Cross-frequency coupling (CFC), an electrophysiologically derived measure of oscillatory coupling in the brain, is believed to play a critical role in neuronal computation, learning and The best-studied example of cross-frequency coupling (CFC, see Glossary) is between theta (48 Hz) and gamma (>30 Hz) oscillatory activity in the rodent hippocampus 5, such as amplitude-amplitude coupling (AAC) and phase-phase coupling (PPC). One of the unique features of neural oscillations is that rhythms of distinct frequencies show specific coupling properties, such as cross-frequency coupling (CFC) which CFC has been reported in many cortical and Recent studies suggest that cross-frequency coupling (CFC) might play a functional role in neuronal computation, communication and learning. According to Jensen and Colgin (2007), Electrophysiological 929 The bispectrum describe the cross-frequency coupling in the same time series, to evaluate the cross-930 frequency coupling between two time series, cross-bispectrum is introduced. Authors Jeffrey R Tenney 1 2 , Brady J Is phase-phase cross-frequency coupling involved in the compressed replay and spontaneous reactivation of previously stored patterns of neuronal activity during sleep? Cross-frequency coupling of high-frequency amplitude to the phase of activity at lower frequency was quantified by calculating Pearsons cross-correlations between the In spite of the steady growth of interest related to this phenomenon, its It provides a new perspective on a variety of physiological characteristics ( 10 , 11 ). Introduction It has been hypothesized that phase-amplitude coupling (PAC) of neurophysiological signals plays a role in the shaping of local neuronal oscillations and in the 929 The bispectrum describe the cross This integration could be reflected in the phenomenon of cross-frequency coupling (CFC). In line with this idea, it has recently been observed that CA1 pyramidal cells Hippocampal theta and gamma rhythms are hypothesized to play a role in the physiology of higher cognition. PAC. An application of cross-frequency coupling was given to explore the speech perception in children. Similarly, same-location, cross-frequency phase coupling might serve as a potential mechanism to regulate communication between different spatiotemporal scales 6, The CFC command implements van Wilk et al's method for parametric cross-frequency coupling, using a simple and computationally-efficient approach to phase-amplitude and amplitude-amplitude coupling.. The cross-frequency coupling between neuronal oscillations is observed when one or more properties of the slow wave modulate(s) one or more properties of the fast wave (Jensen & Colgin, Reference Jensen and Colgin 2007). Prior research has reported that an offset in theta cycles between the entorhinal cortex, CA3, and CA1 regions promotes independence of population activity across the hippocampus. Documentation to be added. One of the unique features of neural oscillations is that rhythms of distinct frequencies show specific coupling properties, such as cross-frequency coupling (CFC) which potentially provides a mechanism for synchronization and interaction between local and global processes across wide cortical networks ( Florin and Baillet, 2015 ). Prior research has reported that an offset in theta cycles Mean connectivity from statistically significant group contrasts was correlated to neurocognitive outcomes of serotonin reuptake inhibitors (SRI) -exposed infants at two years of age. This chapter will present the related information to introduce the cross-frequency methods. It is well known that cross-frequency coupling of brain oscillations is a key mecha-nism in spatiotemporal coordination of brain activity (e.g., [31,118]). Cross-frequency coupling (CFC) refers to the phenomenon in which dynamics across two or more frequency bands are related. Documentation to be added Estimates cross-frequency coupling via the GLM method. 39 PDF The precise temporal coordination of neuronal spikes at multiple time scales by cross-frequency phasephase coupling may be beneficial for both transferring information So far, studies have mostly focused on local CFC in individual brain regions, whereas the presence and functional organization of CFC between brain areas have Phase-amplitude coupling (PAC), a type of cross-frequency coupling (CFC) where the phase of a low-frequency rhythm modulates the amplitude of a higher frequency, is becoming an important indicator of information transmission in the brain. CFC. It has received much recent attention in the study of both health and disease. Epub 2021 Sep 24. The plot was also bounded by the upper limit of the frequency range of interest 928 which is indicated by the line 1 + 2 = 60 Hz. Cross-frequency coupling thus has theoretical relevance to ASD, intellectual disability, and associated neurogenetic disorders in which such processes are likely altered [28,29,30]. The plot was also bounded by the upper limit of the frequency range of interest 928 which is indicated by the line 1 + 2 = 60 Hz. processing between frequencies could be achieved via cross-frequency coupling (CFC), either by phaseamplitude coupling (PAC) or by n:m-crossfrequency phase synchrony (CFS). PPC measures coupling between different cortical sources, while PAC estimates cross-frequency coupling within the given source. Cross-frequency coupling between gamma oscillations and deep brain stimulation frequency in Parkinson's disease The disruption of pathologically enhanced beta oscillations is Such a coupling may underlie many functions (Canolty & Knight, Reference Canolty and Knight 2010). Cross-frequency coupling (CFC) between slow and fast brain rhythms, in the form of phase-amplitude coupling (PAC), is proposed to enable the coordination of neural oscillatory activity required for cognitive processing. One form of oscillatory :110113. Cross-frequency coupling In this section we document the nonlinear relation- ships between the variability in L and M and between L and H, focusing on the Atlantic sector where much of the nonlinearity is NAO-related. Cross-frequency coupling analysis To characterize delta-theta and delta-sigma coupling in STIM and SHAM conditions, we first compared the preferred delta phase and A series of studies have found that interaction between different rhythms is associated with cognitive processes. Figure 4 shows the variance of Z Cross-frequency coupling (CFC), which is a dynamic interaction between neural oscillations in different frequency bands, is closely related to memory, perception, and other brain functions. The time delay be-tween two or more brain areas that oscillate on a dominant frequency can inform how time shapes brain function or dysfunction and how it is connected to behavior. Neural oscillatory coupling in the brain plays a critical role in neuronal computation, learning and communication ( Vinogradov and Herman, 2016 ). The generalized eigendecomposition-based cross-frequency coupling framework (gedCFC) is inspired by source separation algorithms combined with dynamics of mesoscopic neurophysiological processes and accurately recovers physiologically plausible CFC patterns embedded in noise where traditional CFC methods perform poorly. 2022 Jun;12(5):489-496. doi: 10.1089/brain.2021.0119. Cross-Frequency Coupling in Childhood Absence Epilepsy Brain Connect. Cross-frequency coupling been observed in many brain regions, has been shown to change in time with task demands, and has been proposed to serve a functional role in working memory, [ Cross-frequency coupling (CFC), an electrophysiologically derived measure of oscillatory coupling in the brain, is believed to play a critical role in neuronal computation, learning and communication. Cross Frequency Coupling is defined as the interaction between oscillations at different frequency bands. One of the unique features of neural oscillations is that rhythms of distinct frequencies show specific coupling properties, such as cross-frequency coupling (CFC) which potentially Hippocampal theta and gamma rhythms are hypothesized to play a role in the physiology of higher cognition.

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