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Results 451 - 500 of 3186
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Hunter F F Medical and Sports Science Department, Southampton Football Club, Southampton, United - - 2014
This study compared the intensity distribution of time-motion analysis data, when speed zones were categorized by different methods. 12 U18 players undertook a routine battery of laboratory- and field-based assessments to determine their running speed corresponding to the respiratory compensation threshold (RCT), maximal aerobic speed (MAS), maximal oxygen consumption (vV˙O2max) ...
Yoshida Tomoe T Department Otorhinolaryngology, Toho University , Sakura City, Chiba , - - 2014
The antero-posterior (AP) body tracking test (BTT) showed that the dominant foot could affect the tilt angle of the sway movement, delineated by primary component analysis. Differences associated with the dominant foot could represent the difference in space perception of each person. To examine whether the dominant foot could affect ...
Rampinini E E S. S. MAPEI srl, Human Performance Laboratory, Olgiate Olona, - - 2014
We compared the accuracy of 2 GPS systems with different sampling rates for the determination of distances covered at high-speed and metabolic power derived from a combination of running speed and acceleration. 8 participants performed 56 bouts of shuttle intermittent running wearing 2 portable GPS devices (SPI-Pro, GPS-5 Hz and MinimaxX, ...
Ghoul Asila A Institute of Marine Sciences, Long Marine Laboratory, University of California Santa Cruz, Santa Cruz, 95060, CA, - - 2014
In this study we examine the auditory capabilities of the sea otter (Enhydra lutris), an amphibious marine mammal that remains virtually unstudied with respect to its sensory biology. We trained an adult male sea otter to perform a psychophysical task in an acoustic chamber and at an underwater apparatus. Aerial ...
Schluessel V V Institute of Zoology, Rheinische Friedrich-Wilhelms-Universität Bonn, Poppelsdorfer Schloss, Meckenheimer Allee 169, 53115, Bonn, Germany, - - 2014
Despite convincing data collected by microspectrophotometry and molecular biology, rendering sharks colourblind cone monochromats, the question of whether sharks can perceive colour had not been finally resolved in the absence of any behavioural experiments compensating for the confounding factor of brightness. The present study tested the ability of juvenile grey ...
Linkenauger Sally A SA Lancaster University - - 2014
The hand is a reliable and ecologically useful perceptual ruler that can be used to scale the sizes of close, manipulatable objects in the world in a manner similar to the way in which eye height is used to scale the heights of objects on the ground plane. Certain objects ...
van de Kerk Madelon M Department of Wildlife Ecology and Conservation, University of Florida, 110 Newins-Ziegler Hall, Gainesville, FL, 32611-0430, - - 2014
Animals must move to find food and mates, and to avoid predators; movement thus influences survival and reproduction, and ultimately determines fitness. Precise description of movement and understanding of spatial and temporal patterns as well as relationships with intrinsic and extrinsic factors is important both for theoretical and applied reasons. ...
Celichowski Jan J University School of Physical Education in Poznan - - 2014
The unfused tetanic contractions evoked by trains of stimuli at variable interpulse intervals (IPIs) were recorded for 10 fast fatigable (FF), 10 fast resistant (FR) and 10 slow (S) motor units (MUs), and subsequently decomposed using a mathematical algorithm into trains of twitch-shape responses to successive stimuli. The mean stimulation ...
Roerdink Melvyn M Faculty of Human Movement Sciences, MOVE Research Institute Amsterdam, VU University Amsterdam, Van der Boechorststraat 9, 1081 BT, Amsterdam, The Netherlands, - - 2014
During walking on an instrumented treadmill with an embedded force platform or grid of pressure sensors, center-of-pressure (COP) trajectories exhibit a characteristic butterfly-like shape, reflecting the medio-lateral and anterior-posterior weight shifts associated with alternating steps. We define "gaitography" as the analysis of such COP trajectories during walking (the "gaitograms"). It ...
Chen Luke L From the Central Clinical School (L.C., G.M.H., S.A.), Faculty of Medicine, University of Sydney; and Institute of Clinical Neurosciences (L.C., M.T., G.M.H., S.A.), Royal Prince Alfred Hospital, Sydney, Australia. - - 2014
We sought to quantify and compare angular vestibulo-ocular reflex (aVOR) gain and compensatory saccade properties elicited by the head impulse test (HIT) in pontine-cerebellar stroke (PCS) and vestibular neuritis (VN). Horizontal HIT was recorded ≤7 days from vertigo onset with dual-search coils in 33 PCS involving the anterior inferior, posterior ...
Ronconi Robert A RA Department of Biology, Acadia University, 33 Westwood Avenue, Wolfville, NS B4P 2R6, Canada. Electronic address: - - 2014
Thousands of oil and gas platforms are currently operating in offshore waters globally, and this industry is expected to expand in coming decades. Although the potential environmental impacts of offshore oil and gas activities are widely recognized, there is limited understanding of their impacts on migratory and resident birds. A ...
Dewey James B JB Roxelyn and Richard Pepper Department of Communication Sciences and Disorders, Northwestern University, 2240 Campus Drive, Evanston, IL, 60208, USA, - - 2014
Medial olivocochlear (MOC) influence on cochlear mechanics can be noninvasively, albeit indirectly, explored via the effects of contralateral acoustic stimulation (CAS) on otoacoustic emissions. CAS-mediated effects are particularly pronounced for spontaneous otoacoustic emissions (SOAEs), which are typically reduced in amplitude and shifted upward in frequency by CAS. We investigated whether ...
Lewis James D JD Boys Town National Research Hospital, 555 North 30th Street, Omaha, NE, 68131, USA, - - 2014
Intermodulation distortion has been hypothesized as a mechanism contributing to the generation of short-latency (SL) components in the transient-evoked otoacoustic emission (TEOAE). Presumably, nonlinear interactions between the frequency components within the evoking stimulus induce cochlear distortion products, which mix in the cochlea and ear canal with reflected energy from each ...
Magnotti John F JF Department of Neurobiology & Anatomy, University of Texas Medical School at Houston, 6431 Fannin St., Suite G.550, Houston, TX, 77030, USA, - - 2014
In the McGurk effect, incongruent auditory and visual syllables are perceived as a third, completely different syllable. This striking illusion has become a popular assay of multisensory integration for individuals and clinical populations. However, there is enormous variability in how often the illusion is evoked by different stimuli and how ...
Borst Alexander A Department of Circuits, Computation, Models, Max-Planck-Institute of Neurobiology, Am Klopferspitz 18, 82152, Martinsried, - - 2014
Detecting the direction of image motion is important for visual navigation as well as predator, prey and mate detection and, thus, essential for the survival of all animals that have eyes. However, the direction of motion is not explicitly represented at the level of the photoreceptors: it rather needs to ...
Tartz Robert R Qualcomm Research, San Diego, California, - - 2014
Skin conductance (SC) reflects stimulus significance and can be measured by integrating electrodes directly onto a smartphone housing such that they are naturally contacted when gripped. However, grip artifacts naturally arise during operation since grip forces can vary. We explored the effects of grip force on SC to determine feasibility ...
Hughes Michelle L ML Boys Town National Research Hospital, Lied Learning and Technology Center, Omaha, Nebraska, - - 2014
In newer-generation Cochlear Ltd. cochlear implants, two adjacent electrodes can be electrically coupled to produce a single contact or "dual electrode" (DE). The goal of the present study was to evaluate whether relatively large impedance differences (>3.0 kOhms) between coupled electrodes affect the excitation pattern and pitch percepts produced by ...
Cogno Soledad Gonzalo SG Centro Atómico Bariloche and Instituto Balseiro, San Carlos de Bariloche, Rio Negro 8400, Argentina - - 2014
The reliability of a spiking neuron depends on the frequency content of the driving input signal. Previous studies have shown that well above threshold, regularly firing neurons generate reliable responses when the input signal resonates with the firing frequency of the cell. Instead, well below threshold, reliable responses are obtained ...
Landwehr Klaus K Johannes Gutenberg-Universität Mainz, Mainz, Germany. Electronic address: - - 2014
With regard to impending object-object collisions, observers may use different sources of information to judge time to contact (tC). We introduced changes of the observer's vantage point to test among three sets of hypotheses: (1) Observers may use a distance-divided-by-velocity algorithm or, alternatively, elaborated τ-formulae, all of which give exact ...
Lai Wei - - 2014
The light distributions in different tunnel zones have different requirements in order to meet the driver's visual system. In this paper, the light intensity distributions of tunnel lamps in different zones of a long tunnel are optimized separately. A common nonlinear optimization approach is proposed to minimize the consuming power ...
Krasnozhon Daria D Electrical Engineering Institute, Ecole Polytechnique Federale de Lausanne (EPFL) , CH-1015 Lausanne, - - 2014
The presence of a direct band gap1-4 and an ultrathin form factor5 has caused a considerable interest in two-dimensional (2D) semiconductors from the transition metal dichalcogenides (TMD) family with molybdenum disulfide (MoS2) being the most studied representative of this family of materials. While diverse electronic elements,6,7 logic circuits,8,9 and optoelectronic ...
Musall Simon S 1] Brain Research Institute, University of Zurich, Zurich, Switzerland. [2] Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland. [3] Neuroscience Center Zurich, University of Zurich and ETH Zurich, Zurich, - - 2014
Neocortical responses typically adapt to repeated sensory stimulation, improving sensitivity to stimulus changes, but possibly also imposing limitations on perception. For example, it is unclear whether information about stimulus frequency is perturbed by adaptation or encoded by precise response timing. We addressed this question in rat barrel cortex by comparing ...
Jia Jia - - 2014
Occlusion culling is an important process that produces correct depth cues for observers in holographic displays, whereas current methods suffer from occlusion errors or high computational loads. We propose a fast and effective method for occlusion culling based on multiple light-point sampling planes and an inverse orthographic projection technique. Multiple ...
Wang Chenxing - - 2014
In dynamic 3D measurements, the recovering carrier signal as well as phase retrieval are important issues for single fringe image analysis. Local mean decomposition is a powerful signal demodulation tool, but it usually encounters an obstacle, namely, the mode-mixing problem. Then different components, especially noise and carrier signals, are all ...
Braunitzer Gábor G University of Szeged, Faculty of Medicine, Department of Physiology. Electronic address: - - 2014
The question regarding the exact function of the primary visual cortex (V1) in vision has been around ever since the description of residual vision after damage to this cortical area by Riddoch in 1917. In 2002, Schoenfeld and colleagues proposed that V1 can be saturated by flashes of light, by ...
Rogers Brian B Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, UK, - - 2014
In the new moon illusion, the sun does not appear to be in a direction perpendicular to the boundary between the lit and dark sides of the moon, and aircraft jet trails appear to follow curved paths across the sky. In both cases, lines that are physically straight and parallel ...
Küblböck Martin M MR Center of Excellence, Center for Medical Physics and Biomedical Engineering, Medical University of Vienna, - - 2014
The (fractional) amplitudes of low-frequency fluctuations (f)ALFF are popular measures for the magnitude of low-frequency oscillations in resting-state fMRI (R-fMRI) data. Both measures can be directly derived from the spectral power of R-fMRI time courses. Numerous studies suggest that ALFF and fALFF might be used as biomarkers for a variety ...
Molina-Rueda Francisco F Motion Analysis, Ergonomics, Biomechanics and Motor Control Laboratory (LAMBECOM). Faculty of Health Sciences. Rey Juan Carlos University (Madrid, Spain). Electronic address: - - 2014
Currently, there is a lack of knowledge about whether subjects with traumatic UTA have a compromised ability to voluntarily move their center of gravity (COG) to positions within the limits of stability. To analyze the ability to voluntarily move the COG to positions within the limits of stability in a ...
Larivière Christian - - 2014
Research suggests that in some patients with low back pain, lumbar belts (LB) may derive secondary prophylactic benefits. It remains to be determined, however, which patients are most likely to benefit from prophylactic LB use, and which LB design is optimal for this purpose. The objective of this study was ...
Stadig Sarah M SM SLU, Department of Animal Health and Welfare, Skara, Sweden - - 2014
Physical orthopaedic examination in cats does not always reveal signs of lameness and no objective gait analysis method has yet been standardised for use in cats. The aims of the present study were to define appropriate parameters for pressure mat analyses during walk and jump, and to define reference values ...
Mortimer Beth B University of Oxford, Department of Zoology, Oxford, OX1 3PS, - - 2014
The forced reeling of silkworms offers the potential to produce a spectrum of silk filaments, spun from natural silk dope and subjected to carefully controlled applied processing conditions. Here we demonstrate that the envelope of stress-strain properties for forced reeled silks can encompass both naturally spun cocoon silk and unnaturally ...
Gomez-Polo Priscila P Institute for Research and Technology in Food and Agriculture (IRTA), Entomology, Carretera de Cabrils, Km. 2, E-08348, Cabrils, (Barcelona), - - 2014
Hoverflies (Diptera: Syrphidae) are generalist predators of a great variety of pests. Nasonovia ribisnigri (Hemiptera: Aphididae) and Frankliniella occidentalis (Thysanoptera: Thripidae) are two common pests in Mediterranean lettuce crops, where they occur alongside alternative prey (e.g., Collembola). A semi-field experiment was conducted in an experimental lettuce plot where hoverfly predation ...
Höbel Gerlinde G Behavioral and Molecular Ecology Group, Department of Biological Sciences University of Wisconsin-Milwaukee, 3209N. Maryland Ave., Milwaukee, WI 53201, USA. Electronic address: - - 2014
Communication plays a central role in the behavioral ecology of many animals, yet the background noise generated by large breeding aggregations may impair effective communication. A common behavioral strategy to ameliorate noise interference is gap detection, where signalers display primarily during lulls in the background noise. When attempting gap detection, ...
Charaziak Karolina K KK Department of Communication Sciences and Disorders, School of Communication, Northwestern University, 2240 Campus Drive, Evanston, IL, 60208-2952, USA, - - 2014
It has been suggested that the tuning of the cochlear filters can be derived from measures of otoacoustic emissions (OAEs). Two approaches have been proposed to estimate cochlear frequency selectivity using OAEs evoked with a single tone (stimulus-frequency (SF)) OAEs: based on SFOAE group delays (SF-GDs) and on SFOAE suppression ...
Römer Heiner H Institute of Zoology, Karl-Franzens University Graz, Universitätsplatz 2, 8010, Graz, Austria, - - 2014
When insects communicate by sound, or use acoustic cues to escape predators or detect prey or hosts they have to localize the sound in most cases, to perform adaptive behavioral responses. In the case of particle velocity receivers such as the antennae of mosquitoes, directionality is no problem because such ...
Farmehini Vahid V Department of Electrical & Computer Engineering, University of Virginia, Charlottesville, VA 22904, USA. - - 2014
Insulator-based dielectrophoresis enables contact-less separation and analysis of biosystems, but it is unable to operate effectively in the MHz frequency range, which is necessary for the manipulation of biological cells based on the characteristic electrophysiology of their cytoplasm or biomolecular preconcentration based on their unique conformation. To address the steep ...
Kim Kwangyoon K Faculty of Nanotechnology and Advanced Material Engineering, HMC, and GRI, Sejong University, Seoul, - - 2014
A quartz tuning fork was used instead of cantilever as a force sensor for the atomic force microscope. A tungsten tip was made by electrochemical etching from a wire of 50 µm diameter. In order to have mechanical stability of the tuning fork, it was attached on an alumina plate. The ...
Wang Yinting - - 2014
We address the problem of removing video color tone jitter that is common in amateur videos recorded with handheld devices. To achieve this, we introduce color state to represent the exposure and white balance state of a frame. The color state of each frame can be computed by accumulating the ...
Butail Sachit S Indraprastha Institute of Information Technology Delhi (IIITD), New Delhi, India; Department of Mechanical and Aerospace Engineering, New York University Polytechnic School of Engineering, Brooklyn, NY, - - 2014
In animal studies, robots have been recently used as a valid tool for testing a wide spectrum of hypotheses. These robots often exploit visual or auditory cues to modulate animal behavior. The propensity of zebrafish, a model organism in biological studies, toward fish with similar color patterns and shape has ...
Supej Matej M Department of Biomechanics, University of Ljubljana, Ljubljana, - - 2014
Numerous environmental factors can affect alpine ski racing performance, including the steepness of the slope. However, little research has focused on this factor. Accordingly, our aim was to determine the impact of the steepness of the slope on the biomechanics of World Cup slalom ski racers. We collected three-dimensional kinematic ...
Zhu Congcong - - 2014
Stimuli-responsive polymers play an important role in many biomedical technologies. Light responsive polymers are particularly desirable because the parameters of irradiated light and diverse photoactive chemistries produce a large number of combinations between functional materials and associated stimuli. This review summarizes recent advances in utilizing photoactive chemistries in macromolecules for ...
Bueno Murilo José De Oliveira MJ a Laboratory of Applied Biomechanics , State University of Londrina , Londrina , - - 2014
The purpose of this study was to measure and characterise the distances covered by Brazilian professional futsal players. The trajectories of 93 players during five matches were obtained using an automatic tracking method. The distances covered were analysed for different game conditions: over the entire game and during the times ...
Zeiders Katharine H KH Department of Human Development and Family Studies, University of Missouri, 314 Gentry Hall, Columbia, MO 65211, USA. Electronic address: - - 2014
Discrimination is theorized to set in motion a neuroendocrine response, which includes cortisol secretion from the hypothalamic-pituitary-adrenal axis. Repeated exposure to perceived discrimination is thought to contribute to alterations in diurnal cortisol rhythms and to have implications for health. Discrimination may have particularly strong effects on racial/ethnic minority individuals, based ...
Bishop Chris C School of Health Sciences, University of South Australia, Australia. Electronic address: - - 2014
To investigate in-shoe foot kinematics, holes are often cut in the shoe upper to allow markers to be placed on the skin surface. However, there is currently a lack of understanding as to what is an appropriate size. This study aimed to demonstrate a method to assess whether different diameter ...
Shen ZhuoHua Z School of Mechanical Engineering, Purdue University, 585 Purdue Mall, West Lafayette, IN 47906, - - 2014
Despite the neuromechanical complexity and wide diversity of running animals, most run with a center-of-mass motion that is similar to a simple mass bouncing on a spring. Further, when animals׳ effective leg stiffness is measured and normalized for size and weight, the resulting relative leg stiffness that most animals prefer ...
Kalamangalam Giridhar P GP Department of Neurology, University of Texas Health Science Center, Houston, TX, USA. Electronic address: - - 2014
Visually-obvious abnormalities in the resting baseline EEG - slowing, spiking and high-frequency oscillations (HFOs) - are cardinal, though incompletely understood, features of the seizure onset zone in focal epilepsy. We hypothesized that evidence of cortical network dysfunction in temporal lobe epilepsy (TLE) would persist in the absence of visually-classifiable abnormalities ...
Villeger David D University of Toulouse, UPS, PRISSMH, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France. Electronic address: - - 2014
In walking experimental conditions, subjects are sometimes unable to perform two steps on two different forceplates. This leads the authors to develop methods for discerning right and left ground reaction data while they are summed during the double support in walking. The aim of this study is to propose an ...
Stember Joseph N JN Department of Radiology, Columbia University Medical Center, 180 Fort Washington Avenue, 3rd Floor Harkness Pavillion, Room 313, New York, NY, 10032, USA, - - 2014
Surface morphology and shape in general are important predictors for the behavior of solid-type lung nodules detected on CT. More broadly, shape analysis is useful in many areas of computer-aided diagnosis and essentially all scientific and engineering disciplines. Automated methods for shape detection have all previously, to the author's knowledge, ...
Elliott Lindsay C C LC Department of Chemistry, University of Illinois at Urbana-Champaign, 600 S. Mathews Ave., Urbana, IL 61801, USA. pbohn@nd.edu - - 2014
Correction for 'Trajectory analysis of single molecules exhibiting non-Brownian motion' by Lindsay C. C. Elliott et al., Phys. Chem. Chem. Phys., 2011, 13, 4326-4334.
Domingue Michael J MJ http://orcid.org/0000-0002-3055-3533 Departments of Entomology, mjd29@psu.edu - - 2014
Recent advances in nanoscale bioreplication processes present the potential for novel basic and applied research into organismal behavioral processes. Insect behavior potentially could be affected by physical features existing at the nanoscale level. We used nano-bioreplicated visual decoys of female emerald ash borer beetles (Agrilus planipennis) to evoke stereotypical mate-finding ...
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