نتایج جستجو برای: alpha band

تعداد نتایج: 332888  

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2012
Sepideh Sadaghiani René Scheeringa Katia Lehongre Benjamin Morillon Anne-Lise Giraud Mark D'Esposito Andreas Kleinschmidt

Neural oscillations in the alpha band (8-12 Hz) are increasingly viewed as an active inhibitory mechanism that gates and controls sensory information processing as a function of cognitive relevance. Extending this view, phase synchronization of alpha oscillations across distant cortical regions could regulate integration of information. Here, we investigated whether such long-range cross-region...

Journal: :Neuroreport 1997
M M Müller M Junghöfer T Elbert B Rochstroh

The present study was based on earlier findings that the observation of a coherently moving long bar induced gamma-band activity in humans. The power in the EEG-gamma-band was reduced during the presentation of two incoherently moving short bars. The present study demonstrates the replicability of this cortical activity pattern and illustrates intersubjective variability in its topography. In a...

2016
Martine R. van Schouwenburg Theodore P. Zanto Adam Gazzaley

A frontoparietal network has long been implicated in top-down control of attention. Recent studies have suggested that this network might communicate through coherence in the alpha band. Here we aimed to test the effect of coherent alpha (8-12 Hz) stimulation on the frontoparietal network. To this end, we recorded behavioral performance and electroencephalography (EEG) data while participants w...

2014
Francesco Budini Lara M. McManus Marika Berchicci Federica Menotti Andrea Macaluso Francesco Di Russo Madeleine M. Lowery Giuseppe De Vito

The present work aimed at investigating the effects of mechanically amplified tremor on cortico-muscular coherence (CMC) in the alpha band. The study of CMC in this specific band is of particular interest because this coherence is usually absent in healthy individuals and it is an aberrant feature in patients affected by pathological tremors; understanding its mechanisms is therefore important....

2012
Wolfgang Klimesch

Alpha-band oscillations are the dominant oscillations in the human brain and recent evidence suggests that they have an inhibitory function. Nonetheless, there is little doubt that alpha-band oscillations also play an active role in information processing. In this article, I suggest that alpha-band oscillations have two roles (inhibition and timing) that are closely linked to two fundamental fu...

Journal: :Frontiers in Human Neuroscience 2011

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2017
Tzvetan Popov Sabine Kastner Ole Jensen

Recent findings in the visual system of nonhuman primates have demonstrated an important role of gamma-band activity (40-100 Hz) in the feedforward flow of sensory information, whereas feedback control appears to be established dynamically by oscillations in the alpha (8-13 Hz) and beta (13-18 Hz) bands (van Kerkoerle et al., 2014; Bastos et al., 2015). It is not clear, however, how alpha oscil...

ژورنال: ارگونومی 2018

Introduction: Sound as a detrimental factor in working environments can create annoying conditions for people in addition to physical problems. Therefore, in addition to evaluating quantitative parameters such as pressure levels, it is absolutely necessary to study the quality parameters of the sound in the work environment. Material & Methods: In this descriptive-analytic research, the sound ...

2015
Rania Ghosn Lydia Yahia-Cherif Laurent Hugueville Antoine Ducorps Jean-Didier Lemaréchal György Thuróczy René de Seze Brahim Selmaoui Brahim SELMAOUI

6 1 Institut National de l’Environnement Industriel et des Risques (INERIS), Department of Experimental 7 Toxicology, Verneuil-en-Halatte, France 8 2 Université de Picardie Jules Verne (UPJV), Peritox Laboratoire de Périnatalité & Risques Toxiques UMR-I-01 9 Unité mixte INERIS, Amiens France 10 3 UPMC, Univ Paris 06, Centre MEG-EEG, Centre de Recherche de l'Institut du Cerveau et de la Moelle 1...

Journal: :Cerebral cortex 2002
Ole Jensen Jack Gelfand John Kounios John E Lisman

To study the role of brain oscillations in working memory, we recorded the scalp electroencephalogram (EEG) during the retention interval of a modified Sternberg task. A power spectral analysis of the EEG during the retention interval revealed a clear peak at 9-12 Hz, a frequency in the alpha band (8-13 Hz). In apparent conflict with previous ideas according to which alpha band oscillations rep...

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