18 papers · ranked by Valyu relevance
Jafar Doostmohammadi, Marc Alwin Gieselmann, Jochem van Kempen, Reza Lashgari + 2 more
Sharp-wave ripples (SWRs) are highly synchronous neuronal activity events. They have been predominantly observed in the hippocampus during offline states such as pause in exploration, slow-wave sleep and quiescent wakefulness. SWRs have been linked to memory consolidation, spatial navigation, and spatial…
Wilhelm Braun, Raoul-Martin Memmesheimer, Daniel Bush
Hippocampal sharp wave/ripple oscillations are a prominent pattern of collective activity, which consists of a strong overall increase of activity with superimposed (140 − 200 Hz) ripple oscillations. Despite its prominence and its experimentally demonstrated importance for memory consolidation, the mechanisms…
ZHENG Zishuo
The hippocampus is key to memory encoding, consolidation, and retrieval. Previous work shows that neurons in the hippocampus fire in sequence to encode spatial information. The same group of cells will replay in memory consolidation, coupled with ripples, spindle, and slow waves. As for episodic memory, engram cells…
Adrian Aleman-Zapata, Melisa Maidana Capitan, Anumita Samanta, Pelin Özsezer + 4 more
'Pelin Özsezer' 'Kopal Agarwal' 'Tugdual Adam' 'Abdelrahman Rayan' 'Lisa Genzel'] Title: Summary Hippocampal ripples project reactivated memories to many brain areas, and recently it has been proposed that different types of ripples exist whose information content is influenced by different regions. Utilizing a…
Nicholas Paleologos, Mihály Vöröslakos, Joaquin Gonzalez, Anna Maslarova + 3 more
Monitoring representative fractions of neurons from multiple brain circuits in behaving animals is necessary for understanding how different brain regions interact. Using multishank, high-density recording silicon probes (up to 1,024 sites), we describe the main characteristic LFP patterns in the hippocampus, including…
Anna Maslarova, Jiyun N Shin, Andrea Navas-Olive, Mihály Vöröslakos + 5 more
Hippocampal sharp-wave ripples (SPW-Rs) are high-frequency oscillations critical for memory consolidation in mammals. Despite extensive characterization in rodents, their application as biomarkers to track and treat memory dysfunction in humans is limited by coarse spatial sampling, interference from interictal…
Bruno Monteiro de Sousa, Eliezyer Fermino de Oliveira, Ikaro Jesus da Silva Beraldo, Rafaela Schuttenberg Polanczyk + 2 more
Sharp wave-ripples (SWRs, 100-250 Hz) are oscillatory events extracellularly recorded in the CA1 subfield of the hippocampus during sleep and quiet wakefulness. SWRs are thought to be involved in the dialogue between the hippocampus and cortical regions to promote memory consolidation during sleep and memory-guided…
Robson Scheffer-Teixeira, Adriano Tort
Sharp-wave ripples (SWRs) are hippocampal network oscillations associated with memory consolidation. They are characterized by the co-occurrence of fast and slow field potentials across CA1 layers: the fast-frequency oscillations, known as ripples, are prominent in the pyramidal cell layer, where they coincide with…
Yyanis Johnson-Llambias, Philippe H. Trinh
In the study of low-speed or low-Froude flows of a potential gravity-driven fluid past a wave-generating object, the traditional asymptotic expansion in powers of the Froude number predicts a waveless free-surface at every order. This is due to the fact that the waves are, in fact, exponentially small and…
A. Mansar, M. R. Turner, T. J. Bridges, F. Dias
The mechanism for the emergence of breaking water waves in deep water, based on the superharmonic instability of periodic Stokes waves, is tested for the effect of real-world perturbations (dissipation, approximation error, changes in depth, non-zero air density, fluctuations in wave and frame speed). An implicit…
Adel H. Alameh
In its broadest sense the term "bent wave rays" hints at light or electromagnetic waves bending in a strong gravitational field or in their progress through a transparent medium of nonuniform index of refraction. However, there are instances where curved wave rays are observed as a result of the superposition of two or…
Taiga Kanehira, James Steer, Laura-Beth Jordan, Shaun Fraser + 3 more
The deterministic reproduction of complex 3D wave fields remains a significant challenge in ocean engineering. This study proposes a novel methodology for drawing arbitrary 2D curves and 3D volumetric shapes on a water surface using transient multi-directional focused waves. To overcome the limitations of conventional…
Abhinav Priyadarshi, Paul Prentice, Dmitry Eskin, Peter D. Lee + 1 more
'Iakovos Tzanakis'] Title: Graphical abstract
Ivan Redor, Hervé Michallet, Nicolas Mordant, Éric Barthélemy
We analyze a set of bidirectional wave experiments in a linear wave flume of which some are conducive to integrable turbulence. In all experiments the wavemaker forcing is sinusoidal and the wave motion is recorded by seven high-resolution side-looking cameras. The periodic scattering transform is implemented and power…
Martin A. Erinin, Xinan Liu, Sophie D. Wang, James H. Duncan
An experimental study of the dynamics and droplet production in three mechanically generated plunging breaking waves is presented in this two-part paper. In the present paper (Part 1), the dynamics of the three breakers are studied through measurements of the evolution of their free surface profiles during 10 repeated…
Forrest L. Anderson
Huygens' Principle (1678) implies that every point on a wave front serves as a source of secondary wavelets, and the new wave front is the tangential surface to all the secondary wavelets. But two problems arise: portions of wavelets that exist outside of the new wave front combine to form a wake. Also there are two…
Ashley Fidler, Yen-Cheng Lin, James Gaynor, William McCurdy + 3 more
Nonlinear spectroscopies can disentangle spectra that are congested due to inhomogeneous broadening. In conjunction with theoretical calculations, attosecond extreme ultraviolet (XUV) four-wave mixing (FWM) spectroscopy is utilized here to probe the dynamics of autoionizing, inner valence excited Rydberg states of the…
Eduardo A. Jagla, Alberto G. Rojo
Rainbows and boat wakes may seem unrelated, but they share deep mathematical connections through ray folding, caustics, and Airy interference. This paper explores these principles, which are also relevant for explaining phenomena such as shimmering effects on the bottom of pools and twinkling stars. By revisiting…