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https://www.readbyqxmd.com/read/29454231/influence-of-heading-perception-in-the-control-of-posture
#1
Alessandro Piras, Milena Raffi, Monica Perazzolo, Salvatore Squatrito
The optic flow visual input directly influences the postural control. The aim of the present study was to examine the relationship between visually induced heading perception and postural stability, using optic flow stimulation. The dots were accelerated to simulate a heading direction to the left or to the right of the vertical midline. The participants were instructed to indicate the perceived optic flow direction by making a saccade to the simulated heading direction. We simultaneously acquired electromyographyc and center of pressure (COP) signals...
February 10, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29450807/an-eye-fixation-related-potential-study-in-two-reading-tasks-reading-to-memorize-and-reading-to-make-a-decision
#2
Aline Frey, Benoît Lemaire, Laurent Vercueil, Anne Guérin-Dugué
We investigated how two different reading tasks, namely reading to memorize [Read & Memorize (RM)] and reading to decide whether a text was relevant to a given topic [Read & Decide (RD)], modulated both eye movements (EM) and brain activity. To this end, we set up an ecological paradigm using the eye fixation-related potentials (EFRP) technique, in which participants freely moved their eyes to process short paragraphs, while their electroencephalography (EEG) activity was recorded in synchronization with their EM...
February 15, 2018: Brain Topography
https://www.readbyqxmd.com/read/29450484/neurological-manifestations-among-us-government-personnel-reporting-directional-audible-and-sensory-phenomena-in-havana-cuba
#3
Randel L Swanson, Stephen Hampton, Judith Green-McKenzie, Ramon Diaz-Arrastia, M Sean Grady, Ragini Verma, Rosette Biester, Diana Duda, Ronald L Wolf, Douglas H Smith
Importance: From late 2016 through August 2017, US government personnel serving on diplomatic assignment in Havana, Cuba, reported neurological symptoms associated with exposure to auditory and sensory phenomena. Objective: To describe the neurological manifestations that followed exposure to an unknown energy source associated with auditory and sensory phenomena. Design, Setting, and Participants: Preliminary results from a retrospective case series of US government personnel in Havana, Cuba...
February 15, 2018: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29449194/prostaglandin-d2-receptor-dp1-antibodies-predict-vaccine-induced-and-spontaneous-narcolepsy-type-1-large-scale-study-of-antibody-profiling
#4
Helle Sadam, Arno Pihlak, Anri Kivil, Susan Pihelgas, Mariliis Jaago, Priit Adler, Jaak Vilo, Olli Vapalahti, Toomas Neuman, Dan Lindholm, Markku Partinen, Antti Vaheri, Kaia Palm
BACKGROUND: Neuropathological findings support an autoimmune etiology as an underlying factor for loss of orexin-producing neurons in spontaneous narcolepsy type 1 (narcolepsy with cataplexy; sNT1) as well as in Pandemrix influenza vaccine-induced narcolepsy type 1 (Pdmx-NT1). The precise molecular target or antigens for the immune response have, however, remained elusive. METHODS: Here we have performed a comprehensive antigenic repertoire analysis of sera using the next-generation phage display method - mimotope variation analysis (MVA)...
February 2, 2018: EBioMedicine
https://www.readbyqxmd.com/read/29446072/sleep-in-a-comparative-context-investigating-how-human-sleep-differs-from-sleep-in-other-primates
#5
Charles L Nunn, David R Samson
OBJECTIVES: Primates vary in their sleep durations and, remarkably, humans sleep the least per 24-hr period of the 30 primates that have been studied. Using phylogenetic methods that quantitatively situate human phenotypes within a broader primate comparative context, we investigated the evolution of human sleep architecture, focusing on: total sleep duration, rapid eye movement (REM) sleep duration, non-rapid eye movement (NREM) sleep duration, and proportion of sleep in REM. MATERIALS AND METHODS: We used two different Bayesian methods: phylogenetic prediction based on phylogenetic generalized least squares and a multistate Onrstein-Uhlenbeck (OU) evolutionary model of random drift and stabilizing selection...
February 14, 2018: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29445864/playing-to-your-skills-a-randomised-controlled-trial-evaluating-a-dedicated-video-game-for-minimally-invasive-surgery
#6
Cuan M Harrington, Vishwa Chaitanya, Patrick Dicker, Oscar Traynor, Dara O Kavanagh
BACKGROUND: Video gaming demands elements of visual attention, hand-eye coordination and depth perception which may be contiguous with laparoscopic skill development. General video gaming has demonstrated altered cortical plasticity and improved baseline/acquisition of minimally invasive skills. The present study aimed to evaluate for skill acquisition associated with a commercially available dedicated laparoscopic video game (Underground) and its unique (laparoscopic-like) controller for the Nintendo®Wii U™ console...
February 14, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29445510/a-neurologist-and-ataxia-using-eye-movements-to-learn-about-the-cerebellum
#7
REVIEW
David S Zee
The cerebellum, its normal functions and its diseases, and especially its relation to the control of eye movements, has been at the heart of my academic career. Here I review how this came about, with an emphasis on epiphanies, "tipping points" and the influences of mentors, colleagues and trainees. I set a path for young academicians, both clinicians and basic scientists, with some guidelines for developing a productive and rewarding career in neuroscience.
2018: Cerebellum & Ataxias
https://www.readbyqxmd.com/read/29445282/orexin-hypocretin-levels-in-the-cerebrospinal-fluid-and-characteristics-of-patients-with-myotonic-dystrophy-type-1-with-excessive-daytime-sleepiness
#8
Yuki Omori, Takashi Kanbayashi, Aya Imanishi, Ko Tsutsui, Yohei Sagawa, Yuka S Kikuchi, Masahiro Takeshima, Kazuhisa Yoshizawa, Sachiko Uemura, Tetsuo Shimizu
Purpose: Myotonic dystrophy type 1 (DM1) is often characterized by excessive daytime sleepiness (EDS) and sleep-onset rapid eye movement periods caused by muscleblind-like protein 2. The EDS tends to persist even after treatment of sleep apnea. We measured the cerebrospinal fluid (CSF) orexin levels in DM1 patients with EDS and compared the clinical characteristics with narcolepsy type 1 and idiopathic hypersomnia (IHS) patients. Patients and methods: We measured the CSF orexin levels in 17 DM1 patients with EDS and evaluated subjective sleepiness using the Epworth Sleepiness Scale (ESS), objective sleepiness using mean sleep latency (MSL), and sleep apnea using apnea-hypopnea index (AHI)...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29442360/lexical-predictability-during-natural-reading-effects-of-surprisal-and-entropy-reduction
#9
Matthew W Lowder, Wonil Choi, Fernanda Ferreira, John M Henderson
What are the effects of word-by-word predictability on sentence processing times during the natural reading of a text? Although information complexity metrics such as surprisal and entropy reduction have been useful in addressing this question, these metrics tend to be estimated using computational language models, which require some degree of commitment to a particular theory of language processing. Taking a different approach, this study implemented a large-scale cumulative cloze task to collect word-by-word predictability data for 40 passages and compute surprisal and entropy reduction values in a theory-neutral manner...
February 14, 2018: Cognitive Science
https://www.readbyqxmd.com/read/29441469/gaze-anchoring-guides-real-but-not-pantomime-reach-to-grasp-support-for-the-action-perception-theory
#10
Jessica R Kuntz, Jenni M Karl, Jon B Doan, Ian Q Whishaw
Reach-to-grasp movements feature the integration of a reach directed by the extrinsic (location) features of a target and a grasp directed by the intrinsic (size, shape) features of a target. The action-perception theory suggests that integration and scaling of a reach-to-grasp movement, including its trajectory and the concurrent digit shaping, are features that depend upon online action pathways of the dorsal visuomotor stream. Scaling is much less accurate for a pantomime reach-to-grasp movement, a pretend reach with the target object absent...
February 13, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29440943/state-of-the-art-of-robotic-surgery-related-to-vision-brain-and-eye-applications-of-newly-available-devices
#11
REVIEW
Raffaele Nuzzi, Luca Brusasco
Background: Robot-assisted surgery has revolutionized many surgical subspecialties, mainly where procedures have to be performed in confined, difficult to visualize spaces. Despite advances in general surgery and neurosurgery, in vivo application of robotics to ocular surgery is still in its infancy, owing to the particular complexities of microsurgery. The use of robotic assistance and feedback guidance on surgical maneuvers could improve the technical performance of expert surgeons during the initial phase of the learning curve...
2018: Eye and Brain
https://www.readbyqxmd.com/read/29440902/chinese-calligraphy-handwriting-cch-a-case-of-rehabilitative-awakening-of-a-coma-patient-after-stroke
#12
Henry Sr Kao, Stewart Pw Lam, Tin Tin Kao
Introduction: This study investigated the efficacy of Chinese calligraphy handwriting (CCH) for the awakening of patients under a vegetative state after stroke. The theories, the instrument, and the treatment protocols were reported. A single case of a severe stroke patient who was in a coma state for 2 years is presented in this study. The objectives were to apply finger writing as a new method to awaken a stroke patient in a coma state and to test the effect of this method in improving the patient's vegetative states over time...
2018: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/29440494/execution-of-saccadic-eye-movements-affects-speed-perception
#13
Alexander Goettker, Doris I Braun, Alexander C Schütz, Karl R Gegenfurtner
Due to the foveal organization of our visual system we have to constantly move our eyes to gain precise information about our environment. Doing so massively alters the retinal input. This is problematic for the perception of moving objects, because physical motion and retinal motion become decoupled and the brain has to discount the eye movements to recover the speed of moving objects. Two different types of eye movements, pursuit and saccades, are combined for tracking. We investigated how the way we track moving targets can affect the perceived target speed...
February 13, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29436799/-eye-of-the-tiger-in-a-non-responsive-neuropsychiatric-patient-a-case-report
#14
Milad Hosseinialhashemi, Babak Daneshfard, Atefe Hashemi
Hallervorden-Spatz syndrome is a rare neurodegenerative disorder with hereditary properties. It usually occurs in young adolescents with extrapyramidal symptoms besides disturbed mental function. In this study, we present a 23-year-old neuropsychiatric patient who primarily misdiagnosed to have conversion disorder. She had 5-year history of progressive dysarthria and generalized abnormal movements. After detecting the pathognomonic sign of "eye of the tiger" diagnosis was confirmed. The patient was discharged...
January 2018: Acta Medica Iranica
https://www.readbyqxmd.com/read/29436320/long-term-outcomes-of-trauma-focused-treatment-in-psychosis
#15
David van den Berg, Paul A J M de Bont, Berber M van der Vleugel, Carlijn de Roos, Ad de Jongh, Agnes van Minnen, Mark van der Gaag
We present 12-month follow-up results for a randomised controlled trial of prolonged exposure and eye movement desensitisation and reprocessing (EMDR) therapy in 85 (78.8%) participants with psychotic disorder and comorbid post-traumatic stress disorder (PTSD). Positive effects on clinician-rated PTSD, self-rated PTSD, depression, paranoid-referential thinking and remission from schizophrenia were maintained up to 12-month follow-up. Negative post-traumatic cognitions declined in prolonged exposure and were stable in EMDR...
February 7, 2018: British Journal of Psychiatry: the Journal of Mental Science
https://www.readbyqxmd.com/read/29433504/successful-treatment-of-methotrexate-intolerance-in-juvenile-idiopathic-arthritis-using-eye-movement-desensitization-and-reprocessing-treatment-protocol-and-preliminary-results
#16
Lea Höfel, Bruno Eppler, Magdalena Storf, Elizabeth Schnöbel-Müller, Johannes-Peter Haas, Boris Hügle
BACKGROUND: Methotrexate (MTX), commonly used in juvenile idiopathic arthritis (JIA), frequently has to be discontinued due to intolerance with anticipatory and associative gastrointestinal adverse effects. Eye Movement Desensitization and Reprocessing (EMDR) is a psychological method where dysfunctional experiences and memories are reprocessed by recall combined with bilateral eye movements. The objective of this study was to assess efficacy of EMDR for treatment of MTX intolerance in JIA patients...
February 13, 2018: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/29432778/-looking-at-nothing-during-sequential-sensorimotor-actions-long-term-memory-based-eye-scanning-of-remembered-target-locations
#17
Rebecca M Foerster
Before acting humans saccade to a target object to extract relevant visual information. Even when acting on remembered objects, locations previously occupied by relevant objects are fixated during imagery and memory tasks - a phenomenon called "looking-at-nothing". While looking-at-nothing was robustly found in tasks encouraging declarative memory built-up, results are mixed in the case of procedural sensorimotor tasks. Eye-guidance to manual targets in complete darkness was observed in a task practiced for days beforehand, while investigations using only a single session did not find fixations to remembered action targets...
February 9, 2018: Vision Research
https://www.readbyqxmd.com/read/29432106/a-feasibility-study-of-autism-behavioral-markers-in-spontaneous-facial-visual-and-hand-movement-response-data
#18
Manar D Samad, Norou Diawara, Jonna L Bobzien, John W Harrington, Megan A Witherow, Khan M Iftekharuddin
Autism spectrum disorder (ASD) is a neurodevelopmental disability with atypical traits in behavioral and physiological responses. These atypical traits in individuals with ASD may be too subtle and subjective to measure visually using tedious methods of scoring. Alternatively, the use of intrusive sensors in the measurement of psychophysical responses in individuals with ASD may likely cause inhibition and bias. This paper proposes a novel experimental protocol for non-intrusive sensing and analysis of facial expression, visual scanning, and eye-hand coordination to investigate behavioral markers for ASD...
February 2018: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/29429782/long-term-treatment-of-niemann-pick-type-c1-disease-with-intrathecal-2-hydroxypropyl-%C3%AE-cyclodextrin
#19
Elizabeth Berry-Kravis, Jamie Chin, Anne Hoffmann, Amy Winston, Robin Stoner, Lisa LaGorio, Katherine Friedmann, Mariana Hernandez, Daniel S Ory, Forbes D Porter, Joan A O'Keefe
BACKGROUND: Intrathecal 2-hydoxypropyl-β-cyclodextrin has been found to mobilize cholesterol, extend life, reduce cerebellar pathology, and delay onset of ataxia in the mouse and cat models of Niemann-Pick disease, type C1, a clinically variable progressive and ultimately fatal neurodegenerative storage disorder characterized by endolysosomal accumulation of unesterified cholesterol. OBJECTIVE: In this study, the long-term effects of intrathecal 2-hydoxypropyl-β-cyclodextrin treatment for 2...
January 8, 2018: Pediatric Neurology
https://www.readbyqxmd.com/read/29429397/pre-movement-and-during-movement-visual-search-behaviours-vary-depending-on-expertise-and-anxiety-levels-in-ten-pin-bowling
#20
Wan Xiu Goh, Bernice H Y Lim, Matthew James Wylde, Michele Macnaughton, Jia Yi Chow, Marcus J C Lee
This study investigated the pre-movement and during-movement visual search behaviour (VSB) and quiet eye (QE) of 11 elite versus 10 sub-elite ten-pin bowlers, performing under high-anxiety and low-anxiety conditions. Pre-movement and independent of expertise, bowlers had more fixations and directed them to more locations when performing under high-anxiety compared with low-anxiety. Elite bowlers fixated at more locations closer to the pins in pre-movement than during-movement, with pre-movement QE occurring mostly at the breakpoint and middle arrows...
February 10, 2018: Journal of Sports Sciences
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