• Oscillatory activity in groups of neurons generally arises from feedback connections between the neurons that result in the synchronization of their firing patterns. (wikipedia.org)
  • In addition to local synchronization, oscillatory activity of distant neural structures (single neurons or neural ensembles) can synchronize. (wikipedia.org)
  • Contrary to neuron synchronization, neural isolation is when electrical activity of neurons are not temporally synchronized. (wikipedia.org)
  • In the brain, synchronization allows important information to be sent back and forth between neurons, so that we can make decisions and function in our daily lives. (frontiersin.org)
  • This is where synchronization of neurons is important. (frontiersin.org)
  • Synchronization in the brain is just as important: it allows neurons to communicate effectively, so that important information can be sent where it needs to go! (frontiersin.org)
  • Synchronization means that different neurons generate bouts of electrical activity at the same time, which facilitates the exchange of information between neurons. (frontiersin.org)
  • On the role of arkypallidal and prototypical neurons for phase transitions in the external pallidum. (mpg.de)
  • On the role of arkypallidal and prototypical neurons for neural synchronization in the basal ganglia. (mpg.de)
  • These results emphasize the important role that phase synchronization, desynchronization, and thus, inhibition, play in the construction of compositional meaning by distributed neural networks in the brain. (mpi.nl)
  • Synchronization and desynchronization in epilepsy: controversies and hypotheses. (ox.ac.uk)
  • Event-related potentials (ERPs) and event-related synchronization/desynchronization (ERS/ERD) are extracted from EEG, which are used as evaluation indexes to distinguish between vibration and pressure, and also to discriminate sensation grades. (bath.ac.uk)
  • Neural oscillations are observed throughout the central nervous system at all levels, and include spike trains, local field potentials and large-scale oscillations which can be measured by electroencephalography (EEG). (wikipedia.org)
  • In general, oscillations can be characterized by their frequency, amplitude and phase. (wikipedia.org)
  • In large-scale oscillations, amplitude changes are considered to result from changes in synchronization within a neural ensemble, also referred to as local synchronization. (wikipedia.org)
  • Neural oscillations and synchronization have been linked to many cognitive functions such as information transfer, perception, motor control and memory. (wikipedia.org)
  • This is possibly due to higher phase synchronization of alpha oscillations over extended regions, exceeding the spatial sensitivity of iEEG but detected by MEG. (crmath.ca)
  • The discovery of oscillations in brain activity is as old as electroencephalography (EEG), but only with the development of powerful imaging and computational techniques in the last decades it has been possible to start understanding the role of brain rhythms in brain physiology, pathology, and cognition. (nerdygang.com)
  • Experimental research on brain oscillations and neural synchronization has been accompanied by an intense effort to understand the generation of rhythms and the mechanisms of neural synchronization through computational modeling and non-linear dynamics. (nerdygang.com)
  • ERPs were characterized by enhanced and strongly phase-locked theta oscillations in the early (0-300 ms) poststimulus epoch, with only the late (300-600 ms) theta responses at Fz and Pz affected by the oddball condition. (southampton.ac.uk)
  • The absolute mean values of amplitude co-modulation (0.40 ± 0.03) and phase synchronisation (0.29 ± 0.02) off medication were, however, relatively low, suggesting that the two basal ganglia networks may have to be approached separately with independent sensing and stimulation during adaptive deep brain stimulation. (ox.ac.uk)
  • Higher frequency is associated with greater neuronal synchronization. (christianneuroscience.com)
  • The interaction may improve human cognition through neuronal synchronization. (utm.my)
  • This study aims to compare the phase synchronization index (SI) across multiple channels during wake and various sleep stages on scalp electroencephalographic recordings. (isical.ac.in)
  • Spatiotemporal features of β-γ phase-amplitude coupling in Parkinson's disease derived from scalp EEG. (mpg.de)
  • We evaluated the relationship between brain rhythmicity and both the cerebrovascular damage (CVD) and amygdalohippocampal complex (AHC) atrophy, as revealed by scalp electroencephalography (EEG) in a cohort of subjects with mild cognitive impairment (MCI). (hindawi.com)
  • For this reason, the study of brain rhythms and synchronization of oscillatory activity is currently one of the hottest topics in neuroscience. (nerdygang.com)
  • However, pathological alterations of the brain networks during the preclinical phase of amnestic Mild Cognitive Impairment (aMCI) remain largely unknown. (aston.ac.uk)
  • Epilepsy has been historically seen as a functional brain disorder associated with excessive synchronization of large neuronal populations leading to a hypersynchronous state. (ox.ac.uk)
  • In addition, our findings highlight the functional distinction between the lower and upper beta frequency ranges and between amplitude co-modulation and phase synchronization across subthalamic nuclei. (ox.ac.uk)
  • To quantify functional coupling, we determined neural synchronization which might be key for the timing of the activity within brain regions during task execution. (vu.nl)
  • Our results indicate a declined functional network organization even during the prodromal phase. (aston.ac.uk)
  • Simultaneous electroencephalography-functional MRI (EEG-fMRI) is a unique and noninvasive method for epilepsy presurgical evaluation. (crmath.ca)
  • For some time, electroencephalography (EEG) has been employed clinically as a measure of brain function in the hope of determining and differentiating certain functional conditions of the brain. (medscape.com)
  • As evidenced by seizures in epilepsies and tremor activity in Parkinson disease, very rhythmic activity and excessive synchronization may be pathological for the nervous system (especially for the higher brain centers, as it may be adequate for other regions involved in the control of, say, breathing patterns). (nerdygang.com)
  • here we ask whether phase synchronization in the form of either inter-trial phrase coherence or cross-frequency coupling (CFC) between high-frequency (i.e. gamma) bursts and lower-frequency carrier signals (i.e. delta, theta), changes as the linguistic structures of compositional meaning (viz. (mpi.nl)
  • We investigate the use of a parametric estimation of the time-frequency transform as a means of improving the detection capability for a range of phase analysis methods. (johnshopkins.edu)
  • Can be measured with electroencephalography (EEG) for frequency, amplitude and phase. (christianneuroscience.com)
  • Here, we assessed neural activity via high-density electroencephalography, focussing on changes of activity in the beta frequency band (~15-30 Hz) across the motor network in 26 young adult participants (19-29 years old). (vu.nl)
  • Visual stimuli inducing episodic memory processes have produced event-related theta synchronization that suggests a strong connection between theta activity and memory operations (Klimesch et al. (southampton.ac.uk)
  • Electroencephalographic phase synchronization during awake, non-rapid eye movement (N1, N2, N3), and rapid eye movement sleep states was studied using ensemble measure (multichannel measure across all the eight channels based on Hilbert transformation between any two pairs). (isical.ac.in)
  • Individual source activity with realistic head models was reconstructed at seven regions of interest including frontal and parietal areas, among which we estimated phase-based connectivity. (vu.nl)
  • For connectivity analysis, we calculated four widely used metrics- Amplitude Envelope Correlation (AEC), orthogonalized AEC (OAEC), Phase Locking Value (PLV) and corrected imaginary part of PLV (ciPLV) and compared the cross-modal spatial correlation between MEG and iEEG connectomes. (crmath.ca)
  • By developing a biologically plausible simulation approach based on bifurcation and multilayer network theories, we demonstrate that astrocytic and neuronal networks engage in a dialogue over fast and slow fluctuations or over phase-based and amplitude-based network connectivity. (crmath.ca)
  • Synchronization means two processes show coordinated rhythmic activity (like peaking at the same time). (frontiersin.org)
  • On the other hand, a large corpus of evidence has shown the connection of brain rhythms and neural synchronization to cognition. (nerdygang.com)
  • Here, we used electroencephalography to record participants' brain activity as they listened to non‐repeating musical rhythms while either attending to the rhythms or while distracted by a concurrent visual task. (researchgate.net)
  • Detecting significant periods of phase synchronization in EEG recordings is a non-trivial task that is made especially difficult when considering the effects of volume conduction and common sources. (johnshopkins.edu)
  • Common features include power spectral density, waveform amplitude, and phase synchronization. (solveforce.com)
  • ECT modulated resting-state EEG oscillatory patterns and phase synchronization in central nodes of the default mode network (DMN). (lifeafterect.com)
  • Mathematics can help researchers and doctors understand patterns of abnormal synchronization in the brain and help them to diagnose and potentially treat the symptoms of brain disorders. (frontiersin.org)
  • Finally, we briefly compare the terminology used in physics and neuroscience in the context of synchronization phenomena. (nerdygang.com)
  • that is, in FES gait training, FES-induced sensory inputs in specific phases would interact with walking-induced cortical activity to induce neuroplastic changes. (frontiersin.org)
  • This is supported by the observation that in able-bodied participants corticospinal excitability is increased after FES gait training according to walking phases, but not after gait training alone ( Kido Thompson and Stein, 2004 ). (frontiersin.org)
  • Thus, synchronization of cortical activation with sensory inputs and the facilitation of corticospinal excitability are related to improvements of gait functions. (frontiersin.org)
  • We observe increased phase synchronization as a function of phrase counts in the delta, theta, and gamma bands, especially for function words. (mpi.nl)
  • ECT increased theta phase synchronization between the posterior cingulate cortex (PCC) and the anterior frontal cortex, and decreased beta phase synchronization between the PCC and temporal regions. (lifeafterect.com)
  • Theta responses from 15 adults were analyzed for single-sweep amplitude, phase-locking, and enhancement against prestimulus activity. (southampton.ac.uk)
  • The effects of ECT on neuronal oscillatory pattern and phase synchronization, and the relationship between clinical response or cognitive change and electroencephalogram (EEG) measurements remain elusive. (lifeafterect.com)
  • A decline in beta synchronization in the left hemisphere was associated with cognitive changes after ECT. (lifeafterect.com)
  • Changes in beta synchronization in the left hemisphere might explain the ECT-related cognitive side effects. (lifeafterect.com)
  • The PEAM model divides cognitive processes associated with product use into 4 phases: prediction, experience, appraisal, and memory. (asme.org)
  • Limited channel electroencephalography (EEG) investigations in obstructive sleep apnea (OSA) have revealed deficits in slow wave activity (SWA) and spindles during sleep and increased EEG slowing during resting wakefulness. (qxmd.com)
  • This facilitation likely occurred due to the synchronization of sensory inputs from FES and cortical activity during AO + MI. (frontiersin.org)
  • We examined the spatiotemporal changes in brain activity associated with product evaluation and memory during the prediction phase, by obtaining electroencephalograms (EEGs). (asme.org)
  • Recent evidence showed that epileptiform phenomena, particularly seizures, result from complex interactions between neuronal networks characterized by heterogeneity of neuronal firing and dynamical evolution of synchronization. (ox.ac.uk)
  • In this review we discuss cellular and network mechanisms responsible for such complex changes in synchronization. (ox.ac.uk)
  • It is vital that synchronization occurs, to allow all of these brain areas to communicate with each other, so that our minds and our bodies can function properly. (frontiersin.org)
  • These two phases of BP are differentially influenced by various factors, especially by complexity of the movement which enhances only the late BP. (nih.gov)
  • Moving on Time: Brain Network for Auditory-Motor Synchronization is Modulated by Rhythm Complexity and Musical Training. (utm.my)
  • We also separately analysed amplitude co-modulation and phase synchronisation in the beta band and found significant amplitude co-modulation and phase locking values in 17 and 16 subjects respectively, off medication. (ox.ac.uk)
  • Our findings suggest that modulation of long-range synchronization is instrumental for coping with increasing task demands in bimanual coordination. (vu.nl)
  • There was a dissociable effect of levodopa on these measures, with a significant suppression only in low beta phase locking value (t22 = -2.8, p = 0.01) and not amplitude co-modulation. (ox.ac.uk)
  • A variety of phase synchronization analysis methods have been developed with each offering a different approach for dealing with these confounds. (johnshopkins.edu)
  • Phase synchronization analysis of natural wake and sleep states in hea" by Chetan S. Nayak, Aakash Bhowmik et al. (isical.ac.in)
  • Synchronization analysis through the Orthogonal Discrete Wavelet Transform (ODWT), and directional brain network analysis were applied on the EEG data. (aston.ac.uk)
  • De-synchronization of innate biologic / circadian cycles. (genderi.org)
  • Beta phase synchronization in the frontal-temporal-cerebellar network during auditory-to-motor rhythm learning. (utm.my)
  • Results: With the progression of states of wakefulness to non- rapid eye movement sleep, there was progressive increase in phase SI in delta band while SI decreased in alpha band (P (isical.ac.in)
  • A natural extension of this claim is that phase synchronization functions similarly to support the inference of more abstract higher-level linguistic structures (Martin 2016 Front. (mpi.nl)
  • Results: FC constructed by synchronization of signals in the time domain was suitable for predicting event-related potential activation. (elsevierpure.com)
  • Conclusions: This is the first study that has used an ensemble measure to assess the long-range cortical phase synchronization during awake and various sleep stages. (isical.ac.in)
  • In addition, FC measured by phase distributions had superior prediction accuracy for predicting spectral power. (elsevierpure.com)
  • Our data suggest that memory is used for product evaluation in the prediction phase. (asme.org)
  • to assess the relationship between linguistic structure and phase alignment. (mpi.nl)
  • Results show that five-phase P1-N1-P2-N2-P3 deflection is induced in EEG. (bath.ac.uk)
  • Dynamic regimes of spiking neural networks with short-term adaptation: Phase transitions of low-dimensional manifolds between asynchronous, synchronized and chaotic regimes. (mpg.de)
  • We then demonstrate the utility of our technique using both simulated and actual EEG data by showing that the derived phase synchronization estimates are more robust to noise and volume conduction effects. (johnshopkins.edu)