Results 41 to 50 of about 87,096 (237)

Amplitude and phase effects on the synchronization of delay-coupled oscillators [PDF]

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2010
We consider the behavior of Stuart–Landau oscillators as generic limit-cycle oscillators when they are interacting with delay. We investigate the role of amplitude and phase instabilities in producing symmetry-breaking/restoring transitions. Using analytical and numerical methods we compare the dynamics of one oscillator with delayed feedback, two ...
D'Huys, Ottilde, FISCHER Bert, Ingo, Danckaert, Jan, Vicente, Roberto   +3 more
openaire   +6 more sources

Measuring Phase–Amplitude Coupling Effect with OPM-MEG

Photonics
Optically pumped magnetometers (OPMs) present a promising opportunity to advance magnetoencephalography (MEG), enhancing the accuracy of neuronal activity recordings due to their high spatiotemporal resolution.
Yong Li, Hao Lu, Chunhui Wang, Fuzhi Cao, Jianzhi Yang, Binyi Su, Ying Liu, Xiaolin Ning   +7 more
doaj   +1 more source

Improving emotional-action control by targeting long-range phase-amplitude neuronal coupling

eLife, 2020
Control over emotional action tendencies is essential for everyday interactions. This cognitive function fails occasionally during socially challenging situations, and systematically in social psychopathologies. We delivered dual-site phase-coupled brain
Bob Bramson, Hanneke EM den Ouden, Ivan Toni, Karin Roelofs   +3 more
doaj   +1 more source

Corticostriatal Coordination through Coherent Phase-Amplitude Coupling [PDF]

The Journal of Neuroscience, 2014
The corticostriatal axis is the main input stage of the basal ganglia and is crucial for their role in motor behavior. Synchronized oscillations might mediate interactions between cortex and striatum during behavior, yet direct evidence remains sparse. Here, we show that, during motor behavior, low- and high-frequency oscillations jointly couple cortex
Constantin, von Nicolai, Gerhard, Engler, Andrew, Sharott, Andreas K, Engel, Christian K, Moll, Markus, Siegel   +5 more
openaire   +3 more sources

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

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

FEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong, Yuhei Hosokawa, Lars Oliver Essen, Manuel Maestre‐Reyna   +3 more
wiley   +1 more source

Phase–Amplitude Coupling and Epileptogenic Zone Localization of Frontal Epilepsy Based on Intracranial EEG

Frontiers in Neurology, 2021
Objective: This study aimed to explore the characteristics of phase-amplitude coupling in patients with frontal epilepsy based on their electrocorticography data, in order to identify the localization of epileptic regions and further guide clinical ...
Huijuan Ma, Zeyu Wang, Chunsheng Li, Jia Chen, Jia Chen, Jia Chen, Yuping Wang, Yuping Wang, Yuping Wang   +8 more
doaj   +1 more source

Deep Learning Pose Estimation for Phenotyping of Co‐Occurring Hyperkinetic Movement Disorders

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore whether routine outpatient video combined with deep learning‐based pose estimation and clinically interpretable kinematic features can support multi‐label phenotyping of co‐occurring hyperkinetic movement disorders (HMDs).
Laura Cif, Diane Demailly, Gabriella A. Horvàth, Juan Dario Ortigoza Escobar, Nathalie Dorison, Mayté Castro Jiménez, Cécile A. Hubsch, Thomas Wirth, Gun‐Marie Hariz, Sophie Huby, Morgan Dornadic, Zohra Souei, Muhammad Mushhood Ur Rehman, Simone Hemm, Mehdi Boulaymen, Eduardo M. Moraud, Jocelyne Bloch, Xavier Vasques   +17 more
wiley   +1 more source

Intracarotid amobarbital disrupts synchronous and nested oscillatory activity ipsilateral to injection

Epilepsy and Behavior Case Reports, 2018
The mechanism of amobarbital action during the intracarotid amobarbital procedure is poorly understood. We report a patient case who underwent IAP while implanted with bilateral stereo-EEG.
James J. Young, Joshua S. Friedman, Thomas J. Oxley, Christina Palmese, Fedor Panov, Saadi Ghatan, Johanna T. Fifi, Lara V. Marcuse   +7 more
doaj   +1 more source

Natural Frequencies of Levodopa‐Induced Dyskinesia in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Abnormal involuntary movements, known as dyskinesias, are common complications of levodopa treatment in patients with Parkinson's disease and can significantly impair quality of life. The underlying pathophysiology remains unclear, and current therapeutic options are limited.
Ioannis U. Isaias, Federica Avantaggiato, Gianni Pezzoli, Andrea Canessa   +3 more
wiley   +1 more source