Results 61 to 70 of about 861,931 (295)

Coordinated optimization of visual cortical maps : 2. Numerical studies [PDF]

, 2012
In the juvenile brain, the synaptic architecture of the visual cortex remains in a state of flux for months after the natural onset of vision and the initial emergence of feature selectivity in visual cortical neurons. It is an attractive hypothesis that
Heide, Dominik, Justin C. Crowley (120185), Wolf, Fred, Dominik Heide, Fred Wolf, Matthias Kaschube, Löwel, Siegrid, Crowley, Justin C., Kaschube, Matthias, Dominik Heide (120181), Justin C Crowley, Reichl, Lars, Lars Reichl, Lars Reichl (120178), Siegrid Löwel, Siegrid Löwel (53603), Fred Wolf (120189), Matthias Kaschube (120187)   +17 more
core   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

A Comparison between Effect of Viewing Text on Computer Screen and iPad® on Visual Symptoms and Functions

Siriraj Medical Journal, 2017
Objective: To compare the ocular symptoms following sustained near vision between laptop computer and iPad®. Methods: Forty normal subjects read text from a laptop computer screen and an iPad® screen for a continuous 20 min period.
Pittaya Phamonvaechavan
doaj   +3 more sources

Clinical Characteristics of Ocular Mucous Membrane Pemphigoid: A Systematic Review and Meta-Analysis

Purpose: To synthesize the evidence and generate a combined weighted measure on the frequency of ocular manifestations of mucous membrane pemphigoid (OMMP).
Romero-Osorio M.J., Oliver-Hernández M.V., Romero-Santos S., Barragán A.M., Pardo-Pizza D., de-la-Torre A., Cifuentes-González C., Parra-Tanoux D., Bocanegra-Oyola N.   +8 more
core   +1 more source

Temporal Interference Stimulation of Centromedian‐Parafascicular Complex in Disorders of Consciousness: A Pilot Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Treatment of disorders of consciousness (DoC) remains a major clinical challenge, and noninvasive, targeted modulation of deep brain structures has emerged as a promising therapeutic strategy. We aimed to evaluate the feasibility/safety and preliminary effects of thalamic temporal interference stimulation (TIS) targeting centromedian‐
Gengyao Hu, Changgeng Song, Dianwei Wu, Xiaoqian Niu, Jianmin Hao, Lijuan Liu, Xiaogang Kang, Wen Jiang   +7 more
wiley   +1 more source

Synergistic convergence and split pons in horizontal gaze palsy and progressive scoliosis in two sisters

Indian Journal of Ophthalmology, 2011
Synergistic convergence is an ocular motor anomaly where on attempted abduction or on attempted horizontal gaze, both the eyes converge. It has been related to peripheral causes such as congenital fibrosis of extraocular muscles (CFEOM), congenital ...
Jain Nitin, Jethani Jitendra, Narendran Kalpana, Kanth L   +3 more
doaj  

“Pattern of ocular morbidities among pilgrims attending religious mega festive event-'Kumbh Mela 2019' at Prayagraj, India”

Journal of Family Medicine and Primary Care, 2020
Background: Globally, ocular morbidities are one of the most underdiagnosed, underreported, and undertreated public health concern. Among estimated 39 billion blind in world, India shares major proportions, with majority of them living in rural ...
Sanjeev K Mittal, Neeraj K Saraswat, Sweety Kumari, Rimpi Rana, Shrinkhal, Siddharth Patel, Vinita Gupta, Ajai Agrawal, Anupam Singh, Neeti Gupta, Ramanuj Samanta, Santosh Kumar, Ajeet S Bhadoria, Anjana Singh, Ravi Kant   +14 more
doaj   +1 more source

Convergence on VOR Gain: Normal and Abnormal

, 2022
Vestibular compensatory eye movements provide a mechanism to maintain steady fixation on targets during head movement. The anatomic pathways that mediate a normal horizontal vestibulo-ocular reflex (h-VOR), when lesioned, cause spontaneous nystagmus ...
Ammar Ujjainwala; Cal Dewar; Laurel Donaldson; Caroline Rayburn; Emily Buenting; Jordan Boyle; Jorge Kattah
core  

Global Rather Than Vertical‐Selective Saccadic Abnormalities in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To test whether vertical saccades are preferentially affected in Progressive Supranuclear Palsy (PSP). Methods PSP patients (n = 24) were compared to age‐matched controls (n = 94) and two degenerative groups (Alzheimer's disease, n = 20; Lewy body disease, n = 50).
Duy Duan Nguyen, Mark Paine, Soohyun Lee, Amir Fazlollahi, Baibin (Ben) Wang, John D. O'Sullivan, Peter J. Nestor   +6 more
wiley   +1 more source

Posterior Disconnection Syndrome in Early‐Stage Adult‐Onset Cerebral Adrenoleukodystrophy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Adult‐onset cerebral adrenoleukodystrophy is potentially treatable but often difficult to recognize before advanced cerebral involvement. Herein, we describe three men with early‐stage disease who initially presented with subtle visual complaints rather than subcortical dementia. Targeted neuropsychological testing revealed higher‐order visual
Kazuto Katsuse, Takashi Matsukawa, Yumiko Nakamura, Kazuo Kakinuma, Shoko Ota, Ryo Hara, Saki Nakashima, Kaoru Ito, Yutaro Nakamori, Toshiyuki Kakumoto, Masashi Hamada, Shigenori Kanno, Kyoko Suzuki, Tatsushi Toda   +13 more
wiley   +1 more source