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Network Analysis of the Default Mode Network Using Functional Connectivity MRI in Temporal Lobe Epilepsy

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Disrupted default mode network connectivity in migraine without aura.

Alessandro Tessitore, Antonio Russo, Alfonso Giordano

The Journal of Headache and Pain

|November 12, 2013

Summary

This summary is machine-generated.

Migraine patients without aura exhibit altered default mode network (DMN) connectivity, particularly in prefrontal and temporal regions. This disruption, identified via resting-state fMRI, was not linked to structural differences or clinical features.

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Area of Science:

Neuroimaging
Functional Connectivity
Pain Research

Background:

Resting-state functional magnetic resonance imaging (RS-fMRI) shows altered default mode network (DMN) connectivity in pain conditions like migraine.
The clinical significance of these resting-state brain functional connectivity changes in migraine remains unclear.

Purpose of the Study:

To investigate DMN functional connectivity in migraine without aura (MwoA) patients during interictal periods.
To explore the clinical significance of DMN functional connectivity alterations in MwoA.

Main Methods:

Compared resting-state functional connectivity of the DMN in 20 MwoA patients and 20 healthy controls (HC) using Brain Voyager QX.
Utilized voxel-based morphometry to examine structural correlates of DMN connectivity differences.
Conducted secondary analyses on associations between DMN connectivity and clinical/neuropsychological features.

Main Results:

MwoA patients displayed reduced DMN connectivity in prefrontal and temporal regions compared to HC.
Observed functional connectivity abnormalities were not associated with structural differences.
No significant associations were found between DMN functional connectivity and clinical or neuropsychological features of migraineurs.

Conclusions:

The study confirms disrupted DMN connectivity in MwoA patients.
Hypothesizes that DMN dysfunction may underlie behavioral processes, such as maladaptive stress responses, common in migraine.