Network of Ictal Head Version in Mesial Temporal Lobe Epilepsy

Overview

Journal Brain Behav

Specialty Psychology

Date 2020 Aug 29

PMID 32857475

Citations 2

Authors

Yao Wang

Xiu Wang

Lin Sang

Chao Zhang

Bao-Tian Zhao

Jia-Jie Mo

Wen-Han Hu

Xiao-Qiu Shao

Feng Wang

Lin Ai

Jian-Guo Zhang

Kai Zhang

Affiliations

Soon will be listed here.

Abstract

Objective: Ictal head version is a common clinical manifestation of mesial temporal lobe epilepsy (MTLE). Nevertheless, the location of the symptomatogenic zone and the network involved in head version remains unclear. We attempt to explain these problems by analyzing interictal FDG-PET imaging and ictal stereo-electroencephalography (SEEG) recordings in MTLE patients.

Methods: Fifty-eight patients with MTLE were retrospectively analyzed. The patients were divided into version (+) and (-) groups according to the occurrence of versive head movements. The interictal PET data were compared among 18 healthy controls and the (+) and (-) groups. Furthermore, epileptogenicity index (EI) values and correlations with the onset time of head version were analyzed with SEEG.

Results: Intergroup comparisons showed that PET differences were observed in the middle temporal neocortex (MTN), posterior temporal neocortex (PTN), supramarginal gyrus (SMG), and inferior parietal lobe (IPL). The EI values in the SMG, MTN, and PTN were significantly higher in the version (+) group than in the version (-) group. A linear relationship was observed between head version onset and ipsilateral onset time in the SMG, orbitofrontal cortex (OFC), MTN, and PTN. A linear relationship was observed between EI, the difference between version onset and temporal neocortex onset, and the y-axis of the MNI coordinate.

Conclusion: The generation of ictal head version contributes to the propagation of ictal discharges to the intraparietal sulcus (IPS) area. The network of version originates from a mesial temporal lobe structure, passes through the MTN, PTN, and SMG, and likely ends at the IPS.

Citing Articles

Metabolic phenotyping of hand automatisms in mesial temporal lobe epilepsy.

Mo J, Wang Y, Zhang J, Cai L, Liu Q, Hu W EJNMMI Res. 2022; 12(1):32.

PMID: 35657491 PMC: 9166918. DOI: 10.1186/s13550-022-00902-1.

Network of ictal head version in mesial temporal lobe epilepsy.

Wang Y, Wang X, Sang L, Zhang C, Zhao B, Mo J Brain Behav. 2020; 10(11):e01820.

PMID: 32857475 PMC: 7667364. DOI: 10.1002/brb3.1820.

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