Results 101 to 110 of about 45,495 (276)

The oscillatory response of the electroretinogram and neuronal adaptation

open access: yesActa Ophthalmologica, EarlyView.
Abstract After more than 50 years, there still remains a challenge and an interest to know more as well as extend and deepen our understanding of the small rapid wavelets, the oscillatory potentials (OPs), of the electroretinogram (ERG) and the neuronal adaptation of the retina.
Lillemor Wachtmeister, Anders Eklund
wiley   +1 more source

Lactate Changes Quantified by fMRS: A Meta‐Analysis

open access: yesNMR in Biomedicine, Volume 39, Issue 6, June 2026.
A systematic meta‐analysis of fMRS studies investigating brain lactate in healthy human subjects was conducted, with experiments categorized according to magnetic field strength, spectroscopic echo time, and task design. Across all included studies, lactate concentration was consistently reported to increase during functional stimulation, showing an ...
Luca Cairone   +3 more
wiley   +1 more source

Wavelength-Diverse Polarization Modulators for Stokes Polarimetry

open access: yes, 2010
Information about the three-dimensional structure of solar magnetic fields is encoded in the polarized spectra of solar radiation by a host of physical processes.
Asensio Ramos   +26 more
core   +1 more source

Finding Maximum Weight 2‐Packing Sets on Arbitrary Graphs

open access: yesNetworks, Volume 87, Issue 4, Page 404-427, June 2026.
ABSTRACT A 2‐packing set for an undirected, weighted graph G=(V,E,w) is a subset 𝒮⊆V such that any two vertices v1,v2∈𝒮 are not adjacent and have no common neighbors. The Maximum Weight 2‐Packing Set problem that asks for a 2‐packing set of maximum weight is NP‐hard.
Jannick Borowitz   +2 more
wiley   +1 more source

Multimodal Optical Imaging and Modulation with Simultaneous Electrophysiology Through Smart Dura in Non‐Human Primates

open access: yesAdvanced Science, Volume 13, Issue 25, 4 May 2026.
This study demonstrates multimodal integration in non‐human primates, combining large‐scale, high‐density electrophysiology using Smart Dura with optical techniques such as multiphoton imaging (MPI), photothrombotic lesioning, optical coherence tomography angiography (OCTA), wide‐field intrinsic signal optical imaging (ISOI), and optogenetics.
Nari Hong   +10 more
wiley   +1 more source

Dual‐Wavelength Switchable Focusing via a Fabry‐Pérot Resonance‐Enabled Hydrogel Metalens

open access: yesAdvanced Physics Research, Volume 5, Issue 5, May 2026.
A hydrogel metalens is demonstrated for dual‐wavelength switchable focusing based on Fabry‐Pérot resonance. Under the low relative humidity, the metalens exclusively focuses light with a resonance wavelength of 470 nm and directly reflects light of other wavelengths.
Xiaofeng Dong   +10 more
wiley   +1 more source

Giant Birefringence of Periodic Dielectric Waveguides

open access: yesIEEE Photonics Journal, 2011
The giant (Δn >; 1.5) and broadband achromatic birefringence is realized by periodic dielectric waveguides (PDWs), which benefit from low loss transmission, compact size, and simple structure.
Wenfu Zhang   +3 more
doaj   +1 more source

Metalens‐Enabled Twisted Chromatic Dispersion

open access: yesAdvanced Physics Research, Volume 5, Issue 5, May 2026.
We successfully demonstrate visible broadband twisted dispersion metalenses. As a proof of concept, we realized two distinct devices: the conical helical and the spring‐like dispersion‐controlled metalenses. These results rigorously validate the universality of our approach in customizing arbitrary continuous 3D dispersion trajectories, thereby ...
Shiyu Zheng   +3 more
wiley   +1 more source

Achromatic gantry design using fixed-field spiral combined-function magnets

open access: diamond, 2023
Robin Tesse   +5 more
openalex   +1 more source

Black in Impressionism and Post‐Impressionism: Art, Color Vision, and Psychophysics

open access: yesColor Research &Application, Volume 51, Issue 3, May/June 2026.
Black has engendered controversy in 19th Century color theory and in Impressionist and Post‐Impresssionist painting. The neural mechanisms of blackness perception are being revealed through contemporary psychophysics. ABSTRACT From Paleolithic cave art to modern abstraction, artists have used black not merely as a neutral tone, but as a powerful ...
John S. Werner
wiley   +1 more source

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