Neural Network Adaptations During Sleep in Apnea: Between Change and Constancy Konstantin Sergeev1,a , Maxim Zhuravlev1,2, Anastasiya Runnova1,3; 1Saratov State University, Saratov, Russia; 2National Medical Research Center for Therapy and Preventive Medicine, Moscow, Russia; 3Saratov State Medical University, Saratov, Russia