Stanis{\l}aw Nar\k{e}bski, Tomasz Komendzi\'nski, Tomasz M. Rutkowski: Deep Sleep Classification via EEG Signal Criticality: A Passive BCI Approach for Sleep-Improvement Neurofeedback https://arxiv.org/abs/2606.13017 https://arxiv.org/pdf/2606.13017 https://arxiv.org/html/2606.13017