Results 81 to 90 of about 3,408,895 (339)

Isotropic magnetometry with simultaneous excitation of orientation and alignment CPT resonances

, 2010
Atomic magnetometers have very high absolute precision and sensitivity to magnetic fields but suffer from a fundamental problem: the vectorial or tensorial interaction of light with atoms leads to "dead zones", certain orientations of magnetic field ...
A. Ben-Kish, A. David, E. Friis-Christensen, M. V. Romalis   +3 more
core   +1 more source

Age-related deterioration of rod vision in mice [PDF]

, 2010
Even in healthy individuals, aging leads to deterioration in visual acuity, contrast sensitivity, visual field, and dark adaptation. Little is known about the neural mechanisms that drive the age-related changes of the retina and, more specifically ...
Crouch, Rosalie K, Fan, Jie, Kefalov, Vladimir J, Kolesnikov, Alexander V   +3 more
core   +2 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

The Measurement of Contrast Sensitivity in Near Vision: The Use of a Digital System vs. a Conventional Printed Test

Technologies
In recent years, there has been intense development of digital diagnostic tests for vision. All of these tests must be validated for clinical use.
Kevin J. Mena-Guevara, David P. Piñero, María José Luque, Dolores de Fez   +3 more
doaj   +1 more source

Evaluation of Color Contrast Sensitivity in Dyslexic Children

مجله پژوهش در علوم توانبخشی, 2014
Introduction: Although there is a consensus about the importance of vision perception in reading, its role in development of dyslexia is highly debated. In order to understand the relationship between dyslexia and disorders of visual perception, we have ...
Alireza Mohamadi, Ebrahim Jafarzadehpur
doaj   +1 more source

Comparison between gadolinium-enhanced 2D T1-weighted gradient-echo and spin-echo sequences in the detection of active multiple sclerosis lesions on 3.0T MRI [PDF]

, 2017
Objectives To compare the sensitivity of enhancing multiple sclerosis (MS) lesions in gadolinium-enhanced 2D T1-weighted gradient-echo (GRE) and spin-echo (SE) sequences, and to assess the influence of visual conspicuity and laterality on detection of
Alcaide, Paula, Auger, Cristina, Aymerich Martínez, Francisco Javier, Corral Gámez, Juan Francisco, Huerga, Elena, Mitjana, Raquel, Montalban, Xavier, Pareto Onghena, Deborah, Rovira, Alex, Sastre Garriga, Jaume   +9 more
core   +2 more sources

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source

Evaluation of contrast sensitivity in visually impaired individuals using K-CS test. A novel smartphone-based contrast sensitivity test-Design and validation.

PLoS ONE
BackgroundTo describe the development and investigate the accuracy of a novel smartphone-based Contrast Sensitivity (CS) application, the K-CS test.MethodsA total of 67 visually impaired and 50 normal participants were examined monocularly using the ...
Vasileios Karampatakis, Eleni P Papadopoulou, Stavroula Almpanidou, Leonidas Karamitopoulos, Diamantis Almaliotis   +4 more
doaj   +3 more sources

Visual acuity and contrast sensitivity of adult zebrafish

Frontiers in Zoology, 2012
Background The aim of this study was to evaluate the visual acuity of adult zebrafish by assessing the optokinetic reflex. Using a modified commercially available optomotor device (OptoMotry®), virtual three-dimensional gratings of variable spatial ...
Tappeiner Christoph, Gerber Simon, Enzmann Volker, Balmer Jasmin, Jazwinska Anna, Tschopp Markus   +5 more
doaj   +1 more source

Mitochondrial fatty acid oxidation is stimulated by red light irradiation

FEBS Letters, EarlyView.
Light at different wavelengths has distinct effects on keratinocyte viability and metabolism. UVA light abrogates metabolic fluxes. Blue and green light have no effect on metabolic fluxes, while red light enhanced oxidative phosphorylation by promoting fatty acid oxidation. Keratinocytes are the primary constituents of sunlight‐exposed epidermis.
Manuel Alejandro Herrera, Camille C. Caldeira da Silva, Maiza Von Dentz, Mauricio S. Baptista, Alicia J. Kowaltowski   +4 more
wiley   +1 more source