Separating the control of moving and holding still in post-stroke arm paresis

Kavli Affiliate: Reza Shadmehr | Authors: Alkis M. Hadjiosif, Kahori Kita, Scott T. Albert, Robert A. Scheidt, Reza Shadmehr and John W. Krakauer | Summary: Moving and holding still have been posited to be under separate control regimes for both eye and arm movements. The paretic arm after stroke is notable for abnormalities both at […]


Continue.. Separating the control of moving and holding still in post-stroke arm paresis

Sex chromosome gene expression associated with vocal learning following hormonal manipulation in female zebra finches

Kavli Affiliate: Erich Jarvis | Authors: Matthew Davenport, Ha Na Choe, Hiroaki Matsunami and Erich D Jarvis | Summary: Zebra finches are sexually dimorphic vocal learners. Males learn to sing by imitating mature conspecifics, but females do not. Absence of song in females is associated with atrophy and apparent repression of several vocal learning brain […]


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A simple accurate way to model noise-seeded ultrafast nonlinear processes

Kavli Affiliate: Frank Wise | First 5 Authors: Yi-Hao Chen, Yi-Hao Chen, , , | Summary: Noise can play an important role in nonlinear pulse propagation. It is not only the origin of fluctuations in supercontinuum but can also determine the generated signal amplitude and phase, as seen in phenomena such as noise-seeded four-wave mixing […]


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Machine-Learning Analysis of Radiative Decays to Dark Matter at the LHC

Kavli Affiliate: Carlos E. M. Wagner | First 5 Authors: , , , , | Summary: The search for weakly interacting matter particles (WIMPs) is one of the main objectives of the High Luminosity Large Hadron Collider (HL-LHC). In this work we use Machine-Learning (ML) techniques to explore WIMP radiative decays into a Dark Matter […]


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Revealing EMRI/IMRI candidates with quasiperiodic ultrafast outflows

Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Michal Zajaček, Petra Suková, Vladimír Karas, Dheeraj R. Pasham, Francesco Tombesi | Summary: The first detection of the quasiperiodic ultrafast outflow in the ASASSN-20qc system was reported by Pasham et al. (2024). The outflow is revealed in the soft X-ray spectra as an absorption feature, which […]


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The $R$-Process Alliance: Enrichment of $r$-process Elements in a Simulated Milky Way-like Galaxy

Kavli Affiliate: Anna Frebel | First 5 Authors: Yutaka Hirai, Yutaka Hirai, , , | Summary: We study the formation of stars with varying amounts of heavy elements synthesized by the rapid neutron-capture process ($r$-process) based on our detailed cosmological zoom-in simulation of a Milky Way-like galaxy with an $N$-body/smoothed particle hydrodynamics code, ASURA. Most […]


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Conditional Motional Squeezing of an Optomechanical Oscillator Approaching the Quantum Regime

Kavli Affiliate: Nergis Mavalvala | First 5 Authors: Benjamin B. Lane, Benjamin B. Lane, , , | Summary: Squeezed mechanical states are a highly coveted resource for quantum-enhanced sensing and serve as a compelling platform for probing the interplay between gravity and quantum mechanics. It has been predicted that a mechanical oscillator can be prepared […]


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The Geometry of Concepts: Sparse Autoencoder Feature Structure

Kavli Affiliate: Max Tegmark | First 5 Authors: Yuxiao Li, Eric J. Michaud, David D. Baek, Joshua Engels, Xiaoqing Sun | Summary: Sparse autoencoders have recently produced dictionaries of high-dimensional vectors corresponding to the universe of concepts represented by large language models. We find that this concept universe has interesting structure at three levels: 1) […]


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Constraints on Long-Ranged Interactions Between Dark Matter and the Standard Model

Kavli Affiliate: Peter Graham | First 5 Authors: Zachary Bogorad, Peter Graham, Harikrishnan Ramani, , | Summary: Dark matter’s existence is known thanks to its gravitational interaction with Standard Model particles, but it remains unknown whether this is the only force present between them. While many searches for such new interactions with dark matter focus […]


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3D printed mesoporous superconductors with periodic order on three length scales and enhanced properties via block copolymer directed self-assembly

Kavli Affiliate: Ulrich B. Wiesner | First 5 Authors: Fei Yu, Fei Yu, , , | Summary: Solution-based soft matter self-assembly (SA) promises unique materials properties from approaches including additive manufacturing/three-dimensional (3D) printing. We report direct ink writing derived, hierarchically porous transition metal nitride superconductors (SCs) and precursor oxides, structure-directed by Pluronics-family block copolymer (BCP) […]


Continue.. 3D printed mesoporous superconductors with periodic order on three length scales and enhanced properties via block copolymer directed self-assembly