Results 151 to 160 of about 125,410 (180)
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Metabolic Oscillations in β-Cells
Diabetes, 2002Whereas the mechanisms underlying oscillatory insulin secretion remain unknown, several models have been advanced to explain if they involve generation of metabolic oscillations in β-cells. Evidence, including measurements of oxygen consumption, glucose consumption, NADH, and ATP/ADP ratio, has accumulated to support the hypothesis that energy ...
Robert T, Kennedy +3 more
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2010
AbstractNeuromodulatory substances evoke beta2 oscillations in motor and secondary somatosensory cortex, that depend on gap junctions. In the latter case, the oscillations are only weakly dependent on synaptic transmission. Beta2 is most prominent in intrinsically bursting layer 5 pyramidal cells (some of which are expected to contribute to the ...
Roger D. Roger, Miles A. Whittington
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AbstractNeuromodulatory substances evoke beta2 oscillations in motor and secondary somatosensory cortex, that depend on gap junctions. In the latter case, the oscillations are only weakly dependent on synaptic transmission. Beta2 is most prominent in intrinsically bursting layer 5 pyramidal cells (some of which are expected to contribute to the ...
Roger D. Roger, Miles A. Whittington
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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
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Neutrino Oscillations, Neutrinoless Double Beta Decay
AIP Conference Proceedings, 1982We review the experimental evidence for neutrino mixing and neutrino mass. Searches for possible branches into heavy neutrinos do not reveal evidence for static mixing with branching ratios larger than 10−4 to 10−6. Similarly, neutrino oscillation experiments show no evidence for dynamic mixing in various oscillation channels.
F. Boehm +4 more
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Neural oscillations: beta band activity across motor networks
Current Opinion in Neurobiology, 2015Local field potential (LFP) activity in motor cortical and basal ganglia regions exhibits prominent beta (15-40Hz) oscillations during reaching and grasping, muscular contraction, and attention tasks. While in vitro and computational work has revealed specific mechanisms that may give rise to the frequency and duration of this oscillation, there is ...
Preeya, Khanna, Jose M, Carmena
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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.
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Beta-Barium Borate Optical Parametric Oscillator
1991Abstract : A Beta-Barium Borate Optical Parametric Oscillator (BBO OPO) has been constructed and shipped to the Army laboratory at White Sands. This OPO is a truly continuously tunable source with a very large spectral coverage. It is pumped at the third harmonic of Nd:YAG or 335 nm.
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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
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Neutrino oscillations and proton inverse beta decay
Journal of Physics G: Nuclear Physics, 1981Experimental results on the inverse beta decay of the proton are interpreted in terms of neutrino oscillations to set limits on the difference in (mass)2 and mixing angle of a two-neutrino system.
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GAMMA-BAND AND BETA-BAND CORTICAL OSCILLATIONS
1992ABSTRACT It is suggested that the oscillations thought to mediate important aspects of consciousness may have frequencies in the beta-band, rather than the gamma-band. Such oscillations are made possible by the reciprocal projections that appear to be a ubiquitous feature of cortical anatomy in higher mammals.
Rodney M.J. Cotterill, Claus Nielsen
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