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Reducing State Anxiety Using Working Memory Maintenance
Published on: July 19, 2017
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Functional and morphological alterations associated with working memory dysfunction in patients with generalized
Chung-Man Moon1, Gwang-Woo Jeong1,2
11 Research Institute for Medical Imaging, Chonnam National University Medical School, Gwangju, Republic of Korea.
Acta Radiologica (Stockholm, Sweden : 1987)
|May 29, 2016
Summary
Generalized anxiety disorder (GAD) is linked to brain abnormalities affecting working memory. This study reveals combined functional and structural brain changes in GAD patients, impacting how they process neutral and anxiety-inducing information.
Area of Science:
- Neuroscience
- Psychiatry
- Medical Imaging
Background:
- Generalized anxiety disorder (GAD) is associated with altered brain function and structure.
- Working memory deficits are a known issue in GAD patients.
- Understanding the neural underpinnings is crucial for effective treatment.
Purpose of the Study:
- To investigate the neural mechanisms of working memory dysfunction in GAD.
- To examine combined functional and morphological brain abnormalities in GAD patients.
- To correlate brain alterations with working memory performance during distractor processing.
Main Methods:
- Utilized high-resolution T1-weighted MRI and functional MRI (fMRI) in GAD patients and matched healthy controls.
- Employed voxel-based morphometry (VBM) to assess structural differences.
- Analyzed differential brain activation patterns during working memory tasks with neutral and anxiety-inducing distractors.
Main Results:
- GAD patients exhibited reduced activity in several brain regions (e.g., fusiform gyrus, superior parietal gyrus) with neutral distractors.
- With anxiety-inducing distractors, GAD patients showed increased hippocampal activity and decreased activity in dorsolateral prefrontal cortex and other regions.
- Significant white matter volume reductions were observed in the DLPFC, anterior limb of the internal capsule, and midbrain in GAD patients.
Conclusions:
- This study provides novel evidence linking morphometric alterations with functional working memory deficits in GAD.
- Findings highlight the interplay between structural and functional brain changes in GAD.
- These insights aid in understanding the neural basis of working memory impairment in GAD.
Keywords:
Generalized anxiety disorder (GAD)functional magnetic resonance imaging (fMRI)voxel-based morphometry (VBM)working memoryMore Related Videos
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