Results 51 to 60 of about 500,266 (287)

Multivariate Phase–Amplitude Cross-Frequency Coupling in Neurophysiological Signals [PDF]

IEEE Transactions on Biomedical Engineering, 2012
Phase-amplitude cross-frequency coupling (CFC)-where the phase of a low-frequency signal modulates the amplitude or power of a high-frequency signal-is a topic of increasing interest in neuroscience. However, existing methods of assessing CFC are inherently bivariate and cannot estimate CFC between more than two signals at a time. Given the increase in
Ryan T, Canolty, Charles F, Cadieu, Kilian, Koepsell, Robert T, Knight, Jose M, Carmena   +4 more
openaire   +2 more sources

The Fermi Surface Effect on Magnetic Interlayer Coupling

, 2004
The oscillating magnetic interlayer coupling of Fe over spacer layers consisting of Cu$_{x}$Pd$_{1-x}$ alloys is investigated by first principles density functional theory.
Anders Bergman, B. L. Györffy, Erik Holmström, H. Nyquist, I. A. Abrikosov, I. A. Abrikosov, K. Ohshima, K. Wildberger, Lars Nordström, O. Andersen, S. B. Dugdale   +10 more
core   +1 more source

Self-quenching of fundamental phase and amplitude noise in semiconductor lasers with dispersive loss [PDF]

, 1990
We show theoretically that the incorporation of a frequency-dependent loss mechanism in a semiconductor laser can lead, in concert with the amplitude-to-phase coupling, to major reductions of the fundamental intensity and phase noise.
Nabiev, Rashit, Vahala, Kerry, Yariv, Amnon   +2 more
core   +1 more source

Time-resolved phase-amplitude coupling in neural oscillations

NeuroImage, 2017
Cross-frequency coupling between neural oscillations is a phenomenon observed across spatial scales in a wide range of preparations, including human non-invasive electrophysiology. Although the functional role and mechanisms involved are not entirely understood, the concept of interdependent neural oscillations drives an active field of research to ...
Soheila, Samiee, Sylvain, Baillet
openaire   +2 more sources

Measuring transient phase-amplitude coupling using local mutual information [PDF]

NeuroImage, 2019
Here we demonstrate the suitability of a local mutual information measure for estimating the temporal dynamics of cross-frequency coupling (CFC) in brain electrophysiological signals. In CFC, concurrent activity streams in different frequency ranges interact and transiently couple.
Martínez-Cancino, Ramón, Heng, Joseph, Delorme, Arnaud, Kreutz-Delgado, Ken, Sotero, Roberto, Makeig, Scott   +5 more
openaire   +3 more sources

Emergence of synchronization induced by the interplay between two prisoner's dilemma games with volunteering in small-world networks

, 2008
We studied synchronization between prisoner's dilemma games with voluntary participation in two Newman-Watts small-world networks. It was found that there are three kinds of synchronization: partial phase synchronization, total phase synchronization and ...
D. G. Myers, E. Feehr, J. Hofbauer, J. M. Smith, J. von Neumann, K. Clark, Lianchun Yu, R. Axelrod, R. Donangelo, Shao-Meng Qin, Shengli Zhang, Yong Chen   +11 more
core   +1 more source

Analyzing possible pitfalls of cross-frequency analysis : poster presentation from Twentieth Annual Computational Neuroscience Meeting CNS*2011 Stockholm, Sweden, 23 - 28 July 2011 [PDF]

, 2011
Poster presentation from Twentieth Annual Computational Neuroscience Meeting: CNS*2011 Stockholm, Sweden. 23-28 July 2011. One of the central questions in neuroscience is how neural activity is organized across different spatial and temporal scales.
Aru, Jaan, Aru, Juhan, Priesemann, Viola, Singer, Wolf, Vicente, Raul, Wibral, Michael   +5 more
core   +2 more sources

REPAC: Reliable Estimation of Phase-Amplitude Coupling in Brain Networks [PDF]

ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021
Recent evidence has revealed cross-frequency coupling and, particularly, phase-amplitude coupling (PAC) as an important strategy for the brain to accomplish a variety of high-level cognitive and sensory functions. However, decoding PAC is still challenging. This contribution presents REPAC, a reliable and robust algorithm for modeling and detecting PAC
openaire   +4 more sources

Effect of Phase Clustering Bias on Phase-Amplitude Coupling for Emotional EEG

Journal of Integrative Neuroscience
Background: Emotions are thought to be related to distinct patterns of neural oscillations, but the interactions among multi-frequency neural oscillations during different emotional states lack full exploration.
Tingyu Sheng, Qiansheng Feng, Zhiguo Luo, Shaokai Zhao, Minpeng Xu, Dong Ming, Ye Yan, Erwei Yin   +7 more
doaj   +1 more source

Lack of redundancy between electrophysiological measures of long-range neuronal communication

BMC Biology, 2021
Background Communication between brain areas has been implicated in a wide range of cognitive and emotive functions and is impaired in numerous mental disorders.
Daniel Strahnen, Sampath K. T. Kapanaiah, Alexei M. Bygrave, Dennis Kätzel   +3 more
doaj   +1 more source