Figure 5—figure supplement 5. | On cross-frequency phase-phase coupling between theta and gamma oscillations in the hippocampus

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On cross-frequency phase-phase coupling between theta and gamma oscillations in the hippocampus

Figure 5—figure supplement 5.

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Federal University of Rio Grande do Norte, Brazil
Figure 5—figure supplement 5.
Download figureOpen in new tabFigure 5—figure supplement 5. Lack of theta-gamma phase-phase coupling in independent components of gamma activity.

(Left) Average phase-amplitude comodulograms for three independent components (IC) that maximize coupling between theta phase and the amplitude of slow gamma (top row), middle gamma (middle row) and fast gamma (bottom row) oscillations (n = 4 animals). Each IC is a weighted sum of LFPs recorded in different hippocampal layers (see Schomburg et al., 2014). (Middle) n:m phase-locking levels for theta phase and the phase of ICs filtered at the gamma band maximally coupled to theta in the phase-amplitude comodulogram. (Right) Original and surrogate distributions of Rn:m values. Rn:m values were computed for 1 s long epochs (n = 4 animals); surrogate gamma phases were obtained by Random Permutation/Single Run.

DOI: http://dx.doi.org/10.7554/eLife.20515.018