2018
DOI: 10.1002/hbm.24309
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Evoked directional network characteristics of epileptogenic tissue derived from single pulse electrical stimulation

Abstract: We investigated effective networks constructed from single pulse electrical stimulation (SPES) in epilepsy patients who underwent intracranial electrocorticography. Using graph analysis, we compared network characteristics of tissue within and outside the epileptogenic area. In 21 patients with subdural electrode grids (1 cm interelectrode distance), we constructed a binary, directional network derived from SPES early responses (<100 ms). We calculated in‐degree, out‐degree, betweenness centrality, the percent… Show more

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Cited by 24 publications
(37 citation statements)
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References 32 publications
(53 reference statements)
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“…Next, based on connectivity analysis of ER networks (Hebbink et al, 2019;van Blooijs et al, 2018), we concluded that DRs are indirect responses to the stimulation. Model simulations show that they may arise from feedforward propagation of ER activity and notably projections to inhibitory populations that normally restrain neural activity.…”
Section: Discussionmentioning
confidence: 94%
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“…Next, based on connectivity analysis of ER networks (Hebbink et al, 2019;van Blooijs et al, 2018), we concluded that DRs are indirect responses to the stimulation. Model simulations show that they may arise from feedforward propagation of ER activity and notably projections to inhibitory populations that normally restrain neural activity.…”
Section: Discussionmentioning
confidence: 94%
“…We use the detected ERs to construct a network representing effective connectivity (Entz et al., ; Hebbink et al., ; Keller et al., ; van Blooijs et al., ). Each electrode represents a node in this network.…”
Section: Methodsmentioning
confidence: 99%
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“…SPES networks might be a good alternative as such models would incorporate more physiological connections. Moreover, SPES ER networks contain information about both the seizure onset zone [37,38] and seizure propagation [35,36]. It would therefore be interesting to compare SPES and ictal networks.…”
Section: Overviewmentioning
confidence: 99%