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Am J Clin Hypn ; 62(1-2): 159-165, 2020 Jul - Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31265374
Am J Clin Hypn ; 61(4): 429-433, 2019 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-31017550
Sci Rep ; 8(1): 4787, 2018 Mar 14.
Artigo em Inglês | MEDLINE | ID: mdl-29540824


A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.

Sci Rep ; 7(1): 15670, 2017 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-29142213


This paper addresses a fundamental question, are eyes closed and eyes open resting states equivalent baseline conditions, or do they have consistently different electrophysiological signatures? We compare the functional connectivity patterns in an eyes closed resting state with an eyes open resting state to investigate the alpha desynchronization hypothesis. The change in functional connectivity from eyes closed to eyes open, is here, for the first time, studied with intracranial recordings. We perform network connectivity analysis in iEEG and we find that phase-based connectivity is sensitive to the transition from eyes closed to eyes open only in interhemispheral and frontal electrodes. Power based connectivity, on the other hand, consistently discriminates between the two conditions in temporal and interhemispheral electrodes. Additionally, we provide a calculation for the wiring cost, defined in terms of the connectivity between electrodes weighted by distance. We find that the wiring cost variation from eyes closed to eyes open is sensitive to the eyes closed and eyes open conditions. We extend the standard network-based approach using the filtration method from algebraic topology which does not rely on the threshold selection problem. Both the wiring cost measure defined here and this novel methodology provide a new avenue for understanding the electrophysiology of resting state.