Figure 3
From: Time-Frequency Based Phase-Amplitude Coupling Measure For Neuronal Oscillations
Comparison of proposed tf-MVL method with conventional PAC measures through comodulograms and Shannon entropy measure: (a) Hilbert transform based PAC (Hilbert-MVL) measure; (b) Generalized Morse Transform based PAC (Wavelet-MVL) measure and (c) Proposed time-frequency based PAC (tf-MVL) measure; (d) Comparison of Entropy Measure for Hilbert-MVL, Wavelet-MVL and tf-MVL comodulograms for varying SNR levels. A low entropy value corresponds to a comodulogram that is well-localized, while a high entropy value corresponds to a comodulogram that is distributed across a wide range of frequencies. The entropy for the tf-MVL method stays constant across different SNRs indicating the robustness of the method to noise.
