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. 2021 Jun 24;10(13):2776. doi: 10.3390/jcm10132776

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Prolonged electroencephalogram recordings including nocturnal sleep in patients with DSAD: (a) polymorphic generalized triphasic waves with maximum frontal amplitude in N1 phase of sleep; (b) generalized polyspike-slow waves in N3 phase of sleep; (c) paroxysmal activity in the form of sharp waves with maximum amplitude in the left frontal region; (d) spikes at 3 Hz frequency in left fronto-temporal region during N2 phase of sleep and (e) generalized critical epileptiform activity upon awakening.