keyword
MENU ▼
Read by QxMD icon Read
search

Ocular motor

keyword
https://www.readbyqxmd.com/read/29741916/test-performance-and-test-retest-reliability-of-the-vestibular-ocular-motor-screening-and-king-devick-test-in-adolescent-athletes-during-a-competitive-sport-season
#1
Phillip R Worts, Philip Schatz, Scott O Burkhart
BACKGROUND: The Vestibular/Ocular Motor Screening (VOMS) and King-Devick (K-D) test are tools designed to assess ocular or vestibular function after a sport-related concussion. PURPOSE: To determine the test-retest reliability and rate of false-positive results of the VOMS and K-D test in a healthy athlete sample. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: Forty-five healthy high school student-athletes (mean age, 16...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29740388/central-lesions-with-selective-semicircular-canal-involvement-mimicking-bilateral-vestibulopathy
#2
REVIEW
Luke Chen, G Michael Halmagyi
Bilateral vestibulopathy (BVP), which is due to peripheral lesions, may selectively involve certain semicircular canal (SCC). Recent eye movement recordings with search coil and video head impulse test (HIT) have provided insight in central lesions that can cause bilateral and selective SCC deficit mimicking BVP. Since neurological signs or ocular motor deficits maybe subtle or absent, it is critical to recognize central lesions correctly since there is prognostic and treatment implication. Acute floccular lesions cause bilateral horizontal SCC (HC) impairment while leaving vertical SCC function unaffected...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29707228/multiple-sclerosis-executive-dysfunction-task-switching-and-the-role-of-attention
#3
M Clough, P Foletta, A N Frohman, D Sears, A Ternes, O B White, J Fielding
Background: It has been suggested that switching ability might not be affected in multiple sclerosis (MS) as previously thought; however, whether this is true under more 'real-world' conditions when asymmetry in task difficulty is present has not been ascertained. Objective: The objective of this paper is to examine the impact of task difficulty asymmetry on task switching ability in MS. Method: An ocular motor (OM) paradigm that interleaves the simple task of looking towards a target (prosaccade, PS) with the cognitively more difficult task of looking away from a target (antisaccade, PS) was used...
April 2018: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/29706930/a-preliminary-report-on-brain-derived-extracellular-vesicle-as-novel-blood-biomarkers-for-sport-related-concussions
#4
Keisuke Kawata, Masato Mitsuhashi, Randy Aldret
The purpose of the study was to test the utility of unique panel of blood biomarkers as a means to reflect one's recovery process after sport-related neurotrauma. We established a panel of biomarkers that reacted positive with CD81 (extracellular vesicle marker) and various neuron- and glia-specific antigens [e.g., neurofilament light polypeptide (NF-L), tau, synaptosome-associated protein 25 (SNAP25), glial fibrillary acidic protein, and myelin basic protein]. We first evaluated test-retest reliabilities of brain-derived exosome markers, followed by an application of these markers in eight professional ice hockey players to detect cumulative neuronal burden from a single ice hockey season...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29704947/drowsiness-measures-for-commercial-motor-vehicle-operations
#5
Amy R Sparrow, Cynthia M LaJambe, Hans P A Van Dongen
Timely detection of drowsiness in Commercial Motor Vehicle (C MV) operations is necessary to reduce drowsiness-related CMV crashes. This is relevant for manual driving and, paradoxically, even more so with increasing levels of driving automation. Measures available for drowsiness detection vary in reliability, validity, usability, and effectiveness. Passively recorded physiologic measures such as electroencephalography (EEG) and a variety of ocular parameters tend to accurately identify states of considerable drowsiness, but are limited in their potential to detect lower levels of drowsiness...
April 25, 2018: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29700284/mutation-of-ipo13-causes-recessive-ocular-coloboma-microphthalmia-and-cataract
#6
Xiu-Feng Huang, Lue Xiang, Wan Cheng, Fei-Fei Cheng, Kai-Wen He, Bo-Wen Zhang, Si-Si Zheng, Ru-Yi Han, Yi-Han Zheng, Xiao-Tao Xu, Huan-Yun Yu, Wenjuan Zhuang, Yuk Fai Leung, Zi-Bing Jin
Ocular coloboma is a developmental structural defect of the eye that often occurs as complex ocular anomalies. However, its genetic etiology remains largely unexplored. Here we report the identification of mutation (c.331C>T, p.R111C) in the IPO13 gene in a consanguineous family with ocular coloboma, microphthalmia, and cataract by a combination of whole-exome sequencing and homozygosity mapping. IPO13 encodes an importin-B family protein and has been proven to be associated with the pathogenesis of coloboma and microphthalmia...
April 27, 2018: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/29696497/cerebellar-ataxia-neuropathy-vestibular-areflexia-syndrome-canvas-with-chronic-cough-and-preserved-muscle-stretch-reflexes-evidence-for-selective-sparing-of-afferent-ia-fibres
#7
Jon Infante, Antonio García, Karla M Serrano-Cárdenas, Rocío González-Aguado, José Gazulla, Enrique M de Lucas, José Berciano
The aim of this study was to describe five patients with cerebellar ataxia, neuropathy and vestibular areflexia syndrome (CANVAS) with chronic cough and preserved limb muscle stretch reflexes. All five patients were in the seventh decade of age, their gait imbalance having been initiated in the fifth decade. In four patients cough antedated gait imbalance between 15 and 29 years; cough was spasmodic and triggered by variable factors. Established clinical picture included severe hypopallesthesia predominating in the lower limbs with postural imbalance, and variable degree of cerebellar axial and appendicular ataxia, dysarthria and horizontal gaze-evoked nystagmus...
April 25, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29691705/retinal-dysfunction-in-a-presymptomatic-patient-with-huntington-s-disease
#8
Jonelle Knapp, Dean A VanNasdale, Keith Ramsey, Julie Racine
PURPOSE: Huntington's disease (HD) is an autosomal dominant, neurodegenerative disorder characterized by progressive motor dysfunction, cognitive decline, and psychiatric disturbances. Studies have shown retinal abnormalities in patients and mouse models with HD; however, to our knowledge, no prior research papers evaluated retinal structure and function in a presymptomatic patient with HD. The aim of this report is to present a case of retinal dysfunction in a presymptomatic patient with HD...
April 24, 2018: Documenta Ophthalmologica. Advances in Ophthalmology
https://www.readbyqxmd.com/read/29687086/vertical-diplopia-and-oscillopsia-due-to-midbrain-keyhole-aqueduct-syndrome-associated-with-severe-cough
#9
Angela Jinsook Oh, Bryan Alexander Lanzman, Yaping Joyce Liao
Purpose: Midline structural defects in the neural axis can give rise to neuro-ophthalmic symptoms. We report a rare case of keyhole aqueduct syndrome presenting after two years of severe cough due to gastroesophageal reflux disease. Observations: A 58-year-old woman with a 2-year history of daily, severe cough presented to the neuro-ophthalmology clinic with progressive diplopia and oscillopsia. Examination revealed a 1-2 Hz down-beating nystagmus in primary gaze that worsened with left, right, and down gazes...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29680227/cerebellar-transcranial-direct-current-stimulation-interacts-with-bdnf-val66met-in-motor-learning
#10
Rick van der Vliet, Zeb D Jonker, Suzanne C Louwen, Marco Heuvelman, Linda de Vreede, Gerard M Ribbers, Chris I De Zeeuw, Opher Donchin, Ruud W Selles, Jos N van der Geest, Maarten A Frens
BACKGROUND: Cerebellar transcranial direct current stimulation has been reported to enhance motor associative learning and motor adaptation, holding promise for clinical application in patients with movement disorders. However, behavioral benefits from cerebellar tDCS have been inconsistent. OBJECTIVE: Identifying determinants of treatment success is necessary. BDNF Val66Met is a candidate determinant, because the polymorphism is associated with motor skill learning and BDNF is thought to mediate tDCS effects...
April 11, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29675271/the-relationship-between-peripheral-nerve-conduction-velocity-and-ophthalmological-findings-in-type-2-diabetes-patients-with-early-diabetic-retinopathy
#11
Azusa Ito, Hiroshi Kunikata, Masayuki Yasuda, Shojiro Sawada, Keiichi Kondo, Chihiro Satake, Kazuki Hashimoto, Naoko Aizawa, Hideki Katagiri, Toru Nakazawa
Purpose: Nerve conduction velocity (NCV) is an indicator of neuronal damage in the distal segment of the peripheral nerves. Here, we determined the association between NCV and other systemic and ocular clinical findings, in type 2 diabetes patients with early diabetic retinopathy (DR). Methods: This study included 42 eyes of 42 type 2 diabetes patients (median age: 54 years) with no DR or with mild nonproliferative DR. Standard statistical techniques were used to determine associations between clinical findings...
2018: Journal of Ophthalmology
https://www.readbyqxmd.com/read/29659177/the-anatomical-relationships-of-the-ocular-motor-nerves-with-an-emphasis-on-surgical-anatomy-of-the-orbit
#12
Nihal Apaydin, Simel Kendir, S Tuna Karahan
The surgical procedures directed to the orbit are invariably reported to be one of the most challenging procedures of the neurosurgery and it is very important to take measures to protect the ocular nerves. Many researchers have tried to identify safe approaches or safe regions in the orbit but the suggestions and results vary among published studies. The ocular motor nerves are under risk of injury during various approaches to the orbit. Simple but careful attention to potential variations in the origin and anatomical course of the ocular nerves and their relationships to the orbit may help to define "safe zones" during various approaches, thus help to enhance clinical outcomes...
April 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29659164/development-and-functional-organization-of-the-cranial-nerves-in-lampreys
#13
Manuel A Pombal, Manuel Megías
Lampreys, together with hagfishes, are the only extant representatives of the oldest branch of vertebrates, the agnathans, which are the sister group of gnathostomes; therefore, studies on these animals are of great evolutionary significance. Lampreys exhibit a particular life cycle with remarkable changes in their behavior, concomitant, in part, with important modifications in the head and its musculature, which might influence the development of the cranial nerves. In this context, some cranial nerves such as the optic nerve and the ocular motor nerves, which develop slowly during an extremely long larval period lasting more than five years, have been more thoroughly investigated; however, much less experimental information is available about others, such as the facial or the hypoglossal nerves...
April 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29620580/do-initial-symptom-factor-scores-predict-subsequent-impairment-following-concussion
#14
Paul E Cohen, Alicia Sufrinko, Robert J Elbin, Michael W Collins, Aaron M Sinnott, Anthony P Kontos
OBJECTIVE: Symptom factors present during the first week following concussion may predict subsequent concussion outcomes and recovery duration. We hypothesized that a high loading on cognitive-fatigue-migraine and somatic factors would be predictive of neurocognitive impairment following concussion. We also hypothesized that the affective factor would be related to vestibular symptoms and impairment. DESIGN: Prospective repeated measures. SETTING: Concussion specialty clinic...
March 28, 2018: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29610857/mast-cells-initiate-the-recruitment-of-neutrophils-following-ocular-surface-injury
#15
Srikant K Sahu, Sharad K Mittal, William Foulsham, Mingshun Li, Virender S Sangwan, Sunil K Chauhan
Purpose: The purpose of this study was to investigate the contribution of mast cells to early neutrophil recruitment during ocular inflammation. Methods: In a murine model of corneal injury, the epithelium and anterior stroma were removed using a handheld motor brush. Cromolyn sodium (2% in PBS) eye drops were administered topically for mast cell inhibition. In vitro, bone marrow-derived mast cells were cultured alone or with corneal tissue. The frequencies of CD45+ inflammatory cells, CD11b+Ly6G+ neutrophils, and ckit+FcεR1+ mast cells in the cornea were assessed by flow cytometry...
April 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29595558/ocular-motor-dysfunction-due-to-brainstem-disorders
#16
Michael S Vaphiades
No abstract text is available yet for this article.
March 27, 2018: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/29593643/spontaneous-nystagmus-in-the-dark-in-an-infantile-nystagmus-patient-may-represent-negative-optokinetic-afternystagmus
#17
Ting-Feng Lin, Christina Gerth-Kahlert, James V M Hanson, Dominik Straumann, Melody Ying-Yu Huang
Abnormal projection of the optic nerves to the wrong cerebral hemisphere transforms the optokinetic system from its usual negative feedback loop to a positive feedback loop with characteristic ocular motor instabilities including directional reversal of the optokinetic nystagmus (OKN) and spontaneous nystagmus, which are common features of infantile nystagmus syndrome (INS). Visual input plays a critical role in INS linked to an underlying optic nerve misprojection such as that often seen in albinism. However, spontaneous nystagmus often continues in darkness, making the visual, sensory-driven etiology questionable...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29556714/pharmacological-profile-of-vestibular-inhibitory-inputs-to-superior-oblique-motoneurons
#18
Parthena Soupiadou, Francisco Branoner, Hans Straka
Vestibulo-ocular reflexes (VOR) are mediated by three-neuronal brainstem pathways that transform semicircular canal and otolith sensory signals into motor commands for the contraction of spatially specific sets of eye muscles. The vestibular excitation and inhibition of extraocular motoneurons underlying this reflex is reciprocally organized and allows coordinated activation of particular eye muscles and concurrent relaxation of their antagonistic counterparts. Here, we demonstrate in isolated preparations of Xenopus laevis tadpoles that the discharge modulation of superior oblique motoneurons during cyclic head motion derives from an alternating excitation and inhibition...
March 19, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29553882/correlating-the-king-devick-test-with-vestibular-ocular-motor-screening-in-adolescent-patients-with-concussion-a-pilot-study
#19
Shira Russell-Giller, Diana Toto, Mike Heitzman, Mustafa Naematullah, John Shumko
BACKGROUND: The King-Devick (K-D) test is a rapid number-naming task that has been well validated as a sensitive sideline performance measure for concussion detection. Patients with concussion take significantly longer to complete the K-D test than healthy controls. Previous research suggests that ocular motor deficits, specifically saccadic abnormalities, may be an underlying factor for the prolonged time. However, these findings have not been studied at length. HYPOTHESIS: K-D testing time of concussed adolescents at the initial clinical concussion visit will positively correlate with vestibular/ocular motor screening (VOMS) total scores...
March 1, 2018: Sports Health
https://www.readbyqxmd.com/read/29549469/why-acute-unilateral-vestibular-midbrain-lesions-rarely-manifest-with-rotational-vertigo-a-clinical-and-modelling-approach-to-head-direction-cell-function
#20
Marianne Dieterich, Stefan Glasauer, Thomas Brandt
A retrospective clinical study focused on the frequency of rotational vertigo in 63 patients with acute unilateral midbrain strokes involving the vestibular and ocular motor systems. In contrast to unilateral pontomedullary brainstem lesions, rotational vertigo in midbrain lesions occurred with a low frequency (14%) and transient (< 1 day) course. Swaying vertigo or unspecific dizziness (22%) and postural imbalance (31%) were more frequent. Midbrain strokes with transient rotational vertigo manifested with lesions chiefly in the caudal midbrain tegmentum, while manifestations with swaying, unspecific, or no vertigo chiefly occurred in rostral mesencephalic or meso-diencephalic lesions...
March 16, 2018: Journal of Neurology
keyword
keyword
50126
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"