Results 31 to 40 of about 138,211 (374)
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
doaj +1 more source
Geodesic measures of the landscape [PDF]
, 2006 We study the landscape models of eternal inflation with an arbitrary number of different vacua states, both recyclable and terminal. We calculate the abundances of bubbles following different geodesics. We show that the results obtained from generic time-
P. Lancaster, Vitaly Vanchurin
core +2 more sources
Characterizations of Morse Quasi-Geodesics via Superlinear Divergence and Sublinear Contraction [PDF]
Documenta Mathematica, 2016 We introduce and begin a systematic study of sublinearly contracting projections. We give two characterizations of Morse quasi-geodesics in an arbitrary geodesic metric space.
G. Arzhantseva +3 more
semanticscholar +1 more source
Integrability of Geodesics of Totally Geodesic Metrics [PDF]
, 2019 Analysis of the geodesics in the space of signature $(1,3)$ that splits in two-dimensional distributions resulting from the Weyl tensor eignespaces - hyperbolic and elliptic ones - described in [V. Lychagin, V. Yumaguzhin, \emph{Differential invariants and exact solutions of the Einstein equations}, Anal.Math.Phys.
Maria Ulan, Radoslaw Antoni Kycia
openaire +2 more sources
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
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
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
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
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
Transcranial electrical neuromodulation based on the reciprocity principle
Frontiers in Psychiatry, 2016 A key challenge in multi-electrode transcranial electrical stimulation (TES) or transcranial direct current stimulation (tDCS) is to find a current injection pattern that delivers the necessary current density at a target and minimizes it in the rest of ...
Mariano eFernandez Corazza +8 more
doaj +1 more source