PMID- 31526850 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20210514 IS - 1872-8111 (Electronic) IS - 0168-0102 (Linking) VI - 156 DP - 2020 Jul TI - Information-theoretic approach to detect directional information flow in EEG signals induced by TMS. PG - 197-205 LID - S0168-0102(19)30522-X [pii] LID - 10.1016/j.neures.2019.09.003 [doi] AB - Effective connectivity analysis has been widely applied to noninvasive recordings such as functional magnetic resonance imaging and electroencephalograms (EEGs). Previous studies have aimed to extract the causal relations between brain regions, but the validity of the derived connectivity has not yet been fully determined. This is because it is generally difficult to identify causality in the usual experimental framework based on observations alone. Transcranial magnetic stimulation (TMS) provides a framework in which a controllable perturbation is applied to a local brain region and the effect is examined by comparing the neural activity with and without this stimulation. This study evaluates two methods for effective connectivity analysis, symbolic transfer entropy (STE) and vector autoregression (VAR), by applying them to TMS-EEG data. In terms of the consistency of results from different experimental sessions, STE is found to yield robust results irrespective of sessions, whereas VAR produces less correlation between sessions. Furthermore, STE preferentially detects the directional information flow from the TMS target. Taken together, our results suggest that STE is a reliable method for detecting the effect of TMS, implying that it would also be useful for identifying neural activity during cognitive tasks and resting states. CI - Copyright (c) 2019 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Ye, Song AU - Ye S AD - Graduate School of Information Science and Engineering, Ritsumeikan University, Japan. FAU - Kitajo, Keiichi AU - Kitajo K AD - CBS-TOYOTA Collaboration Center, RIKEN Center for Brain Science, Japan; Division of Neural Dynamics, National Institutes for Physiological Sciences, National Institutes of Natural Sciences, Japan; Department of Physiological Sciences, School of Life Science, The Graduate University for Advanced Studies (SOKENDAI), Japan. FAU - Kitano, Katsunori AU - Kitano K AD - Department of Information Science and Engineering, Ritsumeikan University, Japan. Electronic address: kkt23219@is.ritsumei.ac.jp. LA - eng PT - Journal Article DEP - 20190914 PL - Ireland TA - Neurosci Res JT - Neuroscience research JID - 8500749 SB - IM MH - Brain MH - *Brain Mapping MH - Electroencephalography MH - Magnetic Resonance Imaging MH - *Transcranial Magnetic Stimulation OTO - NOTNLM OT - Causal relation OT - Effective connectivity OT - Electroencephalogram (EEG) OT - Granger causality OT - Transcranial magnetic stimulation (TMS) OT - Transfer entropy EDAT- 2019/09/19 06:00 MHDA- 2021/05/15 06:00 CRDT- 2019/09/19 06:00 PHST- 2019/07/22 00:00 [received] PHST- 2019/08/31 00:00 [revised] PHST- 2019/09/07 00:00 [accepted] PHST- 2019/09/19 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] PHST- 2019/09/19 06:00 [entrez] AID - S0168-0102(19)30522-X [pii] AID - 10.1016/j.neures.2019.09.003 [doi] PST - ppublish SO - Neurosci Res. 2020 Jul;156:197-205. doi: 10.1016/j.neures.2019.09.003. Epub 2019 Sep 14.