Results 11 to 20 of about 179,759 (298)
On the human sensorimotor-cortex beta rhythm: Sources and modeling
NeuroImage, 2005 Cortical oscillations in the beta band (13-35 Hz) are known to be modulated by the GABAergic agonist benzodiazepine. To investigate the mechanisms generating the approximately 20-Hz oscillations in the human cortex, we administered benzodiazepines to healthy adults and monitored cortical oscillatory activity by means of magnetoencephalography ...
O, Jensen +5 more
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Period concatenation underlies interactions between gamma and beta rhythms in neocortex [PDF]
Frontiers in Cellular Neuroscience, 2008 The neocortex generates rhythmic electrical activity over a frequency range covering many decades. Specific cognitive and motor states are associated with oscillations in discrete frequency bands within this range, but it is not known whether ...
Anita K Roopun +6 more
doaj +4 more sources
Beta rhythm events predict corticospinal motor output. [PDF]
Sci Rep, 2019 AbstractThe beta rhythm (15-30 Hz) is a prominent signal of sensorimotor cortical activity. This rhythm is not sustained but occurs non-rhythmically as brief events of a few (1–2) oscillatory cycles. Recent work on the relationship between these events and sensorimotor performance suggests that they are the biologically relevant elements of the beta ...
Hussain SJ, Cohen LG, Bönstrup M.
europepmc +4 more sources
The effect of alertness and attention on the modulation of the beta rhythm to tactile stimulation. [PDF]
Physiol Rep, 2021 Illman M +4 more
europepmc +2 more sources
Neurofeedback training for children with ADHD using individual beta rhythm. [PDF]
Cogn Neurodyn, 2022 Neurofeedback training (NFT) is a noninvasive neuromodulation method for children with attention-deficit/hyperactivity disorder (ADHD). Brain rhythms, the unique pattern in electroencephalogram (EEG), are widely used as the training target. Most of current studies used a fixed frequency division of brain rhythms, which ignores the individual ...
Hao Z +4 more
europepmc +3 more sources
Reproducibility of Rolandic beta rhythm modulation in MEG and EEG.
J Neurophysiol, 2022 The present study demonstrates that beta rhythm modulation is highly reproducible in a group of healthy subjects within a year. Hence, it can be reliably used as a biomarker in longitudinal follow-up studies in different neurological patient groups to reflect changes in the functional state of the sensorimotor cortex.
Illman M +4 more
europepmc +7 more sources
Gamma rhythms and beta rhythms have different synchronization properties [PDF]
Proceedings of the National Academy of Sciences, 2000 Experimental and modeling efforts suggest that rhythms in the CA1 region of the hippocampus that are in the beta range (12–29 Hz) have a different dynamical structure than that of gamma (30–70 Hz). We use a simplified model to show that the different rhythms employ different dynamical mechanisms to synchronize, based on different ionic currents.
Kopell, N. +3 more
openaire +4 more sources
Dopaminergic drugs alter beta coherence during motor imagery and motor execution in healthy adults [PDF]
Arquivos de Neuro-Psiquiatria, 2020 Background: Motor Imagery (MI) represents the cognitive component of the movement and recruits dopaminergic systems. Objective: To investigate the role of dopaminergic system through the action of methylphenidate and risperidone over beta coherence ...
Danielle APRIGIO +9 more
doaj +1 more source
Alpha, beta: The rhythm of the attentional blink [PDF]
Psychonomic Bulletin & Review, 2017 Extant theories of the attentional blink propose that the most critical factor in determining second target accuracy is the time that elapses between the first and second targets. We report that this conclusion has overlooked an equally important determinant, namely, the frequency of the entraining stream in which these targets are embedded ...
Shapiro, Kimron L. +3 more
openaire +3 more sources
The Semantics of Natural Objects and Tools in the Brain: A Combined Behavioral and MEG Study
Brain Sciences, 2022 Current literature supports the notion that the recognition of objects, when visually presented, is sub-served by neural structures different from those responsible for the semantic processing of their nouns.
Elisa Visani +6 more
doaj +1 more source