14 papers · ranked by Valyu relevance
E. Mika Diamanti, Charu Bai Reddy, Sylvia Schröder, Tomaso Muzzu + 3 more
During navigation, the visual responses of neurons in primary visual cortex (V1) are modulated by the animal’s spatial position. Here we show that this spatial modulation is similarly present across multiple higher visual areas but largely absent in the main thalamic pathway into V1. Similar to hippocampus, spatial…
Jian Wang, Jun Liu, Shuhui Li, Yifan Zhao + 2 more
Orbital angular momentum (OAM), which describes tailoring the spatial physical dimension of light waves into a helical phase structure, has given rise to many applications in optical manipulation, microscopy, imaging, metrology, sensing, quantum science, and optical communications. Light beams carrying OAM feature two…
Yong Liang, Gang Wen, Jie Zhang, Simin Li + 6 more
Super-resolution structured illumination microscope (SR-SIM) has been established as a powerful tool for visualizing subcellular dynamics and studying organelle interactions in live cells. However, the interfering Gaussian beams result in a limited and nonuniform field of view (FOV) which hinders its application for…
Baiwei Liu, Anna C. Nobre, Freek van Ede
Covert spatial attention is associated with spatially specific modulation of neural activity as well as with directional biases in fixational eye-movements known as microsaccades. Recently, this link has been suggested to be obligatory, such that modulation of neural activity by covert spatial attention occurs only…
Zahra M. Aghajan, Diane Villaroman, Sonja Hiller, Tyler J. Wishard + 9 more
How the human brain supports accurate navigation of a learned environment has been an active topic of research for nearly a century^1–5^. In rodents, the theta rhythm within the medial temporal lobe (MTL) has been proposed as a neural basis for fragmenting incoming information and temporally organizing experiences and…
Wenjiao Chen, Chunsheng Li, Ze Yu, Peng Xiao
Sub-Nyquist sampling technology can ease the conflict between high resolution and wide swath in a synthetic aperture radar (SAR) system. However, the existing sub-Nyquist SAR imposes a constraint on the type of the observed scene and can only reconstruct the scene with small sparsity (i.e., number of significant…
Amrollah Amini, Homayoon Oraizi
Spatio-temporally modulated impedance surfaces can be good candidates for generation of radiating waves with arbitrary eigenstates by breaking momentum and energy conservations. Here, we present a theoretical framework based on the holographic technique and generalized Floquet-wave expansion to analyze…
Abderrahmen Trichili, Carmelo Rosales-Guzmán, Angela Dudley, Bienvenu Ndagano + 3 more
'Bienvenu Ndagano' 'Amine Ben Salem' 'Mourad Zghal' 'Andrew Forbes'] Mode division multiplexing (MDM) is mooted as a technology to address future bandwidth issues, and has been successfully demonstrated in free space using spatial modes with orbital angular momentum (OAM). To further increase the data transmission…
Mickael Mounaix, Nicolas K. Fontaine, David T. Neilson, Roland Ryf + 3 more
'Haoshuo Chen' 'Juan Carlos Alvarado-Zacarias' 'Joel Carpenter'] Lossless linear wave propagation is symmetric in time, a principle which can be used to create time reversed waves. Such waves are special “pre-scattered” spatiotemporal fields, which propagate through a complex medium as if observing a scattering process…
Oscar Woolnough, Kiefer J. Forseth, Patrick S. Rollo, Zachary J. Roccaforte + 1 more
Visual inputs to early visual cortex integrate with semantic, linguistic and memory inputs in higher visual cortex, in a manner that is rapid and accurate, and enables complex computations such as face recognition and word reading. This implies the existence of fundamental organizational principles that enable such…
Alan E Willner
The paper ‘Direct fiber vector eigenmode multiplexing transmission seeded by integrated optical vortex emitters’ by J Liu1 has successfully demonstrated that different data-carrying vector modes can be used to increase capacity through data-carrying, full-vectorial fiber eigenmode multiplexing communications in…
Michael Dumelle, Matt Higham, Jay M. Ver Hoef, A. K. M. Anisur Rahman
'A. K. M. Anisur Rahman'] spmodel is an R package used to fit, summarize, and predict for a variety spatial statistical models applied to point-referenced or areal (lattice) data. Parameters are estimated using various methods, including likelihood-based optimization and weighted least squares based on variograms.…
A. Llera, R. Chauvin, P. Mulders, J. Naaijen + 2 more
Functional connectivity between brain regions is modulated by cognitive states or experimental conditions. Such connectivity variations can be appreciated in covariance or correlation matrices obtained from fMRI data. A multivariate methodology that can capture fMRI connectivity maps in light of different experimental…
Davide Spalla, Alexis Dubreuil, Sophie Rosay, Remi Monasson + 1 more
The way grid cells represent space in the rodent brain has been a striking discovery, with theoret-ical implications still unclear. Differently from hippocampal place cells, which are known to encode multiple, environment-dependent spatial maps, grid cells have been widely believed to encode space through a single low…