Premium
Reliability of event‐related EEG functional connectivity during visual entrainment: Magnitude squared coherence and phase synchrony estimates
Author(s) -
Miskovic Vladimir,
Keil Andreas
Publication year - 2015
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/psyp.12287
Subject(s) - entrainment (biomusicology) , psychology , coherence (philosophical gambling strategy) , electroencephalography , reliability (semiconductor) , magnitude (astronomy) , phase (matter) , phase coherence , functional connectivity , audiology , cognitive psychology , statistics , statistical physics , communication , neuroscience , physics , mathematics , quantum mechanics , astrophysics , power (physics) , rhythm , acoustics , medicine , condensed matter physics
There is an increasing trend towards using noninvasive electroencephalography ( EEG ) to quantify functional brain connectivity. However, little is known about the psychometrics of commonly used functional connectivity indices. We examined the internal consistency of two different connectivity metrics: magnitude squared coherence and phase synchrony. EEG was recorded during visual entrainment to elicit a strong oscillatory component of known frequency. We found acceptable to good split‐half reliability for the connectivity metrics when computing all possible pairwise interactions and after selecting an a priori seed reference. We also compared reliability estimates when using average referenced sensor versus reference independent current source density EEG data. Additional considerations were given to determining how reliability was influenced by factors including trial number, signal‐to‐noise ratio, and frequency content.