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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,...

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Related Experiment Video

Updated: Oct 22, 2025

Author Spotlight: Insights into Visual Cortex Research Through Wide-View fMRI Mapping

Author Spotlight: Insights into Visual Cortex Research Through Wide-View fMRI Mapping

Published on: December 8, 2023

Visual Field Reconstruction in Hemianopia Using fMRI Based Mapping Techniques.

Hinke N Halbertsma¹, Holly Bridge², Joana Carvalho³

¹Laboratory for Experimental Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands.

Frontiers in Human Neuroscience

|August 27, 2021

Summary

This summary is machine-generated.

Functional magnetic resonance imaging (fMRI) can detect residual visual processing in perimetrically blind regions of the visual field (VF) in hemianopic patients. This advanced fMRI technique, micro-probing (MP), offers a more sensitive approach for VF reconstruction and potential visual rehabilitation.

Keywords:

cortical blindness population receptive field residual vision visual cortex visual field (VF)

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Last Updated: Oct 22, 2025

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Published on: April 20, 2019

Area of Science:

Neuroscience
Neuroimaging
Vision Science

Background:

Stroke affecting the primary visual cortex causes unilateral visual field (VF) loss.
Behavioral tests like perimetry may not detect residual visual capabilities, known as "blindsight".

Purpose of the Study:

To investigate if functional magnetic resonance imaging (fMRI) can identify visual field representation in perimetrically blind areas.
To compare conventional population receptive field (pRF) analysis with micro-probing (MP) for VF reconstruction using fMRI.

Main Methods:

Thirteen hemianopia patients and nine controls underwent 3T MRI with visual stimulation.
Dynamic "wedge and ring" stimuli were used for mapping visual activity.
Two analysis methods, pRF and micro-probing (MP), were employed to reconstruct VF coverage maps.

Main Results:

Both fMRI methods detected neural activity in perimetrically blind VF regions.
Micro-probing (MP) identified more voxels with retained visual sensitivity in the lesioned hemisphere.
Both early and extrastriate visual areas contributed to retained sensitivity.

Conclusions:

fMRI can detect visual activity in perimetrically blind VF regions of hemianopic patients.
These regions may be targets for visual function rehabilitation.
MP is a more sensitive fMRI approach for VF reconstruction than conventional pRF analysis.