title: Interictal cardiorespiratory variability in temporal lobe and absence epilepsy in childhood.
abstract: It is well known that epilepsy has a profound effect on the autonomic nervous system, especially on the autonomic control of heart rate and respiration. This effect has been widely studied during seizure activity, but less attention has been given to interictal (i.e. seizure-free) activity. The studies that have been done on this topic, showed that heart rate and respiration can be affected individually, even without the occurrence of seizures. In this work, the interactions between these two individual physiological variables are analysed during interictal activity in temporal lobe and absence epilepsy in childhood. These interactions are assessed by decomposing the predictive information about heart rate variability, into different components like the transfer entropy, cross-entropy, self- entropy and the conditional self entropy. Each one of these components quantifies different types of shared information. However, when using the cross-entropy and the conditional self entropy, it is possible to split the information carried by the heart rate, into two main components, one related to respiration and one related to different mechanisms, like sympathetic activation. This can be done after assuming a directional link going from respiration to heart rate. After analysing all the entropy components, it is shown that in subjects with absence epilepsy the information shared by respiration and heart rate is significantly lower than for normal subjects. And a more remarkable finding indicates that this type of epilepsy seems to have a long term effect on the cardiac and respiratory control mechanisms of the autonomic nervous system.
authors: Department of Electrical Engineering-ESAT, STADIUS Center for Dynamical Systems, Signal Processing and Data Analytics, KU Leuven, Belgium. iMinds Medical IT, Oude Markt 13-bus 5005, 3000 Leuven, Belgium.
authors: Carolina
authors: C
authors: Varon
authors: Alessandro
authors: A
authors: Montalto
authors: Katrien
authors: K
authors: Jansen
authors: Lieven
authors: L
authors: Lagae
authors: Daniele
authors: D
authors: Marinazzo
authors: Luca
authors: L
authors: Faes
authors: Sabine
authors: S
authors: Van Huffel
mesh_terms: D002648:Child; D004562:Electrocardiography / Q000379:methods; D004569:Electroencephalography; D004832:Epilepsy, Absence / Q000503:physiopathology*; D004833:Epilepsy, Temporal Lobe / Q000503:physiopathology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D007257:Information Theory; D064847:Multimodal Imaging; D012119:Respiration; D012815:Signal Processing, Computer-Assisted