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. 2024 Feb 14;67(1):e16. doi: 10.1192/j.eurpsy.2024.10

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© The Author(s) 2024

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.

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Figure 1. — Restoration of the postictal electroencephalogram (EEG) expressed as the evolution of the normalized alpha–delta ratio (ADR; equation 1). (A) Averaged ADR values per minute (blue dots) followed a typical sigmoidal evolution in the postictal state, starting at values close to −1. The evolution of ADR is well described by the sigmoidal curve (solid red line), defined by equation 2. Here, = 1.0 ± 0.1 ( ADR) and = 5.9 ± 4.4 min. (B) From the derivative (green solid line), defined by equation 3, T_max is estimated. Here, T_max = 27 min. These data are from subject 2 in this study.

Inline graphic — Restoration of the postictal electroencephalogram (EEG) expressed as the evolution of the normalized alpha–delta ratio (ADR; equation 1). (A) Averaged ADR values per minute (blue dots) followed a typical sigmoidal evolution in the postictal state, starting at values close to −1. The evolution of ADR is well described by the sigmoidal curve (solid red line), defined by equation 2. Here, = 1.0 ± 0.1 ( ADR) and = 5.9 ± 4.4 min. (B) From the derivative (green solid line), defined by equation 3, T_max is estimated. Here, T_max = 27 min. These data are from subject 2 in this study.