What does this research mean for the field?

Patients with temporal lobe epilepsy and active focal to bilateral tonic-clonic seizures exhibit significantly reduced functional connectivity between the posterior vermis and lateral cerebellar lobules, indicating the cerebellum's regulatory role in seizure susceptibility. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

What question did this study set out to answer?

To identify alterations in cerebellar functional connectivity associated with susceptibility to focal to bilateral tonic–clonic seizures in patients with temporal lobe epilepsy.

September 7, 2026Epilepsia OpenOpen Access

Disrupted cerebellar networks in uncontrolled focal to bilateral tonic–clonic seizures

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Authors

TPThienan John Phamnguyen EKElaine Kuan PDPuneet Dheer

Discussion

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Overview

Prospective study reveals impaired intracerebellar connectivity in temporal lobe epilepsy with active tonic-clonic seizures, highlighting a cerebellar role in modulating seizure spread.

Key Points

To identify alterations in cerebellar functional connectivity associated with susceptibility to focal to bilateral tonic–clonic seizures in patients with temporal lobe epilepsy.
Prospectively evaluated 30 patients with unilateral temporal lobe epilepsy—stratified into active (n=15; ≥1 seizure in the past year) and inactive (n=15) groups—and 20 demographically matched controls.
Acquired resting-state functional MRI and high-resolution T1-weighted imaging, analyzing functional connectivity across cerebellar and subcortical regions using the CONN toolbox.
Assessed between-group differences using Kruskal–Wallis tests followed by post hoc pairwise analyses.
Functional connectivity between the posterior vermis and bilateral lateral cerebellar lobules (Crus I/II) was significantly lower in patients with active seizures compared to healthy controls.
Patients with active seizures showed significantly decreased connectivity between the posterior vermis and contralateral Crus I/II compared to the inactive seizure group.
Both epilepsy cohorts demonstrated reduced connectivity between the posterior vermis and thalamic nuclei (mediodorsal and pulvinar), and between the flocculonodular lobe and mesial temporal structures (hippocampus, parahippocampus, and amygdala), relative to controls.

Cite This Study

Phamnguyen et al. (2026) studied this question.

synapsesocial.com/papers/6a9e85b3c3034f961570df7a https://doi.org/10.1002/epi4.70315

View Full Paper

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September 7, 2026Epilepsia OpenOpen Access

Disrupted cerebellar networks in uncontrolled focal to bilateral tonic–clonic seizures

View Full Paper

Ask AI

Bookmark

Authors

TPThienan John Phamnguyen EKElaine Kuan PDPuneet Dheer

Discussion

Member takes

Overview

Prospective study reveals impaired intracerebellar connectivity in temporal lobe epilepsy with active tonic-clonic seizures, highlighting a cerebellar role in modulating seizure spread.

Key Points

To identify alterations in cerebellar functional connectivity associated with susceptibility to focal to bilateral tonic–clonic seizures in patients with temporal lobe epilepsy.
Prospectively evaluated 30 patients with unilateral temporal lobe epilepsy—stratified into active (n=15; ≥1 seizure in the past year) and inactive (n=15) groups—and 20 demographically matched controls.
Acquired resting-state functional MRI and high-resolution T1-weighted imaging, analyzing functional connectivity across cerebellar and subcortical regions using the CONN toolbox.
Assessed between-group differences using Kruskal–Wallis tests followed by post hoc pairwise analyses.
Functional connectivity between the posterior vermis and bilateral lateral cerebellar lobules (Crus I/II) was significantly lower in patients with active seizures compared to healthy controls.
Patients with active seizures showed significantly decreased connectivity between the posterior vermis and contralateral Crus I/II compared to the inactive seizure group.
Both epilepsy cohorts demonstrated reduced connectivity between the posterior vermis and thalamic nuclei (mediodorsal and pulvinar), and between the flocculonodular lobe and mesial temporal structures (hippocampus, parahippocampus, and amygdala), relative to controls.

Cite This Study

Phamnguyen et al. (2026) studied this question.

synapsesocial.com/papers/6a9e85b3c3034f961570df7a https://doi.org/10.1002/epi4.70315

View Full Paper

Ask AI

Bookmark