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Updated: May 24, 2026

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping

Translational Brain Mapping at the University of Rochester Medical Center: Preserving the Mind Through Personalized Brain Mapping

Published on: August 12, 2019

An integrative architecture for general intelligence and executive function revealed by lesion mapping.

Aron K Barbey¹, Roberto Colom, Jeffrey Solomon

¹Decision Neuroscience Laboratory, University of Illinois, Champaign, IL 61820, USA. Barbey@Illinois.edu

Brain : a Journal of Neurology

|March 8, 2012

Summary

This study reveals that general intelligence (g) and executive functions rely on a shared fronto-parietal network. Damage to this network, particularly in left-lateralized frontal and parietal areas, impairs cognitive abilities.

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Published on: May 7, 2014

Area of Science:

Cognitive Neuroscience
Neuropsychology

Background:

The prefrontal cortex's role in executive control is known, but the broader networks supporting general intelligence are less understood.
Identifying the neural basis of general intelligence (g) and executive functions is crucial for understanding high-level cognition.

Purpose of the Study:

To investigate the neural substrates of the general factor of intelligence (g) and executive function.
To map brain regions associated with cognitive deficits in patients with focal brain damage.

Main Methods:

Utilized voxel-based lesion-symptom mapping in 182 patients with focal brain damage.
Employed the Wechsler Adult Intelligence Scale and Delis-Kaplan Executive Function System to assess cognitive abilities.

Main Results:

Impaired performance on intelligence and executive function measures correlated with damage to a distributed network of left-lateralized brain areas.
Key affected regions included frontal and parietal cortex, and associated white matter tracts.

Conclusions:

General intelligence and executive functions depend on a shared fronto-parietal network.
This network integrates and controls cognitive representations, crucial for high-level cognition.
Findings inform the application of cognitive assessment tools in clinical and research settings.