Results 201 to 210 of about 506,213 (249)
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Physiological Mechanisms of Focal Epileptogenesis
Epilepsia, 1985Summary: The key elements in the development of epileptogenesis appear to be the capacity of membranes in some (pacemaker) neurons to develop intrinsic burst discharges, the presence of disinhibition, and the proper excitatory synaptic circuitry. It is likely that the relative role of each of these processes will differ at different sites in the ...
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Focal Cerebral Ischemia: Mechanisms
2007Hypothermia can be neuroprotective when applied during or after focal cerebral ischemia. Its neuroprotective effect is especially robust in the laboratory where it has been shown to ameliorate many of the damaging effects of cerebral ischemia. Most laboratory research on therapeutic cooling in stroke models has been conducted in rodent models of ...
Hyung Soo Han, Midori A. Yenari
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Reliability of focal mechanism determination
Studia Geophysica et Geodaetica, 1981The fault plane solution determined by means of a computer algorithm, correlating the radiation pattern with the distribution of observations, was investigated from the point of view of its reliability. The maximum of the correlation function R corresponds to the optimum solution found by the computer.
Karel Klíma, Libuše Ruprechtová
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Mechanical Cues Direct Focal Adhesion Dynamics
2014Focal adhesions play a fundamental role in force sensing, which influences a variety of cellular processes and functions, particularly migration and the cell cycle. They consist of large macromolecular assemblies of proteins that associate with integrins, in order to serve as anchor points between the cell and the extracellular matrix.
Kristina, Haase +2 more
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Focal Epilepsies: Immunologic and Inflammatory Mechanisms
Seminars in Pediatric Neurology, 2014There is increasing evidence documenting activation of inflammatory processes in focal epilepsies. This review article summarizes current data regarding immune mediated inflammatory processes in patients with symptomatic partial epilepsies such as mesial temporal sclerosis, focal cortical dysplasia, and Rasmussen's encephalitis.
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Mechanisms of Disease: focal segmental glomerulosclerosis
Nature Clinical Practice Nephrology, 2005Focal segmental glomerulosclerosis (FSGS), a subtype of "idiopathic nephrotic syndrome", is not a single disease, but a lesion that initially affects the glomerulus followed by the tubulointerstitium and renal vessels. The term 'FSGS' does not accurately encompass the various pathologic features of the glomerulus, which are not always focal, segmental ...
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1961
It is shown that a system of forces consisting of three couples without moment introduces a cone of the second degree as the surface separating the compressions and dilatations as recorded at extended distances. This cone is the generalization of the pair of planes associated with a single couple with moment or with two couples without moment.
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It is shown that a system of forces consisting of three couples without moment introduces a cone of the second degree as the surface separating the compressions and dilatations as recorded at extended distances. This cone is the generalization of the pair of planes associated with a single couple with moment or with two couples without moment.
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Focal mechanism in the Apennines
Physics and Chemistry of the Earth, 1996Abstract This paper compares different source mechanism models that fit first onset amplitudes for a set of seismic events that occurred in the Apennines, Italy. We selected earthquakes of magnitude greater than 1.0 that match the criteria of appropriate instrumental coverage of the epicentral area, low localisation errors and high signal-to-noise ...
R. Rosini, F. Di Luccio, S. Barba
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Mechanisms of focal ventricular tachycardia in humans
Heart Rhythm, 2009In classifying ventricular arrhythmias, a fundamental distinction is made between focal and macroreentrant mechanisms. Focal arrhythmias demonstrate early activation at a particular site with centrifugal spread of the impulse from this site of origin. In contrast, macroreentrant rhythms involve contiguous but spatially distributed areas of activation ...
Steven M, Markowitz, Bruce B, Lerman
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Visual cortical mechanisms detecting focal orientation discontinuities
Nature, 1995Neurons in the primary visual cortex (V1) respond in well defined ways to stimuli within their classical receptive field, but these responses can be modified by stimuli overlying the surrounding area. For example patch-suppressed cells respond to gratings of a specific orientation within their classical receptive field, but the response diminishes if ...
Sillito, A. M. +4 more
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