Measuring phase synchrony in brain signals

By Jean-Philippe Lachaux, Eugenio Rodríguez, Jacques Martinerie, F. Varela. 1999

Subfields: Cognitive Neuroscience, Neuroscience, Signal Processing

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Citations in the corpus

Temporal order of activations and interactions during arithmetic calculations measured by intracranial electrophysiological recordings in the human brain (2026, unknown): “To quantify the interactions and their temporal changes between the different ROIs of the arithmetic network, we computed the PLV 44 for each sample across trials using the “filter-Hilbert” approach 48,85 .”
Distributed theta networks support the control of working memory: Evidence from scalp and intracranial EEG (2025, unknown): “Functional connectivity was quantified per timepoint as the PLV independent of amplitude (Lachaux et al., 1999).”
Bridging verbal coordination and neural dynamics (2025, unknown): “To quantify the degree of coordination of the verbal interaction (verbal coordination index, VCI) we computed the phase locking value using mne_connectivity python function spectral_connectivity_time with the method ‘plv’ based on the phase locking value index proposed by Lachaux et al. (1999).”
Dichotomous frequency-dependent phase synchrony in the sensorimotor network characterizes simplistic movement (2024, methodology): “Unlike previous methods of connectivity used in motor network electrocorticography (time-varying dynamic Bayesian networks) 19,20 , phase-based functional connectivity estimates provide a method to investigate the fre-quency-dependency of the coordinated network activity 13,32 .”
Simultaneous invasive and non-invasive recordings in humans: A novel Rosetta stone for deciphering brain activity (2024, unknown): “The higher resolution of iEEG allows researchers to reverse this paradigm, investigating for instance the neuroanatomical, connectomics, or functional bases underlying activities deviating from population-based findings (Lachaux et al., 1999).”
Altered network connectivity and global efficiency in tourette syndrome: insights into sensorimotor integration (2025, unknown): “Phase locking values (PLVs) provide a metric to quantify the degree of synchronization between neural oscillations across different brain areas and to investigate dynamic network communication (Lachaux et al., 1999).”
Oscillatory entrainment to our early social or physical environment and the emergence of volitional control (2022, unknown): “This can be measured, for example, by calculating the Phase Locking Value (Lachaux et al., 1999).”
Interplay between preclinical indices of obesity and neural signatures of fluid intelligence in youth (2024, unknown): “6A), and then normalized this mean active period value by the mean PLV during the pre-stimulus baseline period per participant.”
The absence of one’s intimate partner promotes dyadic competition through enhanced interbrain synchronization between opponents (2024, methodology): “Frontiers in Psychology 04 frontiersin.org The PLV was used to indicate neural synchronization, and PLV calculations were performed on everyone’s EEG data (Lachaux et al., 1999).”
Theta-Phase Connectivity between Medial Prefrontal and Posterior Areas Underlies Novel Instructions Implementation (2022, methodology): “Then, we computed the phase-locking value (PLV), a measure reflecting the instantaneous phase difference between two signals, with the assumption that two brain areas that are configured to communicate efficiently should have a constant phase difference (Lachaux et al., 1999; Mormann et al., 2000).”
Top-down selection of visual working memory contents is supported by alpha-band phase-synchronized oscillatory networks (2025, unknown): “We computed phase-synchronization for each wavelet frequency using the imaginary part of the complex phase-locking value (iPLV) ( Lachaux et al., 1999; Rouhinen et al., 2020) that is insensitive to zero-lag interactions and hence yields neither artificial nor true zero lag couplings ( J. M. Palva…”
Cell type-specific excitability probed by optogenetic stimulation depends on the phase of the alpha oscillation (2022, background): “, where N is the total number of spikes of the unit [56].”
Dynamic signatures of the Eureka effect: an EEG study (2021, unknown): “(Lachaux et al., 1999; Srinath and Ray, 2014) and serve as an index for the synchronization of different neuron groups.”