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Rhythmic rocking stereotypies in frontal lobe seizures: A quantified video study

Abstract : Objectives.-Rhythmic, stereotyped movements occur in some epileptic seizures. We aimed to document time-evolving frequencies of antero-posterior rocking occurring during prefrontal seizures, using a quantitative video analysis. Methods.-Six seizures from 3 patients with prefrontal epilepsy yet different sublobar local-izations were analyzed using a deep learning-based head-tracking method. Results.-Mean rocking frequency varied between patients and seizures (0.37-1.0 Hz). Coefficient of variation of frequency was low (≤ 12%). Discussion.-Regularity of body rocking movements suggests a mechanism involving intrinsic oscillatory generators. Since localization of seizure onset varied within prefrontal cortex across patients, altered dynamics converging on a ''final common pathway'' of seizure propagation involving cortico-subcortical circuits is hypothesized.
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Submitted on : Tuesday, June 23, 2020 - 1:53:17 PM
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Jen-Cheng Hou, Monique Thonnat, Raoul Huys, Fabrice Bartolomei, Aileen Mcgonigal. Rhythmic rocking stereotypies in frontal lobe seizures: A quantified video study. Neurophysiologie Clinique/Clinical Neurophysiology, Elsevier Masson, 2020, 50 (2), pp.75 - 80. ⟨10.1016/j.neucli.2020.02.003⟩. ⟨hal-02878968⟩

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