Results 251 to 260 of about 179,759 (298)

Central beta rhythm during sensorimotor activities in man

Electroencephalography and Clinical Neurophysiology, 1981
Blocking or desynchronization of the central beta rhythm prior to and parallel to voluntary movement was found in 31 of 33 normal subjects investigated. The beta blocking was short lasting (1-3 sec), very often accompanied by blocking of the mu rhythm and localized in the central region.
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Model neocortical microcircuit supports beta and gamma rhythms

2021 10th International IEEE/EMBS Conference on Neural Engineering (NER), 2021
Gamma and beta rhythms in neocortical circuits are thought to be caused by distinct subcircuits involving different type of interneurons. However, it is not clear how these distinct but inter-linked intrinsic circuits interact with afferent drive to engender the two rhythms. We report a biophysical computational model to investigate the hypothesis that
Feng, Feng, Drew B, Headley, Satish S, Nair   +2 more
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Anatomical localization of cortical beta rhythms in cat

Neuroscience, 1987
Beta electrocorticographic rhythms (40 Hz) develop during motionless focused attention in two distinct cortical foci in cats. A cytoarchitectonic study was performed to determine the precise location of these foci. Electrode tips recording beta rhythms were found: (i) in motor areas 4 gamma and 6a beta, in a band extending from the postcruciate cortex ...
J J, Bouyer, M F, Montaron, J M, Vahnée, M P, Albert, A, Rougeul   +4 more
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New Roles for the Gamma Rhythm: Population Tuning and Preprocessing for the Beta Rhythm

Journal of Computational Neuroscience, 2003
Gamma (30-80 Hz) and beta (12-30 Hz) oscillations such as those displayed by in vitro hippocampal (CA1) slice preparations and by in vivo neocortical EEGs often occur successively, with a spontaneous transition between them. In the gamma rhythm, pyramidal cells fire together with the interneurons, while in the beta rhythm, pyramidal cells fire on a ...
Mette S, Olufsen, Miles A, Whittington, Marcelo, Camperi, Nancy, Kopell   +3 more
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Beta blocker therapy modifies circadian rhythm acute myocardial infarction

International Journal of Cardiology, 2011
Some studies about the onset time of AMI revealed that the peak incidence of pain onset signaling the occurrence of AMI ranged from 08:00 to 11:00 h in presumably diurnally active persons [1,2]. A recent study published by our group showed a morning incidence peak as well [3].
J R, Garmendia-Leiza, J M, Andres-de-Llano, J, Ardura-Fernandez, J B, Lopez-Messa, C, Alberola-Lopez, P, Casaseca-Higuera   +5 more
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Fast (beta) rhythms in the hippocampus: A review

Hippocampus, 1992
AbstractSpontaneous or evoked brain activity in the hippocampus showed a 20–70 Hz beta rhythm under some conditions, typically during behavioral activation and accompanied by a theta rhythm. Beta rhythms are generated locally, perhaps by a recurrent feedback loop involving pyramidal cells and inhibitory interneurons. Modulation of the local circuit and
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Beta-blockers in acute coronary syndrome: does rhythm matter?

European Heart Journal, 2022
Abstract Introduction Beta-blockers (BB) are recommended in patients with previous acute myocardial infarction (AMI), aiming to reduce morbidity and mortality. Their benefit is greater in patients with associated left ventricular dysfunction.
C Carvalho, J Monteiro, P Carvalho, A Baptista, J Moreira   +4 more
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Stability analysis on beta rhythm in CA1 region

International Conference on Neural Networks and Signal Processing, 2003. Proceedings of the 2003, 2003
Rhythms in the gamma range and the beta range are associated with attention, perception, and cognition. Therefore, the mechanism of how long-distance synchrony between participating sites is achieved becomes one of the important issues of neuroscience.
null Dong-Uk Hwang, null Sang-Gui Lee, null Seung Kee Han, null Hyungtae Kook   +3 more
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Individual musical tempo preference correlates with EEG beta rhythm

Psychophysiology, 2014
AbstractEvery individual has a preferred musical tempo, which peaks slightly above 120 beats per minute and is subject to interindividual variation. The preferred tempo is believed to be associated with rhythmic body movements as well as motor cortex activity. However, a long‐standing question is whether preferred tempo is determined biologically.
Anna-Katharina R, Bauer, Gunter, Kreutz, Christoph S, Herrmann   +2 more
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