorsal visual pathways, and prefrontal cortex, highlighting their roles in visual object constancy.
- Specific regions, including object-sensitive areas and those involved in mental rotation, were activated by unusual views, supporting model verification processes.
- A "place" area in the collateral-lingual sulci was involved in mental rotation and processing unusual views for successful recognition.
Conclusions:
- Distinct prefrontal-posterior brain networks are essential for enabling robust object recognition and interaction across diverse situations.
- The findings integrate vision and memory theories, providing a framework for understanding how the brain achieves visual object constancy.
Related Concept Videos
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.
Perceptual Constancy
Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
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...
Once through the pupil, the light passes through the lens, a...
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,...
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,...
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"...
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.

