Howtosignalprocessing
Phase-amplitude coupling (PAC), the coupling of the phase of slower electrophysiological oscillations with the amplitude of faster oscillations, is thought to facilitate dynamic integration of neural activity in the brain.
- How to calculate phase-amplitude coupling?
- What is coupling in EEG?
- What is cross frequency coupling?
- What is a comodulogram?
How to calculate phase-amplitude coupling?
To calculate phase-amplitude coupling, first, raw data is band-pass filtered in the frequency bands of interest. Second, the real-valued band-pass filtered signal is transformed into a complex-valued analytic signal. Finally, phase or amplitude is extracted from the complex-valued analytic signal.
What is coupling in EEG?
The coupling pays close attention to the relationship between two EEG signals from different channels of single brain region or two brain regions, the synchronization more often appears in the relationship between two EEG signals from different brain regions or among multiple EEG signals from more brain regions (Fell ...
What is cross frequency coupling?
Cross-frequency Coupling. • Cross frequency coupling (CFC): – Interaction between oscillations at different frequency bands. • Several synchronized neuronal assemblies in the brain: – Each supports a frequency band of the network rhythm.
What is a comodulogram?
This coupling map, also known as comodulogram, shows the cross-frequency coupling in frequency domain. The pseudo color of the map indicates the level of coupling between each pair of low and high frequencies.
