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Results 201 - 250 of 3186
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Lakes-Harlan Reinhard R Institute for Animal Physiology, AG Integrative Sensory Physiology, Justus-Liebig-Universität Gießen, IFZ, Heinrich-Buff-Ring 26, 35392, Giessen, Germany, - - 2014
Two taxa of parasitoid Diptera have independently evolved tympanal hearing organs to locate sound producing host insects. Here we review and compare functional adaptations in both groups of parasitoids, Ormiini and Emblemasomatini. Tympanal organs in both groups originate from a common precursor organ and are somewhat similar in morphology and ...
Noh Jung Ho JH Department of Orthopaedic Surgery, Graduate School of Medicine, Kangwon National University, Chuncheon, South - - 2014
Full-length standing anteroposterior radiograph is a standard protocol to evaluate the lower limb alignment in frontal plane. However, most people tend to stand or walk with feet pointing outward. The purpose of this study is to assess the femorotibial relationship as the posture changes from patellae-forward stance for the conventional ...
Carter Michael J MJ University of Ottawa - - 2014
Coordinated bimanual oscillatory movements often involve one of two intrinsically stable phasing relationships characterized as in-phase (symmetrical) or anti-phase (asymmetrical). The in-phase mode is typically more stable than anti-phase and if movement frequency is increasing during anti-phase movements, a spontaneous transition to the in-phase pattern occurs. There is converging neurophysiological ...
Choi Hyung Woo HW Department of Chemical and Materials Engineering, University of Nevada, Reno, NV 89557, - - 2014
In this review, we survey several recent developments in printing of nanomaterials for contacts, transistors, sensors of various kinds, light-emitting diodes, solar cells, memory devices, and bone and organ implants. The commonly used nanomaterials are classified according to whether they are conductive, semiconducting/insulating or biological in nature. While many printing ...
Winkler Andreas - - 2014
Optical control of cellular processes is an emerging approach for studying biological systems, affording control with high spatial and temporal resolution. Specifically designed artificial photoswitches add an interesting extension to nat-urally occurring light-regulated functionalities. However, despite a great deal of structural information, the generation of new tools cannot be based ...
Fernández A A Department of Electronics, University of Alcalá, Plaza de S. Diego, s/n, 28801 Alcalá de Henares, - - 2014
This paper describes use of Prony's method as a filter applied to multifocal visual-evoked-potential (mfVEP) signals. Prony's method can be viewed as an extension of Fourier analysis that allows a signal to be decomposed into a linear combination of functions with different amplitudes, damping factors, frequencies and phase angles. By ...
Limonta Eloisa E Department of Biomedical Sciences for Health, University of Milan, Via G. Colombo 71, 20133, Milan, Italy, - - 2014
The aim of the study was to evaluate the force control in the complete absence of visual feedback and the effect of repeated contractions without visual feedback. Twelve physically active males (age 23 ± 1 years; stature 1.74 ± 0.07 m; body mass 71 ± 6 kg) performed isometric tasks at 20, 40 and 60 % maximal voluntary contraction (MVC) ...
Zhang Ke - - 2014
Polarization-sensitive color originates from polarization-dependent reflection or transmission, exhibiting abundant light information, including intensity, spectral distribution, and polarization. A wide range of butterflies are physiologically sensitive to polarized light, but the origins of polarized signal have not been fully understood. Here we systematically investigate the colorful scales of six species ...
De Sá Teixeira Nuno Alexandre NA Institute of Cognitive Psychology, University of Coimbra, Portugal. Electronic address: - - 2014
Given its conspicuous nature, gravity has been acknowledged by several research lines as a prime factor in structuring the spatial perception of one's environment. One such line of enquiry has focused on errors in spatial localization aimed at the vanishing location of moving objects - it has been systematically reported ...
Butler John S JS Max Planck Institute for Biological Cybernetics, Spemanstrasse 38, 72076, Tübingen, Germany, - - 2014
Passive movement through an environment is typically perceived by integrating information from different sensory signals, including visual and vestibular information. A wealth of previous research in the field of multisensory integration has shown that if different sensory signals are spatially or temporally discrepant, they may not combine in a statistically ...
Stone J A JA Centre for Sport and Exercise Science, Sheffield Hallam University, Collegiate Hall, Collegiate Crescent, Sheffield, S10 2BP, UK, - - 2014
Advance visual information of a projection action and ball flight information is important for organizing dynamic interceptive actions like catching. However, how the central nervous system (CNS) manages the relationship between advance visual information and emerging ball flight information in regulating behavior is less well understood. Here, we sought to ...
Chodroff Eleanor E Department of Cognitive Science, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland - - 2014
Voicing contrasts in stop consonants are expressed by a constellation of acoustic cues. This study focused on a spectral cue present at burst onset in American English labial and coronal stops. Spectral shape was examined for word-initial, prevocalic stops of all three places of articulation in a laboratory production study ...
He Pengbo P Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Lanzhou 730000, China; and School of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, - - 2014
To efficiently deliver respiratory-gated radiation during synchrotron-based pulsed heavy-ion radiotherapy, a novel respiratory guidance method combining a personalized audio-visual biofeedback (BFB) system, breath hold (BH), and synchrotron-based gating was designed to help patients synchronize their respiratory patterns with synchrotron pulses and to overcome typical limitations such as low efficiency, residual ...
Harendt Bastian - - 2014
Common correlation-based photogrammetric 3D shape measurement techniques evaluate either temporal or spatial features. Temporal approaches achieve high accuracies but are limited to the measurement of static objects. Spatial techniques can deal with moving objects but provide relatively inaccurate results. Our goal is to combine these methods in order to measure ...
Won Jong Ho JH University of Tennessee Health Science Center, Knoxville, Tennessee - - 2014
The hypothesis of this study was that broader patterns of physiological channel interactions in the local region of the cochlea are associated with poorer spectral resolution in the same region. Electrically evoked compound action potentials (ECAPs) were measured for three to six probe electrodes per subject to examine the channel ...
Mitaim Sanya S Department of Electrical and Computer Engineering, Faculty of Engineering Thammasat University, Pathumthani 12120, - - 2014
We show that the main forbidden interval theorems of stochastic resonance hold for a correlation performance measure. Earlier theorems held only for performance measures based on mutual information or the probability of error detection. Forbidden interval theorems ensure that a threshold signal detector benefits from deliberately added noise if the ...
Yuen Foo Keng FK Environment and Occupational Health Programme, School of Health Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan; River Engineering and Urban Drainage Research Centre, Higher Institution Centre of Excellence (HICoE) for Service, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, - - 2014
Environmental noise remains a complex and fragmented interplay between industrialization, population growth, technological developments, and the living environment. Next to the circulatory diseases and cancer, noise pollution has been cited as the third epidemic cause of psychological and physiological disorders internationally. A reliable and firm relationship between the cumulative health ...
Marshall Lynne L Naval Submarine Medical Research Laboratory, Box 900, Subase NLON, Box 900, Groton, Connecticut - - 2014
Otoacoustic emission (OAE) tests of the medial-olivocochlear reflex (MOCR) in humans were assessed for viability as clinical assays. Two reflection-source OAEs [TEOAEs: transient-evoked otoacoustic emissions evoked by a 47 dB sound pressure level (SPL) chirp; and discrete-tone SFOAEs: stimulus-frequency otoacoustic emissions evoked by 40 dB SPL tones, and assessed with a ...
Dasari Paul K R PK Department of Radiology, Division of Nuclear Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01655 and Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts - - 2014
Binning list-mode acquisitions as a function of a surrogate signal related to respiration has been employed to reduce the impact of respiratory motion on image quality in cardiac emission tomography (SPECT and PET). Inherent in amplitude binning is the assumption that there is a monotonic relationship between the amplitude of ...
Baudouin Q Q Université de Nice Sophia Antipolis, CNRS, Institut Non-Linéaire de Nice, UMR 7335, F-06560, Valbonne, - - 2014
We present theoretical and experimental results of Lévy flights of light originating from a random walk of photons in a hot atomic vapor. In contrast to systems with quenched disorder, this system does not present any correlations between the position and the step length of the random walk. In an ...
Nitschmann Marc M Department of Experimental Audiology, Otto von Guericke University Magdeburg, Leipziger Strasse 44, 39120 Magdeburg, - - 2014
Discrimination thresholds for the interaural-phase difference (IPD) of a 500-Hz sinusoid were measured in the presence of a diotic notched-noise masker as a function of notch width. The reference sinusoid had zero IPD. The level was set to 3 dB above the individual masked threshold for the diotic sinusoid at the ...
Taylor Ii Russell M - - 2014
Using random per-element luminance modulation can increase the visual salience of details in a range of visualizations (2D, 3D, and ND scalar, vector, and tensor fields). Although random luminance has been used in specific designs, its wide applicability isn't reflected in visualizations, perhaps because it hasn't yet been presented as ...
Li Saiyi - - 2014
Human actions have been widely studied for their potential application in various areas such as sports, pervasive patient monitoring, and rehabilitation. However, challenges still persist pertaining to determining the most useful ways to describe human actions at the sensor, then limb and complete action levels of representation and deriving important ...
Vasić Borislav - - 2014
Fabry-Perot resonators with inserted graphene are proposed for efficient reflectance modulation from terahertz to near-infrared frequencies. The resonators' structure is simple and consists of the Bragg top mirror, the cavity with the graphene, and the metallic bottom mirror. Reflectance from the cavities is electrically controlled by adjusting the Fermi level ...
Lee Mi-Young MY Department of Physical Therapy, College of Health and Therapy, Daegu Haany University, Republic of - - 2014
[Purpose] The purpose of this study was to investigate the effect of forward head posture (FHP) on proprioception by determining the cervical position-reposition error. [Subjects and Methods] A sample population was divided into two groups in accordance with the craniovertebral angle: the FHP group and the control group. We measured ...
Deroche Mickael L D ML Department of Otolaryngology, Johns Hopkins University School of Medicine, 818 Ross Research Building, 720 Rutland Avenue, Baltimore, Maryland - - 2014
When phase relationships between partials of a complex masker produce highly modulated temporal envelopes on the basilar membrane, listeners may detect speech information from temporal dips in the within-channel masker envelopes. This source of masking release (MR) is however located in regions of unresolved masker partials and it is unclear ...
Guilford Tim T Animal Behaviour Research Group, Department of Zoology, University of Oxford, Oxford, - - 2014
Many animals, and birds in particular, are thought to use directional information from the sun in the form of a time-compensated sun compass, with predictably deviated orientation under clock shift being regarded as the litmus test of this. We suggest that this paradigm obscures a number of other ways in ...
Strelnikov N N Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, - - 2014
A short prototype (847-mm-long) of an Insertion Device (ID) with the dynamic compensation of ID magnetic forces has been designed, built, and tested at the Advanced Photon Source (APS) of the Argonne National Laboratory. The ID magnetic forces were compensated by the set of conical springs placed along the ID ...
Davis Kermit G - - 2014
This article investigates whether different interventions aimed at promoting postural change could increase body movement throughout the shift and reduce musculoskeletal discomfort. Many researchers have reported high levels of discomfort for workers that have relatively low-level demands but whose jobs are sedentary in nature. To date, few interventions have been ...
Vance Jason T JT Department of Biology, College of Charleston, Charleston, South Carolina 29424; 2Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada; 3IO Rodeo, Pasadena, California 91101; 4Department of Biology, University of Washington, Seattle, Washington 98195; 5Department of Biology, Central Michigan University, Mount Pleasant, Michigan - - 2014
Abstract During hovering flight, animals can increase the wing velocity and therefore the net aerodynamic force per stroke by increasing wingbeat frequency, wing stroke amplitude, or both. The magnitude and orientation of aerodynamic forces are also influenced by the geometric angle of attack, timing of wing rotation, wing contact, and ...
Zhou Yu Y School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, China. Electronic address: - - 2014
Roadside remote sensing measurement was used to explore the real-world emission status of light duty gasoline vehicles (LDGVs) and motorcycles in Macao. Both fuel-based and distance-based emission factors were derived using the mass balance method. The emission concentration profile of LDGVs illustrated the benefits of tightening emission standards at the ...
Linkenauger Sally A SA Department of Psychology, University of Lancaster, Lancaster, UK. Electronic address: - - 2014
Considerable empirical evidence has shown influences of the action capabilities of the body on the perception of sizes and distances. Generally, as one׳s action capabilities increase, the perception of the relevant distance (over which the action is to be performed) decreases and vice versa. As a consequence, it has been ...
Awad Louis N LN Department of Physical Therapy, University of Delaware, Newark, Delaware Graduate Program in Biomechanics and Movement Science, University of Delaware, Newark, - - 2014
Walking dysfunctions persist following poststroke rehabilitation. A major limitation of current rehabilitation efforts is the inability to identify modifiable deficits that, when improved, will result in the recovery of walking function. Previous studies have relied on cross-sectional analyses to identify deficits to target during walking rehabilitation; however, these studies did ...
Truszczynski Olaf O Department of Flight Safety, the Aeromedical Training Division, the Department of Aviation Physiology, and the Department of Aviation Psychology, Military Institute of Aviation Medicine, Warsaw, - - 2014
Truszczynski O, Lewkowicz R, Wojtkowiak M, Biernacki MP. Reaction time in pilots during intervals of high sustained G. Aviat Space Environ Med 2014; 85:1114-20. An important problem for pilots is visual disturbances occurring under +Gz acceleration. Assessment of the degree of intensification of these disturbances is generally accepted as the ...
Kuang Jianjing J Department of Linguistics, University of Pennsylvania, 619 Williams Hall, Philadelphia, Pennsylvania - - 2014
This study explores the vocal fold contact patterns of one type of phonation contrast-the tense vs lax phonation contrasts of three Yi (Loloish) languages. These contrasts are interesting because neither phonation category is very different from modal voice, and because both phonations are largely independent of the languages' tonal contrasts. ...
Yost William A WA Speech and Hearing Science, Arizona State University, P.O. Box 870102, Tempe, Arizona - - 2014
Sound source localization accuracy using a sound source identification task was measured in the front, right quarter of the azimuth plane as rms (root-mean-square) error (degrees) for stimulus conditions in which the bandwidth (1/20 to 2 octaves wide) and center frequency (250, 2000, 4000 Hz) of 200-ms noise bursts were varied. ...
Williams Daniel D Linguistics Department, Area of Excellence - Cognitive Sciences, University of Potsdam, Potsdam, - - 2014
This study compares the duration and first two formants (F1 and F2) of 11 nominal monophthongs and five nominal diphthongs in Standard Southern British English (SSBE) and a Northern English dialect. F1 and F2 trajectories were fitted with parametric curves using the discrete cosine transform (DCT) and the zeroth DCT ...
Bialic Emilie - - 2014
Commercial light-emitting diodes (LEDs) from different manufacturers were studied by means of impedance measurements in the frequency range between 75 kHz and 10 MHz. Electrical characteristics of these LEDs, such as impedance and resistance, were proven to be strongly influenced by the applied frequencies, the bias values, and the alternating-signal amplitudes. Through ...
Detcheverry F F Institut Lumière Matière, UMR5306 Université Claude Bernard Lyon 1-CNRS, Université de Lyon, 69622, Villeurbanne, France, - - 2014
We consider random walks that arise from the repetition of independent, statistically identical steps, whose nature may be arbitrary. Such unimodal motions appear in a variety of contexts, including particle propagation, cell motility, swimming of micro-organisms, animal motion and foraging strategies. Building on general frameworks, we focus on the case ...
Benson Bryce E BE University of Vermont College of Mathematics and Engineering, Burlington, VT, - - 2014
A key mechanism responsible for atrial fibrillation is multi-wavelet reentry (MWR). We have previously demonstrated that ablation in regions of increased circuit density reduces the duration of, and decreases the inducibility of MWR. In this study, we demonstrate a method for identifying local circuit density using electrogram frequency and validated ...
Barclay David R DR Marine Physical Laboratory, Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, California - - 2014
In September 2012, the free-falling, deep-diving instrument platform Deep Sound III descended to the bottom of the Tonga Trench, where it resided at a depth of 8515 m for almost 3 h, recording ambient noise data on four hydrophones arranged in a vertical L-shaped configuration. The time series from each of the ...
Hariprasad Daniel S DS Program in Applied Mathematics, University of Arizona, Tucson, Arizona 85721, - - 2014
The motion of a red blood cell suspended in a linear shear flow adjacent to a fixed boundary subject to an applied lateral force directed toward the boundary is simulated. A two-dimensional model is used that represents the viscous and elastic properties of normal red blood cells. Shear rates in ...
Rennies Jan J Cluster of Excellence Hearing4all, Project Group Hearing, Speech and Audio Technology, Fraunhofer Institute for Digital Media Technology IDMT, D-26129 Oldenburg, - - 2014
This study compared the combined effect of noise and reverberation on listening effort and speech intelligibility to predictions of the speech transmission index (STI). Listening effort was measured in normal-hearing subjects using a scaling procedure. Speech intelligibility scores were measured in the same subjects and conditions: (a) Speech-shaped noise as ...
Lee Wang Wei - - 2014
The range of motion (ROM) in stroke patients is often severely affected. Poststroke rehabilitation is guided through the use of clinical assessment scales for the rROM. Unfortunately, these scales are not widely utilized in clinical practice as they are excessively time-consuming. Although commercial motion-capture systems are capable of providing the ...
Cheng Z F ZF State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, - - 2014
An upgrade of the edge rotation diagnostic system is achieved by increasing the number of viewing channels to 17 on J-TEXT tokamak. With the upgrade, the spatial resolution reaches 1 cm. The bulk plasma is used as the calibration light source. And the toroidal velocity profile of C V (carbon ...
Nemati Shadman S Department of Otolaryngology- Head and Neck Surgery, School of Medicine, Guilan University of Medical Sciences, Guilan, Iran. - - 2014
While most tinnitus cases have some degree of hearing impairment, a small percent of the patients admitted to Ear, Nose and Throat Clinics or Hearing Evaluation Centers are those who complain of tinnitus despite having normal hearing thresholds. Present study was performed in order to better understanding of the probable ...
Kuhlicke Alexander A AG Nanooptik, Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, - - 2014
We developed a linear high-voltage amplifier for small capacitive loads consisting of a high-voltage power supply and a transistor amplifier. With this cost-effective circuit including only standard parts sinusoidal signals with a few volts can be amplified to 1.7 kVpp over a usable frequency range at large-signal response spanning four ...
Samlan Robin A RA Department of Head and Neck Surgery, UCLA School of Medicine, 31-24 Rehab Center, 1000 Veteran Avenue, Los Angeles, California - - 2014
The influence of epilaryngeal area on glottal flow and the acoustic signal has been described [Titze, J. Acoust. Soc. Am. 123, 2733-2749 (2008)], but it is not known how (or whether) changes in epilaryngeal area influence perceived voice quality. This study examined these relationships in a kinematic vocal tract model. ...
Bäckman Anders - - 2014
To determine bacterial eradication using numerous riboflavin concentrations and different ultraviolet light A (UVA) radiant and exposure time in an experimental model. Dilutions of Staphylococcus epidermidis were mixed with riboflavin at varying concentrations (0.007–0.09%). Effects on bacterial growth were evaluated after 0, 3, 6, 30 and 60 min of UVA ...
Stilp Christian E CE Department of Psychological and Brain Sciences, University of Louisville, Louisville, Kentucky 40292 christian.stilp@louisville.edu, - - 2014
When a spectral property is reliable across an acoustic context and subsequent vowel target, perception deemphasizes this cue and shifts toward less predictable, more informative cues. This phenomenon (auditory perceptual calibration) has been demonstrated for reliable spectral peaks +20 dB or larger, but psychoacoustic findings predict sensitivity to more modest spectral ...
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