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https://www.readbyqxmd.com/read/28719842/spatiotemporal-gait-changes-with-use-of-an-arm-swing-cueing-device-in-people-with-parkinson-s-disease
#1
Elizabeth Thompson, Peter Agada, W Geoffrey Wright, Hendrik Reimann, John Jeka
Impaired arm swing is a common motor symptom of Parkinson's disease (PD), and correlates with other gait impairments and increased risk of falls. Studies suggest that arm swing is not merely a passive consequence of trunk rotation during walking, but an active component of gait. Thus, techniques to enhance arm swing may improve gait characteristics. There is currently no portable device to measure arm swing and deliver immediate cues for larger movement. Here we test report pilot testing of such a device, ArmSense (patented), using a crossover repeated-measures design...
July 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28719554/treatment-of-displaced-midshaft-clavicle-fractures-figure-of-eight-harness-versus-anterior-plate-osteosynthesis-a-randomized-controlled-trial
#2
Marcel Jun Sugawara Tamaoki, Fabio Teruo Matsunaga, Adelmo Rezende Ferreira da Costa, Nicola Archetti Netto, Marcelo Hide Matsumoto, Joao Carlos Belloti
BACKGROUND: Most midshaft clavicle fractures affect the economically active population, which is negatively impacted by transient limb impairment during the treatment. There is still debate about the advantages and disadvantages of surgical treatment for these fractures. METHODS: In this prospective randomized controlled trial, 117 patients were allocated to 1 of 2 groups: nonsurgical treatment with a figure-of-eight harness or surgical treatment with anteroinferior plate osteosynthesis...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28719508/is-the-organisation-of-the-primary-motor-cortex-in-low-back-pain-related-to-pain-movement-and-or-sensation
#3
Edith Elgueta-Cancino, Siobhan Schabrun, Paul Hodges
Primary motor cortex (M1) organisation differs between individuals with and without chronic low back pain (CLBP), in parallel with motor and sensory impairments. This study investigated whether movement behaviour and tactile/pain sensation are related to M1 organisation in CLBP. Transcranial magnetic stimulation (TMS) was used to map the M1 representation of the erector spinae and multifidus muscles in 20 participants with and without CLBP. Cortical organisation was quantified by: map volume; center of gravity (CoG); number of peaks; and primary and secondary peak location...
July 17, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28718788/implementation-of-an-imu-aided-image-stacking-algorithm-in-a-digital-camera-for-unmanned-aerial-vehicles
#4
Ahmad Audi, Marc Pierrot-Deseilligny, Christophe Meynard, Christian Thom
Images acquired with a long exposure time using a camera embedded on UAVs (Unmanned Aerial Vehicles) exhibit motion blur due to the erratic movements of the UAV. The aim of the present work is to be able to acquire several images with a short exposure time and use an image processing algorithm to produce a stacked image with an equivalent long exposure time. Our method is based on the feature point image registration technique. The algorithm is implemented on the light-weight IGN (Institut national de l'information géographique) camera, which has an IMU (Inertial Measurement Unit) sensor and an SoC (System on Chip)/FPGA (Field-Programmable Gate Array)...
July 18, 2017: Sensors
https://www.readbyqxmd.com/read/28718173/temporal-trimming-evidence-that-common-onset-masking-shortens-perceptual-sampling-of-conscious-object-representations
#5
Geoffrey W Harrison, Jason Rajsic, Daryl E Wilson
Common-onset masking (COM) refers to a methodology where a mask can impair awareness of an object if the mask's offset is delayed relative to the offset of the object. This method has classically been used to understand how discontinuities in visual input lead to the discrete removal of object representations before they reach conscious awareness. However, COM has recently been shown to reduce the precision of conscious object representations (Harrison, Rajsic, & Wilson, Psychonomic Bulletin & Review, 23(1), 180-186, 2016)...
July 17, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28717586/evaluating-platelet-aggregation-dynamics-from-laser-speckle-fluctuations
#6
Zeinab Hajjarian, Diane M Tshikudi, Seemantini K Nadkarni
Platelets are key to maintaining hemostasis and impaired platelet aggregation could lead to hemorrhage or thrombosis. We report a new approach that exploits laser speckle intensity fluctuations, emanated from a drop of platelet-rich-plasma (PRP), to profile aggregation. Speckle fluctuation rate is quantified by the speckle intensity autocorrelation, g2(t), from which the aggregate size is deduced. We first apply this approach to evaluate polystyrene bead aggregation, triggered by salt. Next, we assess dose-dependent platelet aggregation and inhibition in human PRP spiked with adenosine diphosphate and clopidogrel...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28717219/versatile-functional-roles-of-horizontal-cells-in-the-retinal-circuit
#7
Taro Chaya, Akihiro Matsumoto, Yuko Sugita, Satoshi Watanabe, Ryusuke Kuwahara, Masao Tachibana, Takahisa Furukawa
In the retinal circuit, environmental light signals are converted into electrical signals that can be decoded properly by the brain. At the first synapse of the visual system, information flow from photoreceptors to bipolar cells is modulated by horizontal cells (HCs), however, their functional contribution to retinal output and individual visual function is not fully understood. In the current study, we investigated functional roles for HCs in retinal ganglion cell (RGC) response properties and optokinetic responses by establishing a HC-depleted mouse line...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28716601/changes-in-refractive-status-in-an-elderly-chinese-population-in-a-7-year-follow-up-the-shihpai-eye-study
#8
Tung-Mei Kuang, Su-Ying Tsai, Catherine Jiu-Ling Liu, Yu-Chieh Ko, Shui-Mei Lee, Pesus Chou
BACKGROUND: Refractive error is the major cause of moderate and severe visual impairment. Visual impairment limits people's ability to perform daily tasks and affects their quality of life. Longitudinal data on the refractive status of the elderly was available only for whites and Africans. The purpose of this study was to report the 7-year incidence of myopia, hyperopia and refractive error change as well as their associated risk factors in a metropolitan elderly Chinese population. METHODS: The Shihpai Eye Study 2006 included 460/824 (55...
July 14, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28714891/structural-and-functional-neuroimaging-of-visual-hallucinations-in-lewy-body-disease-a-systematic-literature-review
#9
REVIEW
Stefania Pezzoli, Annachiara Cagnin, Oliver Bandmann, Annalena Venneri
Patients with Lewy body disease (LBD) frequently experience visual hallucinations (VH), well-formed images perceived without the presence of real stimuli. The structural and functional brain mechanisms underlying VH in LBD are still unclear. The present review summarises the current literature on the neural correlates of VH in LBD, namely Parkinson's disease (PD), and dementia with Lewy bodies (DLB). Following a systematic literature search, 56 neuroimaging studies of VH in PD and DLB were critically reviewed and evaluated for quality assessment...
July 15, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28714429/structural-brain-correlations-of-visuospatial-and-visuoperceptual-tests-in-parkinson-s-disease
#10
Anna Isabel Garcia-Diaz, Barbara Segura, Hugo Cesar Baggio, Maria Jose Marti, Francesc Valldeoriola, Yaroslau Compta, Nuria Bargallo, Carme Uribe, Anna Campabadal, Alexandra Abos, Carme Junque
BACKGROUND: Diagnosis of mild cognitive impairment in Parkinson's disease (PD) is relevant because it is a marker for evolution to dementia. However, the selection of suitable tests to evaluate separate cognitive domains in mild cognitive impairment related to PD remains an open question. The current work aims to investigate the neuroanatomical correlates of several visuospatial/visuoperceptual tests using the same sample and a multimodal MRI approach. METHODS: The study included 36 PD patients and 20 healthy subjects matched for age, sex, and education...
July 17, 2017: Journal of the International Neuropsychological Society: JINS
https://www.readbyqxmd.com/read/28714339/inhaled-and-systemic-steroid-exposure-and-neurodevelopmental-outcome-of-preterm-neonates
#11
Edmond N Kelly, Vibhuti S Shah, Jody Levenbach, Michael Vincer, Orlando DaSilva, Prakesh S Shah
OBJECTIVES: To compare death and/or neurodevelopmental outcomes of preterm infants exposed to inhaled and/or systemic steroids with those without exposure, and examine the impact of timing of exposure. METHODS: Retrospective study of infants born <29 weeks gestation and assessed at 18-21 months corrected age (CA). Neurodevelopmental impairment (NDI) was defined as any Bayley Scales of Infant and Toddler Development-III (BSID-III) score <85, cerebral palsy ≥ grade one, and visual or hearing impairment...
July 16, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28713861/behavioural-clusters-and-predictors-of-performance-during-recovery-from-stroke
#12
L E Ramsey, J S Siegel, C E Lang, M Strube, G L Shulman, M Corbetta
We examined the patterns and variability of recovery post-stroke in multiple behavioral domains. A large cohort of first time stroke patients with heterogeneous lesions was studied prospectively and longitudinally at 1-2 weeks, 3 months and one year post-injury with structural MRI to measure lesion anatomy and in-depth neuropsychological assessment. Impairment was described at all timepoints by a few clusters of correlated deficits. The time course and magnitude of recovery was similar across domains, with change scores largely proportional to the initial deficit and most recovery occurring within the first three months...
2017: Nature Human Behaviour
https://www.readbyqxmd.com/read/28713117/alteration-in-taste-perception-among-young-children-during-the-use-of-removable-orthodontic-appliance-therapy
#13
Priyanka Razdan, V S Sakthivel, Zuber A Naqvi, Vinod Goyal, Swati Tripathi, Smita Singh
BACKGROUND: The sense of smell is very influential in the taste of foods. If the smell pleases us, we anticipate the taste of the food with a great deal of relish. If our sense of smell is impaired, so is our taste. The effect of appliance on taste perceptions has always had a controversial subject. MATERIALS AND METHODS: The present study was designed to analyze the change in taste perception in children using removable orthodontic appliances. All the selected volunteers were given different taste stimuli and were asked to score as per their perception...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28712953/physical-activity-levels-in-children-with-sensory-problems-cross-sectional-analyses-from-the-millennium-cohort-study
#14
Genevieve Williams, Daniel Aggio, Brendon Stubbs, Shahina Pardhan, Benjamin Gardner, Lee Smith
BACKGROUND: Hearing and vision impairments/problems are associated with increased risk of premature mortality in adulthood. One potential pathway explaining this association is reduced levels of physical activity. Reductions in activity levels due to sensory impairments may commence earlier in life; however, associations between sensory impairments/problems and activity levels in childhood are not well understood. OBJECTIVE: The objective of this study was to examine associations between hearing and vision problems and objectively measured activity levels in a representative sample of British children...
July 11, 2017: Disability and Health Journal
https://www.readbyqxmd.com/read/28712841/long-term-impact-of-subthalamic-stimulation-on-cognitive-function-in-patients-with-advanced-parkinson-s-disease
#15
M Acera, A Molano, B Tijero, G Bilbao, I Lambarri, R Villoria, J Somme, E Ruiz de Gopegui, I Gabilondo, J C Gomez-Esteban
OBJECTIVE: The aim of this study was to evaluate the effects of deep brain stimulation of the subthalamic nucleus (DBS-SN) on cognitive function in patients with Parkinson's disease (PD) 5 years after surgery. MATERIAL AND METHODS: We conducted a prospective study including 50 patients with PD who underwent DBS-SN (62.5% were men; mean age of 62.2±8.2 years; mean progression time of 14.1±6.3 years). All patients were assessed before the procedure and at one year after surgery; 40 patients were further followed up until the 5-year mark...
July 13, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28712657/prevalence-of-age-related-macular-degeneration-in-europe-the-past-and-the-future
#16
Johanna M Colijn, Gabriëlle H S Buitendijk, Elena Prokofyeva, Dalila Alves, Maria L Cachulo, Anthony P Khawaja, Audrey Cougnard-Gregoire, Bénédicte M J Merle, Christina Korb, Maja G Erke, Alain Bron, Eleftherios Anastasopoulos, Magda A Meester-Smoor, Tatiana Segato, Stefano Piermarocchi, Paulus T V M de Jong, Johannes R Vingerling, Fotis Topouzis, Catherine Creuzot-Garcher, Geir Bertelsen, Norbert Pfeiffer, Astrid E Fletcher, Paul J Foster, Rufino Silva, Jean-François Korobelnik, Cécile Delcourt, Caroline C W Klaver
PURPOSE: Age-related macular degeneration (AMD) is a frequent, complex disorder in elderly of European ancestry. Risk profiles and treatment options have changed considerably over the years, which may have affected disease prevalence and outcome. We determined the prevalence of early and late AMD in Europe from 1990 to 2013 using the European Eye Epidemiology (E3) consortium, and made projections for the future. DESIGN: Meta-analysis of prevalence data. PARTICIPANTS: A total of 42 080 individuals 40 years of age and older participating in 14 population-based cohorts from 10 countries in Europe...
July 14, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28712175/corneal-complications-and-visual-impairment-in-vernal-keratoconjunctivitis-patients
#17
Abdus Salam Arif, Bushra Aaqil, Afsheen Siddiqui, Zainab Nazneen, Umer Farooq
BACKGROUND: Vernal kerato-conjunctivitis (VKC) is an infrequent but serious form of allergic conjunctivitis common in warm and humid areas where air is rich in allergens. It affects both eyes asymmetrically. Although VKC is a self-limiting disease but visions affecting corneal complications influence the quality of life in school children. The aim of this study was to list the corneal complications due to this condition and to find out the extent of visual impairment among VKC patients...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28711177/size-of-facial-port-wine-birthmark-may-predict-neurologic-outcome-in-sturge-weber-syndrome
#18
Malgorzata Dymerska, Anna Y Kirkorian, Elizabeth A Offermann, Doris D Lin, Anne M Comi, Bernard A Cohen
OBJECTIVE: To determine whether the size of the birthmark in patients with Sturge-Weber syndrome (SWS) who have brain involvement can help predict neurologic disability. STUDY DESIGN: Fifty-one patients with SWS with facial birthmarks and brain involvement documented on magnetic resonance imaging were included in this retrospective chart review. A neuroradiologist, blinded to all clinical information, assigned a previously validated SWS neuroimaging score. A pediatric neurologist prospectively assigned previously validated neurologic severity scores, based on seizures, hemiparesis, visual field cut, and cognitive impairments...
July 12, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28710712/headache-and-visual-impairment-after-twin-birth-a-challenging-diagnosis
#19
Alberto Fortini, Massimo Cincotta, Antonio Faraone, Cristina Baruffi, Giovanni Carrieri, Nicola Limbucci, Costanza Boccadori, Gabriele Nenci
No abstract text is available yet for this article.
July 14, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28710524/altered-n100-potential-associates-with-working-memory-impairment-in-parkinson-s-disease
#20
Tua Annanmaki, Kirsi Palmu, Kari Murros, Juhani Partanen
The diagnosis of cognitive impairment and dementia often occurring with Parkinson's disease (PD) is still based on the clinical picture and neuropsychological examination. Ancillary methods to detect cognitive decline in these patients are, therefore, needed. Alterations in the latencies and amplitudes of evoked response potential (ERP) components N100 and P200 have been described in PD. Due to limited number of studies their relation to cognitive deficits in PD remains obscure. The present study was designed to examine if alterations in the N100- and P200-potentials associate with neuropsychological impairment in PD...
July 14, 2017: Journal of Neural Transmission
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