keyword
MENU ▼
Read by QxMD icon Read
search

Oculomotor

keyword
https://www.readbyqxmd.com/read/28934359/microsaccades-during-reading
#1
Norick R Bowers, Martina Poletti
Recent research has shown that microsaccades contribute to high acuity vision. However, little is known about whether microsaccades also play a role in daily activities, such as reading, that do not involve stimuli at the limit of spatial resolution. While the functions of larger saccades in reading have been extensively examined, microsaccades are commonly regarded as oculomotor noise in this context. We used high-resolution eyetracking and precise gaze localization to investigate fine oculomotor behavior during reading...
2017: PloS One
https://www.readbyqxmd.com/read/28930987/how-to-build-a-dichoptic-presentation-system-that-includes-an-eye-tracker
#2
Cheng S Qian, Jan W Brascamp
The presentation of different stimuli to the two eyes, dichoptic presentation, is essential for studies involving 3D vision and interocular suppression. There is a growing literature on the unique experimental value of pupillary and oculomotor measures, especially for research on interocular suppression. Although obtaining eye-tracking measures would thus benefit studies that use dichoptic presentation, the hardware essential for dichoptic presentation (e.g. mirrors) often interferes with high-quality eye tracking, especially when using a video-based eye tracker...
September 6, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28930819/recovery-of-an-injured-corticobulbar-tract-in-a-patient-with-stroke-a-case-report
#3
Sungho Jang, Jonghoon Kim, Yousung Seo, Soyoung Kwak
RATIONALE: The corticobulbar tract (CBT) is known to be involved in the motor function of the non-oculomotor cranial nuclei and controls the muscles of the face, head, and neck. Several studies have reported injury of the CBT in patients with brain injury, however, little is known about recovery of the injured CBT. PATIENT CONCERNS: A 59-year-old right-handed male underwent decompressive craniectomy for management of brain swelling and intracerebral hemorrhage following an infarction in the left middle cerebral artery territory...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28926944/coach-cv-the-seven-clinical-phenotypes-of-concussion
#4
Neil Craton, Haitham Ali, Stephane Lenoski
Our understanding of the diverse physiological manifestations of concussion is changing rapidly. This has an influence on the clinical assessment of patients who have sustained a concussion. The 2017 Consensus Statement on Concussion in Sport states that numerous post-injury clinical findings, such as cognitive deficits, post-traumatic headaches, dizziness, difficulties with oculomotor function, and depression have all been associated with a poorer prognosis in concussed patients. This demonstrates that there are several potential clinical manifestations after head injury warranting clinical evaluation...
September 16, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28924127/recurrent-painful-ophthalmoplegic-neuropathy-with-residual-mydriasis-in-an-adult-should-it-be-classified-as-ophthalmoplegic-migraine
#5
Yuya Kobayashi, Yasufumi Kondo, Kana Uchibori, Jun Tsuyuzaki
Recurrent painful ophthalmoplegic neuropathy (RPON) is a rare condition that manifests as headache and ophthalmoplegia. It typically occurs in children. Although migraine or neuropathy have been suggested as etiologies, the precise etiology remains unclear. In the International Classification of Headache Disorders 3rd edition-beta version (ICHD3β) (code 13.9), RPON was categorized into painful cranial neuropathies and other facial pains. We encountered a 48-year-old woman who had diplopia and right ptosis...
September 15, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28919233/craniospinal-germinomas-in-a-patient-with-down-syndrome-successfully-treated-with-standard-dose-chemotherapy-and-craniospinal-irradiation-a-case-report-and-literature-review
#6
Yohei Miyake, Jun-Ichi Adachi, Tomonari Suzuki, Kazuhiko Mishima, Atsushi Sasaki, Ryo Nishikawa
BACKGROUND: Patients with Down syndrome (DS) are more likely to develop chemotherapy-related complications. The standard treatment for these patients with cancers has not yet been established, and the risks of standard chemotherapy are unclear. In this paper, a rare case of multiple craniospinal germinomas in a patient with DS, which was successfully treated with standard-dose chemotherapy combined with craniospinal irradiation is reported. CASE DESCRIPTION: The authors report a case of multiple craniospinal germinomas in a DS patient who presented with bilateral oculomotor and facial nerve palsy and hearing loss...
September 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28904108/comparison-of-three-models-of-saccade-disconjugacy-in-strabismus
#7
Mark M G Walton, Michael J Mustari
In pattern strabismus the horizontal and vertical misalignments vary with eye position along the orthogonal axis. The disorder is typically described in terms of overaction or underaction of oblique muscles. Recent behavioral studies in humans and monkeys, however, have reported that such actions are insufficient to fully explain the patterns of directional and amplitude disconjugacy of saccades. There is mounting evidence that the oculomotor abnormalities associated with strabismus are at least partially attributable to neurophysiological abnormalities...
September 13, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28904104/the-superior-colliculus-and-the-steering-of-saccades-toward-a-moving-visual-target
#8
Laurent Goffart, Aaron Lee Cecala, Neeraj J Gandhi
Following the suggestion that a command encoding the current target location feeds the oculomotor system during interceptive saccades, we tested the involvement of the deep superior colliculus (dSC). Extracellular activity of 52 saccade-related neurons was recorded in three monkeys while they generated saccades to targets that were static or moving along the preferred axis, away from (outward) or toward a fixated target (inward) with a constant speed (20°/s). Vertical and horizontal motions were tested when possible...
September 13, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28898914/-neuroanatomy-of-the-oculomotor-system
#9
Stephan Heermann
After just a clinical examination, the experienced neurologist can assign specific symptoms quite precisely to distinct lesions within the brain and other parts of the nervous system, on the basis of his neuroanatomical knowledge. This also holds true for lesions affecting the oculomotor system. The aim of this article is to give a comprehensive overview of the neuroanatomical basis of the oculomotor system, in order to facilitate the precise spatial assignment of potential lesions affecting the control of eye movements...
September 12, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28898322/-new-mutation-in-atm-gen-in-patient-whith-ataxia-telangiectasia-clinical-case
#10
Felipe Ruiz-Botero, Juliet T Rodríguez-Guerrero
INTRODUCTION: The ataxia telangiectasia syndrome (AT) is a genetic disease with an autosomal recessive inheritance pattern, with multisystem involvement and a broad clinical spectrum. It is caused by the mutation of the ATM gene, causing reduction or absence of the ATM proteinkinase, altering processes in the cell cycle, DNA repair and apoptosis. The objective of this article is to report the case of a patient with ataxia telangiectasia syndrome, caused by a mutation not previously reported in the literature...
2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28894835/the-use-of-oculomotor-vestibular-and-reaction-time-tests-to-assess-mild-traumatic-brain-injury-mtbi-over-time
#11
Michael E Hoffer, Carey Balaban, Mikhaylo Szczupak, James Buskirk, Hillary Snapp, James Crawford, Sean Wise, Sara Murphy, Kathryn Marshall, Constanza Pelusso, Sean Knowles, Alex Kiderman
OBJECTIVES: The objective of this work is to examine the outcomes of a set of objective measures for evaluating individuals with minor traumatic brain injury (mTBI) over the sub-acute time period. These methods involve tests of oculomotor, vestibular, and reaction time functions. This work expands upon published work examining these test results at the time of presentation. STUDY DESIGN: This study is a prospective age- and sex-matched controlled study. MATERIALS AND METHODS: The subject group was composed of 106 individuals with mTBI and 300 age- and sex-matched controls without a history of mTBI...
August 2017: Laryngoscope Investigative Otolaryngology
https://www.readbyqxmd.com/read/28893926/limited-contribution-of-primary-motor-cortex-in-eye-hand-coordination-a-tms-study
#12
James Mathew, Alexandre Eusebio, Frederic Danion
The ability to track a moving target with the eye is substantially improved when the target is self-moved as compared to when it is moved by an external agent. To account for this observation it has been postulated that the oculomotor system has access to hand efference copy thereby allowing to predict the motion of the visual target. Along this scheme, we tested the effect of transcranial magnetic stimulation (TMS) over the hand area of the primary motor cortex (M1) when human participants (50% females) are asked to track with their eyes a visual target whose horizontal motion is driven by their grip force...
September 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28884336/the-effects-of-constraining-vision-and-eye-movements-on-whole-body-coordination-during-standing-turns
#13
Rebecca K Robins, Mark A Hollands
Turning the body towards a new direction is normally achieved via a top-down synergy whereby gaze (eye direction in space) leads the upper body segments, which in turn lead the feet. These anticipatory eye movements are observable even in darkness and constraining the initial eye movements modifies the stereotyped top-down reorientation sequence. Our aim was to elucidate the relative contributions of vision and eye movements to whole-body coordination during large standing turns by observing the effects of separately removing visual information or suppressing eye movements throughout the turn...
September 7, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28883717/assessing-balance-through-the-use-of-a-low-cost-head-mounted-display-in-older-adults-a-pilot-study
#14
Santiago J Saldana, Anthony P Marsh, W Jack Rejeski, Jack K Haberl, Peggy Wu, Scott Rosenthal, Edward H Ip
INTRODUCTION: As the population ages, the prevention of falls is an increasingly important public health problem. Balance assessment forms an important component of fall-prevention programs for older adults. The recent development of cost-effective and highly responsive virtual reality (VR) systems means new methods of balance assessment are feasible in a clinical setting. This proof-of-concept study made use of the submillimeter tracking built into modern VR head-mounted displays (VRHMDs) to assess balance through the use of visual-vestibular conflict...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28883253/interstitial-lung-disease-as-an-initial-manifestation-of-giant-cell-arteritis
#15
Chisato Konishi, Kazuhiko Nakagawa, Erika Nakai, Kenta Nishi, Ryoichi Ishikawa, Shinya Uematsu, Satoshi Nakao, Masato Taki, Kyohei Morita, Hwang Moon Hee, Chie Yoshimura, Toshiaki Wakayama, Yasuo Nishizaka
Interstitial lung disease (ILD) has rarely been reported as a manifestation of giant cell arteritis (GCA). We herein report a unique case of GCA in a 76-year-old woman who presented with ILD as an initial manifestation of GCA. Ten years before admission, she had been diagnosed with granulomatous ILD of unknown etiology. Corticosteroid therapy induced remission. One year after the cessation of corticosteroid therapy, she was admitted with a persistent fever. After admission, she developed left oculomotor paralysis...
September 6, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28879705/guillain-barre-syndrome-induced-by-heat-stroke-a-case-report-and-literature-review
#16
Huijun Wen
BACKGROUND: Heat stroke is a potentially fatal condition that is caused by elevated core temperature. GuillainBarre syndrome (GBS) induced by heat stroke is extremely rare, and its manifestation with damage to multiple cranial nerves has not been described. METHODS: We describe a rare case of GBS induced by heat stroke with damage to multiple cranial and peripheral nerves. The clinical, radiological, and electrophysiological profiles were presented and analyzed...
September 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28879505/recovery-of-oculomotor-nerve-palsy-after-endovascular-treatment-of-ruptured-posterior-communicating-artery-aneurysm
#17
Qing-Quan Zu, Xing-Long Liu, Bin Wang, Chun-Gao Zhou, Jin-Guo Xia, Lin-Bo Zhao, Hai-Bin Shi, Sheng Liu
PURPOSE: Oculomotor nerve palsy (ONP) may result from Posterior communicating artery (Pcom) aneurysms. Endovascular treatment of ruptured Pcom aneurysms generally is a safe procedure, but the effect of this therapy on ONP is incompletely elucidated. This retrospective study evaluates outcomes of ONP after endovascular treatment for ruptured Pcom aneurysm and with the intention to clarify predictors of recovery. METHODS: From May 2010 to October 2015, 210 patients with Pcom aneurysms underwent endovascular treatment at our institution...
September 6, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28867316/endoscopic-endonasal-surgery-for-treatment-of-pituitary-apoplexy-16-years-of-experience-in-a-specialized-pituitary-center-endoscopic-surgery-for-pituitary-apoplexy
#18
Jackson A Gondim, Lucas Alverne F de Albuquerque, Joao Paulo Almeida, Tania Bulcao, Erica Gomes, Michele Schops, Raquel Vasconcelos, Flora da Paz, Sergio Botelho Guimarães
OBJECTIVE: Symptomatic pituitary apoplexy is a rare but life-threatening condition caused by sudden hemorrhage or infarction of a pituitary adenoma. In the current study, we aim to evaluate the clinical presentation, management and clinical outcomes in a cohort of patients who were treated for this condition in our center in the last 16 years. METHODS: We performed a retrospective analysis of all patients who underwent endoscopic endonasal surgery for treatment of symptomatic pituitary apoplexy between 2001 and 2016 in our center...
August 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28866427/influence-of-neck-torsion-on-near-point-convergence-in-subjects-with-idiopathic-neck-pain
#19
Phoebe Giffard, Laura Daly, Julia Treleaven
BACKGROUND: People with neck pain (NP) experience sensorimotor and oculomotor deficits thought to be due to abnormal cervical afferent input. Convergence insufficiency (CI) measured by near point convergence (NPC) may be a feature in NP and neck torsion might help to differentiate a cervical cause. OBJECTIVES: This study aimed to investigate repeatability and reliability of NPC in neutral and torsion and compare between idiopathic NP and controls along with correlation to the Convergence Insufficiency Symptom Survey (CISS)...
August 26, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28862552/cavernous-sinus-compartments-from-the-endoscopic-endonasal-approach-anatomical-considerations-and-surgical-relevance-to-adenoma-surgery
#20
Juan C Fernandez-Miranda, Nathan T Zwagerman, Kumar Abhinav, Stefan Lieber, Eric W Wang, Carl H Snyderman, Paul A Gardner
OBJECTIVE Tumors with cavernous sinus (CS) invasion represent a neurosurgical challenge. Increasing application of the endoscopic endonasal approach (EEA) requires a thorough understanding of the CS anatomy from an endonasal perspective. In this study, the authors aimed to develop a surgical anatomy-based classification of the CS and establish its utility for preoperative surgical planning and intraoperative guidance in adenoma surgery. METHODS Twenty-five colored silicon-injected human head specimens were used for endonasal and transcranial dissections of the CS...
September 1, 2017: Journal of Neurosurgery
keyword
keyword
44638
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"