Skip to main content
. 2015 Mar 5;113(9):3242–3255. doi: 10.1152/jn.00624.2014

Fig. 7.

Fig. 7.

Difference of interlaminar phase-amplitude coupling as a function of frequency for phase references in different layers of V1 and SEF. Each matrix was obtained by subtracting the Tort MI using L4 (V1) or L3 (SEF) phase-locked signals from L5 phase-locked signals between low-frequency phase (3–60 Hz) and high-frequency amplitude (30–300 Hz) in 1-Hz steps. A: frequency-dependent MI across laminar compartments for L4 phase-locked signals subtracted from the MI derived from L5 phase-locked signals in area V1 (n = 15). Positive MI values for L2/3 and L5 suggest that gamma amplitude in these layers was coupled stronger with alpha phase in L5 than that in L4. B: same as A but for a contrast between L3 and L5 phase-locked signals in area SEF. MI patterns for SEF suggest that phase-amplitude coupling was stronger within layers than between L5 and L4 and that these effects were strongest outside of the alpha range. Note the difference in spectral patterns of coupling across layers between V1 and SEF.