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Nitric oxide modulates contrast suppression in a subset of mouse retinal ganglion cells.
Elife
January 2025
Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, Tübingen, Germany.
Neuromodulators have major influences on the regulation of neural circuit activity across the nervous system. Nitric oxide (NO) has been shown to be a prominent neuromodulator in many circuits and has been extensively studied in the retina. Here, it has been associated with the regulation of light adaptation, gain control, and gap junctional coupling, but its effect on the retinal output, specifically on the different types of retinal ganglion cells (RGCs), is still poorly understood.
View Article and Find Full Text PDFGABAergic amacrine cells balance biased chromatic information in the mouse retina.
Cell Rep
November 2024
Institute for Ophthalmic Research, University of Tübingen, 72076 Tübingen, Germany; Werner Reichardt Centre for Integrative Neuroscience, University of Tübingen, 72076 Tübingen, Germany; Department of Ophthalmology & Visual Sciences, University of Illinois, Chicago, IL 60603, USA. Electronic address:
The retina extracts chromatic information present in an animal's environment. How this information is processed in the retina is not well understood. In the mouse, chromatic information is not collected equally throughout the retina.
View Article and Find Full Text PDFA chromatic feature detector in the retina signals visual context changes.
Elife
October 2024
Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany.
The retina transforms patterns of light into visual feature representations supporting behaviour. These representations are distributed across various types of retinal ganglion cells (RGCs), whose spatial and temporal tuning properties have been studied extensively in many model organisms, including the mouse. However, it has been difficult to link the potentially nonlinear retinal transformations of natural visual inputs to specific ethological purposes.
View Article and Find Full Text PDFNew results in stereopsis and Listing's law.
Sci Rep
September 2024
Professor Emeritus, Department of Mathematics and Statistics, University of Houston-Downtown, One Main Street, Houston, TX, 77002, USA.
Human eyes' optical components are misaligned. This study presents comprehensive geometric constructions in the binocular system, with the eye model incorporating the fovea that is displaced from the posterior pole and the lens that is tilted away from the eye's optical axis. It extends their previously considered horizontal misalignment with the vertical components.
View Article and Find Full Text PDFSpace Quasi-Periodic Steady Euler Flows Close to the Inviscid Couette Flow.
Arch Ration Mech Anal
September 2024
Dipartimento di Matematica "Federigo Enriques", Università degli Studi di Milano, Via Cesare Saldini 50, 20133 Milan, Italy.
We prove the existence of steady stream functions, solutions for the Euler equation in a vorticity-stream function formulation in the two dimensional channel . These solutions bifurcate from a prescribed shear equilibrium near the Couette flow, whose profile induces finitely many modes of oscillations in the horizontal direction for the linearized problem. Using a Nash-Moser implicit function iterative scheme, near such equilibrium we construct small amplitude, space reversible stream functions, slightly deforming the linear solutions and retaining the horizontal quasi-periodic structure.
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