AUTHOR=Dong Yan , Jin Liang , Li Mengchun , Lian Ruofei , Wu Gongao , Xu Ruijuan , Zhang Xiaoli , Du Kaixian , Jia Tianming , Wang Haiyan , Zhao Shichao 

TITLE=Crucial involvement of fast waves and Delta band in the brain network attributes of infantile epileptic spasms syndrome

JOURNAL=Frontiers in Pediatrics

VOLUME=Volume 11 - 2023

YEAR=2023

URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2023.1249789

DOI=10.3389/fped.2023.1249789

ISSN=2296-2360

ABSTRACT=Objective: This study aims to describe the characteristics of the brain network attributes in children diagnosed with Infantile Epileptic Spasms Syndrome (IESS) and to determine the influence exerted by adrenocorticotrophic hormone (ACTH) or methylprednisolone (MP) on network attributes.In this retrospective cohort study, we recruited 19 infants diagnosed with IESS and 10 healthy subjects as the control from the Pediatric Neurology Department at the Third Affiliated Hospital of Zhengzhou University between October 2019 and December 2020. The first thirtyminute processed electroencephalograms (EEGs) were clipped and filtered into EEG frequency bands (2s each). A comparative assessment was conducted between the IESS group and the controls as well as the pre-and post-treatment in the IESS group. Mutual information values for each EEG channel were collected and compared including characteristic path length (CPL), node degree (ND), clustering coefficient (CC), and betweenness centrality (BC), based on graph theory.Comparing the control group, in the IESS group, there was an increase in CPL of the Delta band, and a decrease in ND and CC of the Delta band during the waking period, contrary to those during the sleeping period (P < 0.05), an augmentation in CPL of the fast waves and a reduction in ND and CC (P < 0.05) in the sleep-wake cycle, and a decrease in ND and CC of the Theta band in the waking phase. Post-treatment compared with the pre-treatment, during the waking ictal phase, there was a noted decrease in CPL in the Delta band and fast waves, while an increase was observed in ND and CC (P < 0.05).The Delta band and fast waves are crucial components of the network attributes in IESS. This is a provisional file, not the final typeset article Significance: This investigation provides a precise characterization of the brain network in children afflicted with IESS, and lays the groundwork for predicting the prognosis using graph theory.