Directional Couplings Between Electroencephalogram and Interbeat Intervals Signals in Awake State and Different Stages of Sleep.
Ekaterina I. BorovkovaAlexey N. HramkovAnatoly S. KaravaevVladimir I. PonomarenkoMikhail D. ProkhorovYurii M. IshbulatovThomas PenzelPublished in: EMBC (2021)