Early ictal recruitment of midline thalamus in mesial temporal lobe epilepsy

Andrew Romeo, Alexandra T. Issa Roach, Emilia Toth, Ganne Chaitanya, Adeel Ilyas, Kristen O. Riley, Sandipan Pati

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The causal role of midline thalamus in the initiation and early organization of mesial temporal lobe seizures is studied. Three patients undergoing stereoelectroencephalography were enrolled for the placement of an additional depth electrode targeting the midline thalamus. The midline thalamus was recruited in all three patients at varying points of seizure initiation (0–13 sec) and propagation (9–60 sec). Stimulation of either thalamus or hippocampus induced similar habitual seizures. Seizure-induced in the hippocampus rapidly recruited the thalamus. Evoked potentials demonstrated stronger connectivity from the hippocampus to the thalamus than in the opposite direction. The midline thalamus can be within the seizure initiation and symptomatogenic circuits.

Original languageEnglish (US)
Pages (from-to)1552-1558
Number of pages7
JournalAnnals of Clinical and Translational Neurology
Volume6
Issue number8
DOIs
StatePublished - 2019
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2019 The Authors. Annals of Clinical and Translational Neurology published by Wiley Periodicals, Inc on behalf of American Neurological Association.

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