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Fig. 4 | Neuropsychiatric Electrophysiology

Fig. 4

From: Distortions in EEG interregional phase synchrony by spherical spline interpolation: causes and remedies

Fig. 4

Interaction of frequency with distance between electrode pairs (DISTpair) and SSI parameters. a Significant frequency by DISTpair interaction indicated that the frequency effect (larger dPLV in gamma than in alpha band) was significant only in near electrode pairs. Significant 3-way interactions among frequency, DISTpair, and the 3 SSI-parameters are depicted with bar graphs of frequency by SSI-parameter interactions in near (left panels: b, d, f) and distant electrode pairs (right panels: c, e, g). The frequency effects (i.e., larger dPLVs in gamma than in alpha band) in near electrode pairs were observed especially with SSI parameters that led to larger interpolation errors (i.e., m = 4, n = 4, and λ = 1e-5)

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