Results 21 to 30 of about 130,788 (348)
Methods for Examining Electrophysiological Coherence in Epileptic Networks
Frontiers in Neurology, 2013 Epilepsy may reflect a focal abnormality of cerebral tissue, but the generation of seizures typically involves propagation of abnormal activity through cerebral networks.
Jasmine eSong +8 more
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Coalescence of geodesics in exactly solvable models of last passage percolation [PDF]
Journal of Mathematics and Physics, 2017 Coalescence of semi-infinite geodesics remains a central question in planar first passage percolation. In this paper we study finer properties of the coalescence structure of finite and semi-infinite geodesics for exactly solvable models of last passage ...
Riddhipratim Basu +2 more
semanticscholar +1 more source
Learning and the Development of Contexts for Action
Frontiers in Human Neuroscience, 2011 Neurophysiological evidence from animal studies suggests that frontal corticolimbic systems support early stages of learning, whereas later stages involve context representation formed in hippocampus and posterior cingulate cortex.
Phan eLuu +7 more
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Simple Closed Quasigeodesics on Tetrahedra
Information, 2022 Pogorelov proved in 1949 that every convex polyhedron has at least three simple closed quasigeodesics. Whereas a geodesic has exactly a π surface angle to either side at each point, a quasigeodesic has at most a π surface angle to either side at each ...
Joseph O’Rourke, Costin Vîlcu
doaj +1 more source
Time-Course of Cortical Networks Involved in Working Memory
Frontiers in Human Neuroscience, 2014 Working memory (WM) is one of the most studied cognitive constructs. Although many neuroimaging studies have identified brain networks involved in WM, the time course of these networks remains unclear.
Phan eLuu +8 more
doaj +1 more source
Circular Geodesics Stability in a Static Black Hole in New Massive Gravity
Galaxies, 2020 We study the existence and stability of circular geodesics in a family of asymptotically AdS static black holes in New Massive Gravity theory. We show that the mathematical sign of the hair parameter determines the existence of such geodesics.
Andrés Aceña +2 more
doaj +1 more source
Geodesics for the Painlevé–Gullstrand Form of Lense–Thirring Spacetime
Universe, 2022 Recently, the current authors have formulated and extensively explored a rather novel Painlevé–Gullstrand variant of the slow-rotation Lense–Thirring spacetime, a variant which has particularly elegant features—including unit lapse, intrinsically flat ...
Joshua Baines +3 more
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Homogeneous manifolds whose geodesics are orbits. Recent results and some open problems [PDF]
Irish Mathematical Society Bulletin, 2017 A homogeneous Riemannian manifold $(M=G/K, g)$ is called a space with homogeneous geodesics or a $G$-g.o. space if every geodesic $\gamma (t)$ of $M$ is an orbit of a one-parameter subgroup of $G$, that is $\gamma(t) = \exp(tX)\cdot o$, for some non zero
A. Arvanitoyeorgos
semanticscholar +1 more source
Brain substrates of behavioral programs associated with self-regulation
Frontiers in Psychology, 2010 The present paper proposes that four neuromodulator systems underpin highly generalized behavioral sets, but each targets either dorsomedial or ventrolateral cortical systems, where it produces its effects in either a proactive or reactive orientation to
Mattie Tops +8 more
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Co-accelerated particles in the C-metric [PDF]
, 2000 With appropriately chosen parameters, the C-metric represents two uniformly accelerated black holes moving in the opposite directions on the axis of the axial symmetry (the z-axis). The acceleration is caused by nodal singularities located on the z-axis.
A Pravdová +9 more
core +2 more sources