Results 201 to 210 of about 2,287,439 (234)

Russia's Wartime Economy: Measuring Regional Inequalities From Outer Space

Journal of Regional Science, EarlyView.
ABSTRACT We study Russia's February 2022 full‐scale invasion of Ukraine as a natural experiment to determine how sudden disruptions to international market access reshape sub‐national economic inequalities. Using remotely‐sensed nighttime lights as a proxy for economic activity, we estimate the economic effects of the war at the national and regional ...
Irakli Barbakadze, Jan Fidrmuc, Martin Hulényi, Ketevani Kapanadze   +3 more
wiley   +1 more source

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Visual snow: Not so benign

Journal of Clinical Neuroscience, 2019
Visual snow is the perception of flickering dots throughout the entire visual field and occurs with other symptoms of dysfunctional central sensory processing. We describe a patient who presented with visual snow, illusory visual motion, photopsia, and reduced night vision.
Benson Chen
exaly   +3 more sources

Prevalence of visual snow syndrome in the UK

European Journal of Neurology, 2020
Background and purposeVisual snow syndrome is a recently described condition of unknown prevalence. We investigated the prevalence in a representative population sample from the UK and tested the hypothesis that visual snow syndrome is associated with young age, headache, tinnitus and mood impairment.MethodsUsing a crowdsourcing platform, we recruited ...
Daniel Kondziella
exaly   +4 more sources

Visual snow: A thalamocortical dysrhythmia of the visual pathway?

Journal of Clinical Neuroscience, 2016
In this paper we review the visual snow (VS) characteristics of a case cohort of 32 patients. History of symptoms and associated co-morbidities, ophthalmic examination, previous investigations and the results of intuitive colourimetry were collected and reviewed. VS symptoms follow a stereotypical description and are strongly associated with palinopsia,
Clare Fraser, Gordon Plant
exaly   +3 more sources

Evidence of dysfunction in the visual association cortex in visual snow syndrome [PDF]

Annals of Neurology, 2018
Patients with visual snow syndrome (VS) suffer from a debilitating continuous visual disturbance of unknown mechanism. The present study tested the hypothesis of dysfunctional visual processing using visual evoked potentials.
Eren, Ozan, Rauschel, Veronika, Ruscheweyh, Ruth, Straube, Andreas, Schankin, Christoph J.   +4 more
openaire   +4 more sources

Visual snow

Neurology, 2020
Visual snow is characterized by continuous visual disturbances in the form of countless tiny particles present in the entire visual field, often interpreted as television static. The visual disturbances are almost always accompanied by additional symptoms, including palinopsia, nyctalopia, photophobia, entoptic phenomenon, bilateral tinnitus ...
Gerrit L. J. Onderwater, Michel D. Ferrari   +1 more
openaire   +3 more sources

Illusions, hallucinations, and visual snow

2021
Illusions and hallucinations are commonly encountered in both daily life and clinical practice. In this chapter, we review definitions and possible underlying mechanisms of these phenomena and then review what is known about specific conditions that are associated with them, including ophthalmic causes, migraine, epilepsy, Parkinson's disease, and ...
Clare L, Fraser, Christian J, Lueck
openaire   +2 more sources

Natural course of visual snow syndrome: a long-term follow-up study [PDF]

Brain Communications, 2022
Visual snow syndrome is characterized by a continuous visual disturbance resembling a badly tuned analogue television and additional visual and non-visual symptoms causing significant disability.
Adrian Scutelnic, Francesca Puledda
exaly   +3 more sources

Visual Snow: Visual Misperception

Journal of Neuro-Ophthalmology, 2018
Background: Visual snow (VS) is a constant visual disturbance described as flickering dots occupying the entire visual field. Recently, it was characterized as the defining feature of a VS syndrome (VSS), which includes palinopsia, photophobia, photopsias, entoptic phenomena, nyctalopia, and tinnitus.
White, OB, Clough, M, McKendrick, AM, Fielding, J   +3 more
openaire   +3 more sources

Structural and functional footprint of visual snow syndrome [PDF]

Brain, 2020
Patients with visual snow syndrome suffer from a continuous pan-field visual disturbance, additional visual symptoms, tinnitus, and non-perceptional symptoms. The pathophysiology of visual symptoms might involve dysfunctional visual cortex.
Till Sprenger, Michael Eller
exaly   +3 more sources