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. 2020 Aug 11;11(4):643–645. doi: 10.1055/s-0040-1714329

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Association for Helping Neurosurgical Sick People. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. https://creativecommons.org/licenses/by-nc-nd/4.0/.

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 1 — ( A ) Electroencephalography showing slow background rhythms at 7 Hz with well-preserved anteroposterior gradient (Dec ’18) before start of increased frequency of seizures. ( B ) Sleep augmented generalized spike and wave discharges with anterior leads showing rhythmic slow 1–2 Hz delta activity. ( C ) Typical tonic seizure arising in sleep (Dec ’18).