Results 261 to 270 of about 42,669 (284)
Some of the next articles are maybe not open access.
The onset mechanism of Parkinson’s beta oscillations: A theoretical analysis
Journal of Theoretical Biology, 2019In this paper, we build a basal ganglia-cortex-thalamus model to study the oscillatory mechanisms and boundary conditions of the beta frequency band (13-30 Hz) that appears in the subthalamic nucleus. First, a theoretical oscillatory boundary formula is obtained in a simplified model by using the Laplace transform and linearization process of the ...
Hu, Bing +6 more
openaire +2 more sources
Medical and Biological Engineering and Computing, 2005 The relationship between the electro-encephalographic (EEG) alpha and beta oscillations in the resting condition was investigated in the study. EEGs were recorded in 33 subjects, and alpha (7.5–12.5 Hz) and beta (15–25 Hz) oscillations were extracted ...
Vadim V Nikulin, Torkel B Brismar
exaly +2 more sources
Do movement-related beta oscillations change after stroke?
Journal of Neurophysiology, 2014 Sections PDF (697 KB) Tools Share Abstract Stroke is the most common cause of physical disability in the world ...
Holly E Rossiter +2 more
exaly +2 more sources
A model of the quasi-biennial oscillation on an equatorial beta-plane
Quarterly Journal of the Royal Meteorological Society, 1982AbstractAn equatorial beta‐plane model of equatorial wave‐mean flow interaction in the lower stratosphere is described. Kelvin and mixed Rossby‐gravity waves generated by a specified forcing on the lower boundary radiate upward through the model domain where they are subject to thermal and mechanical dissipation.
R. Alan Plumb, Robert C. Bell
openaire +1 more source
Oscillating Solutions of the Falkner–Skan Equation for Negative $\beta $
SIAM Journal on Mathematical Analysis, 1987The well known Falkner-Skan equation is studied, when the coefficient of the term which contains the first derivative \(\beta\) is negative. For \(\beta
Hastings, S. P., Troy, W. C.
openaire +1 more source
Post-movement beta oscillations studied with linear estimation
Electroencephalography and Clinical Neurophysiology, 1998The application of surface laplacian and linear estimation methods to single trial EEG data was studied. EEG was recorded in 3 subjects during voluntary, self-paced extensions and flexions of the index finger. In each subject a post-movement beta synchronisation was found in specific frequency bands.
van Burik, M.J. +6 more
openaire +2 more sources
Gamma/beta oscillation and sensory gating deficit in schizophrenia
NeuroReport, 2004Sensory gating can be measured by the suppression of auditory evoked potentials in a paired-click paradigm. The normal gating of the P50 response to the second stimulus (S2) is impaired in many schizophrenic patients. Various in vitro and in vivo evoked potential paradigms have shown that a stimulus evokes early gamma frequency oscillation, which is ...
L Elliot, Hong +4 more
openaire +2 more sources
Transistor Beta-phase-shift Oscillator†
Journal of Electronics and Control, 1960ABSTRACT A new junction-transistor oscillator circuit is described. It makes use of the internal phase-shift of a transistor and only a single C-R section as the external phase-shifting network—advantage being taken of the low-input impedance of a common emitter junction transistor.
openaire +1 more source
Sensitivity of frontal beta oscillations to reward valence but not probability
Neuroscience Letters, 2015Reward feedback elicits a brief increase in power in the high-beta frequency range of the human electroencephalogram (EEG) over frontal areas of the scalp, but the functional role of this oscillatory activity remains unclear. An observed sensitivity to reward expectation (HajiHosseini, Rodríguez-Fornells, and Marco-Pallarés, 2012; [2]) suggests that ...
Azadeh, HajiHosseini, Clay B, Holroyd
openaire +2 more sources
Synchrony of Cortical Alpha and Beta Oscillations
2017We analyzed behavior of cortical alpha and beta oscillations during preparation of self-paced finger movement. Magnetic field patterns around the head were complex during rhythmic events, implying several simultaneously active sources. Oscillations in the cortical sites separated by a few centimeters were highly synchronized.
openaire +1 more source