Neural Oscillation PAC — Theta-Gamma Coupling

Phase-Amplitude Coupling: gamma power modulated by theta phase
A_γ(t) = [1 + m·cos(φ_θ(t) − φ_pref)] · A₀  |  MI = KL(p(A|φ), uniform) / log(N)
6 Hz
60 Hz
0.70
0.30
90°
Modulation Index
Mean Gamma Amp
Phase Preference