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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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Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study

Anteromesial Temporal Lobectomy for Medically Intractable Temporal Lobe Epilepsy: An Operative Study

Published on: August 15, 2025

Relationship between cortical resection and visual function after occipital lobe epilepsy surgery.

Won Heo^1,2, June Sic Kim³, Chun Kee Chung^1,3

¹Departments of1Neurosurgery and.

Journal of Neurosurgery

|October 28, 2017

Summary

Occipital lobe epilepsy (OLE) surgery offers good seizure control and visual function for many patients. Resection of specific lateral occipital areas can impact vision and social functioning, highlighting the need for careful surgical planning.

Keywords:

AED = antiepileptic drug CD = cortical dysplasia EEG = electroencephalography IPS = intraparietal sulcus LO = lateral occipital area NEI-VFQ-25 = National Eye Institute Visual Functioning Questionnaire 25 OLE = occipital lobe epilepsy PPC = posterior parietal cortex ROI = region of interest clinical outcome occipital lobe epilepsy resection frequency map visual field visual function

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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients

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Published on: December 18, 2016

Area of Science:

Neurosurgery
Epileptology
Ophthalmology

Background:

Occipital lobe epilepsy (OLE) presents unique challenges for surgical management.
Understanding the long-term clinical and visual outcomes after OLE surgery is crucial for patient care.

Purpose of the Study:

To investigate long-term clinical and visual outcomes following occipital lobe epilepsy surgery.
To analyze the relationship between the extent of visual cortex resection and postoperative visual function.

Main Methods:

Retrospective review of clinical, radiological, and histopathological data from 42 OLE patients.
Assessment of seizure outcomes using the Engel classification.
Evaluation of visual function with the National Eye Institute Visual Functioning Questionnaire 25.

Main Results:

A favorable seizure control rate (Engel Class I or II) was achieved in 78.6% of patients after a mean follow-up of 102.2 months.
57.6% of patients demonstrated good visual function (normal vision or quadrantanopia).
Resection of lateral occipital areas 1 and 2 correlated with visual deficits; intraparietal sulcus resection impacted social functioning.

Conclusions:

OLE surgery provides significant seizure control and good visual outcomes for a majority of patients.
The extent of lateral occipital cortical resection directly influences visual function, even with visual field preservation.
Surgical planning must consider the potential impact on visual and social functioning.