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Association Areas of the Cortex

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,...

Motor and Sensory Areas of the Cortex

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.

Vision

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 Agnosia

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 System

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...

Prosopagnosia

Prosopagnosia

Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...

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Related Experiment Video

Updated: Jun 14, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

[Visual perception deficits of cortical origin].

Urszula Stolarska¹, Anna Zajac, Barbara Skowronek-Bała

¹Klinika Neurologii Dzieciecej, Uniwersytet Jagielloński Collegium Medicum, Kraków. neupedkr@cm-uj.krakow.pl

Przeglad Lekarski

|March 20, 2010

Summary

This review explores visual perception disorders stemming from brain irregularities, focusing on cortical malfunction. It details conditions like vision loss, agnosias, and hallucinations, offering insights into brain mechanisms.

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Area of Science:

Neuroscience
Cognitive Science
Ophthalmology

Context:

Visual perception distortions arise from structural or functional brain irregularities.
Cerebral vision disorders, though rare in clinical practice, are crucial for understanding cognitive mechanisms.
Diseases affecting lower brain structures can cause secondary cortical dysfunction.

Purpose:

To review visual perception distortions originating from brain cortex malfunction.
To include disorders affecting lower brain structures that lead to secondary cortical dysfunction.
To present examples of cerebral vision disorders for cognitive scientists.

Summary:

The literature review focuses on visual perception distortions caused by brain cortex malfunction.
It covers vision loss, agnosias, and hallucinations, including specific conditions like cortical blindness, prosopagnosia, and Anton's syndrome.
The paper highlights the interdisciplinary nature of studying these disorders.

Impact:

Provides a comprehensive overview of cerebral vision disorders.
Enhances understanding of the complex mechanisms underlying visual perception.
Facilitates interdisciplinary collaboration in neuroscience research.