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Updated: Dec 25, 2025

A Method for Manipulating Blood Glucose and Measuring Resulting Changes in Cognitive Accessibility of Target Stimuli
Published on: August 12, 2016
Resting State Glucose Utilization and Adult Reading Test Performance.
Younghwa Lee1, Dahyun Yi2, Eun Hyun Seo3
1Interdisciplinary Program of Cognitive Science, Seoul National University, Seoul, South Korea.
Adult reading tests (ART) reveal brain glucose metabolism in frontal and somatosensory areas. This study links ART performance to cognitive reserve and premorbid intelligence in older adults.
Area of Science:
- Neuroscience
- Cognitive Neurology
- Medical Imaging
Background:
- Adult reading tests (ART) assess premorbid cognitive abilities and cognitive reserve.
- Neural underpinnings of ART performance and their relation to cognitive reserve remain unclear.
- Investigating the neural basis of ART is crucial for understanding cognitive reserve.
Purpose of the Study:
- Identify functional neural correlates of ART performance in cognitively normal adults.
- Examine if ART neural substrates align with regions associated with premorbid intelligence and cognitive reserve.
- Utilize 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) for brain glucose metabolism assessment.
Main Methods:
- Employed 18F-fluorodeoxyglucose (FDG) PET imaging in middle- and old-aged cognitively normal adults.
- Conducted voxel-wise analyses to correlate glucose metabolism with ART performance.
- Performed secondary analysis restricted to amyloid-β (Aβ)-negative individuals.
Main Results:
- Positive correlations found between glucose metabolism and ART performance in frontal and primary somatosensory regions (lateral frontal cortex, anterior cingulate cortex, postcentral gyrus).
- Broader correlations observed in frontal and somatosensory regions for Aβ-negative individuals.
- First neuroimaging study demonstrating direct links between resting-state glucose utilization and ART performance.
Conclusions:
- ART performance is associated with glucose metabolism in brain regions critical for cognitive functions.
- Findings support ART as a predictor of premorbid general intelligence and cognitive reserve.
- Neural correlates of ART performance align with known regions for intelligence and cognitive reserve.
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