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Collison Frederick T FT *Pangere Center for Hereditary Retinal Diseases, The Chicago Lighthouse for People Who Are Blind or Visually Impaired, Chicago, Illinois; †Department of Ophthalmology, University of Illinois at Chicago, Chicago, Illinois; and Departments of ‡Ophthalmology, and §Pathology and Cell Biology, Columbia University, New York, New - - 2014
To investigate psychophysical thresholds in Stargardt disease with the full-field stimulus test (FST). Visual acuity, spectral domain optical coherence tomography, full-field electroretinogram, and FST measurements were made in 1 eye of 24 patients with Stargardt disease. Dark-adapted rod FST thresholds were measured with short-wavelength stimuli, and cone FST thresholds were ...
Mellor Fiona E FE Institute for Musculoskeletal Research and Clinical Implementation, Anglo-European College of Chiropractic, Parkwood Road, Bournemouth, BH5 2DF, - - 2014
Identifying biomechanical subgroups in chronic, non-specific low back pain (CNSLBP) populations from inter-vertebral displacements has proven elusive. Quantitative fluoroscopy (QF) has excellent repeatability and provides continuous standardised inter-vertebral kinematic data from fluoroscopic sequences allowing assessment of mid-range motion. The aim of this study was to determine whether proportional continuous IV ...
Tarita-Nistor Luminita L *PhD †MD Vision Science Research Program, Toronto Western Hospital, Toronto, Ontario, Canada (all authors); Centre for Vision Research, York University, Toronto, Ontario, Canada (LT-N, MJS, EGG); and Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada (SH, MJS, SNM, - - 2014
Large moving scenes can induce a sensation of self-motion in stationary observers. This illusion is called "vection." Glaucoma progressively affects the functioning of peripheral vision, which plays an important role in inducing vection. It is still not known whether vection can be induced in these patients and, if it can, ...
Priesol Adrian J AJ Department of Otology & Laryngology, Harvard Medical School, Boston, Massachusetts, - - 2014
We measured vestibular perceptual thresholds in patients with idiopathic bilateral vestibulopathy to assess the distribution of peripheral vestibular damage in this disorder. Thresholds were measured with standard psychometric techniques in 4 patients and compared with thresholds in normal subjects and patients with completely absent peripheral vestibular function. Motion paradigms included ...
Tudor G Samuel J GS Department of Medical Physics and Clinical Engineering, Cambridge University Hospitals NHS Foundation Trust, Box 152, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0QQ, United Kingdom and Department of Oncology, Cambridge University, Cambridge CB2 0QQ, United - - 2014
Dose differences from those planned can occur due to the respiratory interplay effect on helical tomotherapy. The authors present a technique to calculate single-fraction doses in three-dimensions resulting from craniocaudal motion applied to a patient CT set. The technique is applied to phantom and patient plans using patient respiratory traces. ...
Chang Yen-Liang YL Department of Otolaryngology Head and Neck Surgery, Cathay General Hospital, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, Taipei, - - 2014
Acoustic analysis is often used in speech evaluation but seldom for the evaluation of oral prostheses designed for reconstruction of surgical defect. This study aimed to introduce the application of acoustic analysis for patients with velopharyngeal insufficiency (VPI) due to oral surgery and rehabilitated with oral speech-aid prostheses. The pre- ...
Iwasaki Shinichi S From the Department of Otolaryngology, Faculty of Medicine (S.I., M.K., Y. Yoshifuji, C.F.), and Educational Physiological Laboratory, Graduate School of Education (Y. Yamamoto, F.T.), The University of Tokyo, - - 2014
To examine the effect of an imperceptible level of galvanic vestibular stimulation (GVS), delivered as zero-mean current noise (noisy GVS), on postural performance in healthy subjects as well as in patients with bilateral peripheral vestibular dysfunction. White noise GVS with an amplitude ranging from 0 to 1,000 μA was applied ...
Pineles Stacy L - - 2014
Patients with strabismus often complain of difficulty navigating through visually stimulating environments without clear explanation for this symptom. Binocular summation (BiS), defined as the superiority of binocular over monocular viewing on visual threshold tasks, is decreased in conditions that cause large interocular differences in visual acuity, but is not well ...
Breine Bastiaan B 1Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium 2Exeter Research, Inc., Brentwood, - - 2014
This study assessed initial foot contact patterns (IFCP) in a large group of distance runners and the effect of speed on the IFCP. We determined the strike index, to classify the runners in IFCP groups, at 4 speeds (3.2, 4.1, 5.1, 6.2 m[BULLET OPERATOR]s) by measuring center of pressure (COP) ...
Khoo Hui Ming HM Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, - - 2014
Low-frequency, bilateral stimulation of the subthalamic nucleus can improve axial symptoms of advanced Parkinson's disease (PD), but it is not particularly effective for segmental symptoms. The optimal contacts for low-frequency (60 Hz) and high-frequency (130 Hz) single monopolar stimulation were determined. Then, in a randomized, double-blind, prospective crossover manner, 60-Hz ...
Williams David M DM Department of Environmental and Forest Biology, State University of New York College of Environmental Science and Forestry, Syracuse, New York, United States of - - 2014
Contacts between hosts are essential for transmission of many infectious agents. Understanding how contacts, and thus transmission rates, occur in space and time is critical to effectively responding to disease outbreaks in free-ranging animal populations. Contacts between animals in the wild are often difficult to observe or measure directly. Instead, ...
Ito Yuji Y Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan. - - 2014
A new method is proposed to estimate the contact region between a sensor and an object using a deformable tactile sensor. The sensor consists of a charge-coupled device (CCD) camera, light-emitting diode (LED) lights and a deformable touchpad. The sensor can obtain a variety of tactile information, such as the ...
Alvarado-Rojas C C Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM) INSERM UMRS 975 - CNRS UMR 7225-UPMC, Hôpital de la Pitié-Salpêtrière, Paris, - - 2014
Recent evidence suggests that some seizures are preceded by preictal changes that start from minutes to hours before an ictal event. Nevertheless an adequate statistical evaluation in a large database of continuous multiday recordings is still missing. Here, we investigated the existence of preictal changes in long-term intracranial recordings from ...
Bonfiglio Luca L Department of Translational Research on New Technologies in Medicine and Surgery, School of Physical Medicine and Rehabilitation, University of Pisa, Pisa, - - 2014
Recently, the cortical source of blink-related delta oscillations (delta BROs) in resting healthy subjects has been localized in the posterior cingulate cortex/precuneus (PCC/PCu), one of the main core-hubs of the default-mode network. This has been interpreted as the electrophysiological signature of the automatic monitoring of the surrounding environment while subjects ...
McDonald Colin P CP Department of Orthopedics, Herrick Davis Motion Analysis Laboratory, - - 2013
Object Cervical arthroplasty with an artificial disc (AD) has emerged as an alternative to anterior cervical discectomy and fusion (ACDF) for the management of cervical spondylosis. This study aims to provide 3D motion analysis data comparing patients after ACDF and AD replacement. Methods Ten patients who underwent C5-6 ACDF and ...
Fouquet Marina Lang ML Santa Casa de Misericórdia de São Paul, Hospital Irmandade, São PauloSP, Brazil, Discipline of Head and Neck Surgery, Hospital Irmandade Santa Casa de Misericórdia de São Paulo- São Paulo (SP), - - 2013
The primary purpose of this study was to assess the relationship between pharyngoesophageal segment (PES) configuration and narrow-band spectrogram of tracheoesophageal voices. This study included 30 total laryngectomees tracheoesophageal speakers. Patients were assessed by videofluoroscopy (VF), during deglutition and voicing, and the vowel /a/ was recorded for spectrographic analysis. The ...
Wang Hongsheng H Department of Biomechanics, Hospital for Special Surgery, New York, NY 10021, United - - 2013
The spatial distribution and pattern of local contact stresses within the knee joint during activities of daily living have not been fully investigated. The objective of this study was to determine if common contact stress patterns exist on the tibial plateaus of human knees during simulated gait. To test this ...
Dowdell Stephen - - 2013
Purpose: To compare motion effects in intensity modulated proton therapy (IMPT) lung treatments with different levels of intensity modulation.Methods: Spot scanning IMPT treatment plans were generated for ten lung cancer patients for 2.5Gy(RBE) and 12Gy(RBE) fractions and two distinct energy-dependent spot sizes (σ ∼8-17 mm and ∼2-4 mm). IMPT plans ...
Janeček V V Physique et Mécanique des Milieux Hétérogènes, UMR 7636 ESPCI-CNRS-Université Paris-Diderot-Université P. M. Curie, 10 rue Vauquelin, 75005 Paris, France and ESEME, Service des Basses Températures, UMR-E CEA/UJF-Grenoble 1, INAC, Grenoble, - - 2013
Interfacial flows close to a moving contact line are inherently multiscale. The shape of the interface and the flow at meso- and macroscopic scales inherit an apparent interface slope and a regularization length, both named after Voinov, from the microscopic inner region. Here, we solve the inner problem associated with ...
Santos-Concejero Jordan - - 2013
The main purpose of this study was to investigate the relationship between a novel biomechanical variable, the stride angle, and running economy (RE) in a homogenous group of long-distance athletes. Twenty-five well-trained male runners completed 4 minute running stages on a treadmill at different set velocities. During the test, biomechanical ...
Di Biase Luigi - - 2013
During radiofrequency ablation, effective contact is crucial in determining lesions efficacy. In this study we compared operators' ability to assess contact pressure using visual and tactile feedbacks together or alone in an experimental model. In a in-vitro experimental setup replicating manual catheter manipulation, and recording the applied force, evaluators were ...
Viner Tabitha C - - 2013
Mortality due to electrical injury in wildlife may occur in the form of lightning strike or power line contact. Evidence of electrical contact may be grossly obvious, with extensive singeing, curling, and blackening of feathers, fur, or skin. Occasionally, changes may be subtle, owing to lower current or reduced conductivity, ...
Fleisig Glenn S GS American Sports Medicine Institute, Birmingham, AL 35205, USA. - - 2013
The purpose of this study was to quantify trunk axial rotation and angular acceleration in pitching and batting of elite baseball players. Healthy professional baseball pitchers (n = 40) and batters (n = 40) were studied. Reflective markers attached to each athlete were tracked at 240 Hz with an eight-camera ...
Vasudevan Balamurali - - 2013
The aim of the present study was to compare the objective and subjective visual performance of three different soft multifocal contact lenses. 10 subjects (habitual soft contact lens wearers) between the ages of 40 and 45 years participated in the study. Three different multifocal silicone hydrogel contact lenses (Acuvue Oasys, ...
Clatworthy Philip L - - 2013
Background: Homonymous visual field defects (VFD) are common following stroke, and often recover, partially or fully, by unknown mechanisms. In clinical practice, visual field recovered on perimetry is often considered perceptually normal. However, studies have shown contrast sensitivity (CS) deficits in patients with stroke and homonymous VFD. This study investigated ...
Ticcinelli Valentina - - 2013
The haemodynamics of skin microcirculation can be quantitatively evaluated by Laser Doppler Fluxmetry (LDF). LDF signal in human skin shows periodic oscillations. Spectral analysis by wavelet transform displays six characteristic frequency intervals (FI) from 0.005 to 2 Hz, related to distinct vascular structures activities: heart (0.6-2 Hz), sympathetic respiratory (0.145-0.6 ...
Kim Chang-Hee - - 2013
The aim of this study was to characterize the clinical features and typical positional nystagmus in patients with persistent geotropic direction-changing positional nystagmus (DCPN) and address the possible pathophysiology of the disease. Furthermore, the proportion of light cupula among the patients showing geotropic DCPN was investigated to assume the incidence ...
Lockie Robert G - - 2013
The mechanisms for speed performance improvement from sprint (ST) and plyometrics (PT) training, especially relating to stance kinetics, require investigation in field sport athletes. This study determined the effects of ST and PT on 10-meter (m) sprint time (0-5, 5-10, 0-10 m intervals), step kinematics (step length and frequency, contact ...
Tsang Derek S - - 2013
Reduction of respiratory motion is desirable to reduce the volume of normal tissues irradiated, to improve concordance of planned and delivered doses, and to improve image guided radiation therapy (IGRT). We hypothesized that pretreatment lorazepam would lead to a measurable reduction of liver motion. Thirty-three patients receiving upper abdominal IGRT ...
Hayashi Tetsuo - - 2013
An in vivo kinematic MRI analysis of cervical spinal motion in human subjects. To identify associations between disc degeneration in the subaxial cervical spine and upper cervical spinal motion in patients with general age-related cervical spondylosis. The kinematic relationship between the occipital-atlantoaxial complex and subaxial cervical spine in patients with ...
Ali Musheera M - - 2013
Recently, much interest has been generated in the use of intense pulsed light (IPL) sources in the treatment of various skin conditions. However, the underlying mechanism for its therapeutic action has not been elucidated. To investigate the effect of IPL on the in vivo expression of transforming growth factor beta1 ...
Hanke Sylvia - - 2013
Using acoustic resonators, we have studied the occurrence and the magnitude of partial slip between glass spheres and polymer surfaces. The measurement relies on the shifts of resonance frequency and bandwidth, Δf and ΔΓ, induced by the contact as well as the dependence of Δf and ΔΓ on the amplitude ...
Horng Ray-Hua - - 2013
High-brightness p-side up AlGaInP-based red light emitting diodes (LEDs) with dot-patterned GaAs contact layer and surface rough structure are presented in this article. Initial LED structure of p-GaP/AlGaInP/GaAs is epitaxially grown using metal organic chemical vapor deposition technique. Using novel twice transferring process, the p-GaP layer is remained at the ...
Lewald Jörg - - 2013
Objective: Beyond visual field defects, patients with hemianopia have been suggested to perceive horizontal visual space in a distorted manner. However, the pattern of these distortions remained debatable. The aim of this study was to estimate the geometry of the visual representation of space in hemianopia using an auditory marker. ...
Timmis Matthew A - - 2013
Vision is of paramount importance in regulating adaptive gait. Using three-dimensional motion analysis, the current study investigated how central visual field loss (CFL) affects step ascent. Ten patients with chronic CFL (77±10 years) and 13 visual normal participants (72±6 years) walked up to and ascended a single step (of varying ...
Kuba Robert - - 2013
The main purpose of this retrospective analysis was to evaluate the incidence and lateralization value of rhythmic ictal nonclonic hand (RINCH) motions in patients with temporal lobe epilepsy (TLE), who were classified as Engel I at least 2 years after epilepsy surgery. We analyzed the distribution of ictal activity at ...
Meccia Bradley - - 2013
Previous in vivo fluoroscopy studies have documented that axial rotation for patients having a TKA was significantly less than those having a normal knee. In fact, many subjects having a TKA experience a reverse axial rotation pattern where the femur internally rotates with increasing flexion. However, no previous studies have ...
Lin Yuting - - 2013
The objective of this work is to test the validity of the Gaussian approximation for prostate motion through characterization of its spatial distribution. Real-time intrafraction prostate motion was observed using Calypso 4-dimensional (4D) nonradioactive electromagnetic tracking system. We report the results from a total of 1024 fractions from 31 prostate ...
Peng Y - - 2013
Purpose: To create a patient respiratory management system and patient self-practice tool using the Wii remote, a widely available consumer hardware product.Methods: The Wii remote (Wiimote) (Nintendo, Redmond, WA) contains an infrared (IR) camera that can track up to four spots whose coordinates are reported to a host computer via ...
Troupis John M - - 2013
A 22-year-old man with no history of trauma and normal plain films, ultrasound, and magnetic resonance imaging presents with several months of increasingly severe pain and clicking in the right wrist. He is clinically diagnosed with midcarpal instability and undergoes a 4-dimensional computed tomography scan of his wrist for further ...
Tan Yee Yong - - 2013
The utilization of radio-frequency (RF) communication technology in healthcare application, especially in the transmission of health-related data such as biomedical signal and patient information is often perturbed by electromagnetic interference (EMI). This will not only significantly reduce the accuracy and reliability of the data transmitted, but could also compromise the ...
Raghuram Aparna A Department of Ophthalmology, Boston Children's Hospital, Boston, Massachusetts 02215, USA. - - 2013
To investigate photoreceptor and postreceptor retinal function in patients with congenital stationary night blindness (CSNB). Forty-one patients with CSNB (ages 0.19-32 years) were studied. ERG responses to a series of full-field stimuli were obtained under scotopic and photopic conditions and were used to categorize the CSNB patients as complete (cCSNB) ...
De Bortoli Alessandro - - 2013
 INTRODUCTION: Previous studies have validated the use of impedance fall as a measure of the effects of ablation. We investigated whether catheter-to-tissue contact force correlated with impedance fall during atrial fibrillation ablation. A total of 394 ablation points from 35 patients who underwent atrial fibrillation ablation were selected and analyzed ...
Fenton L - - 2013
BACKGROUND: A preliminary investigation showed that ultraviolet (UV) emissions from compact fluorescent lamps (CFLs) can pose a risk to the skin of photosensitive individuals. OBJECTIVES: To carry out a larger scale study, in patients with a range of photodermatoses, to assess this risk. To determine a safe alternative light source ...
Moura Ana Laura A - - 2013
Purpose. To investigate the pupillary light reflex (PLR) of patients with severe loss of vision due to Leber's Hereditary Optic Neuropathy (LHON) in the context of a proposed preservation of melanopsin-expressing retinal ganglion cells (mRGCs). Methods. Ten LHON patients (7 M; 51.6 ±14.1 yo) with visual acuities ranging from 20/400 ...
Oda Kazuha - - 2013
OBJECTIVE: Variations in the effects of masking noise were evaluated in different pathologies of sensorineural hearing loss. STUDY DESIGN: Retrospective chart review. SETTING: Tertiary referral center. PATIENTS: Fifty-five ears of 30 patients with sensorineural hearing loss who underwent noise audiometry in the Department of Otolaryngology-Head and Neck Surgery, Tohoku University ...
Meuleman Jos - - 2013
Robotic gait training has developed since the end of the 20(th) century, yet there is much room for improvement in the design of the robots. With the conventional exoskeleton structures, donning of patients in a gait trainer usually is a cumbersome process due to the need of joint alignments and ...
Shibuta Yoshiko - - 2013
OBJECTIVE: Amyotrophic lateral sclerosis (ALS) is characterised by the increased excitability of motoneurons and heterogeneous loss of axons. The heterogeneous nature of the disease process among fibres may show variability of excitability in ALS. METHODS: Multiple nerve excitability tests were performed in 28 ALS patients and 23 control subjects, by ...
Suzuki Akinobu - - 2013
Study Design. Retrospective analysis of kinetic magnetic resonance images (kMRIs).Objective. To define the prevalence of degenerative cervical spondylolisthesis in symptomatic patients and to analyze the motion characteristics and influence on the spinal canal at the affected level.Summary of Background Data. When compared to lumbar spondylolisthesis, there are few studies evaluating ...
Sedda A - - 2013
Visual illusions have been used to explore implicit perception in neglect. Previous studies have highlighted differences between length and surface illusion perception in neglect, but much less is known about depth illusion perception. In the Ponzo illusion (a classic depth illusion), two converging oblique lines modulate the perceived length of ...
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