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Yeh Chao-Hui - - 2014
Flexible integrated circuits with complex functionalities are the missing link for the active development of wearable electronic devices. Here we report a scalable approach to fabricate self-aligned graphene microwave transistors for the implementation of flexible low-noise amplifiers and frequency mixers, two fundamental building blocks of a wireless communication receiver. A ...
Deeks Jeremy J Department of Civil & Environmental Engineering, University of Strathclyde, 75 Montrose Street, Glasgow, G1 1XJ, UK, - - 2014
Ultrasound-enhanced gene transfer (UEGT) is continuing to gain interest across many disciplines; however, very few studies investigate UEGT efficiency across a range of frequencies. Using a variable frequency generator, UEGT was tested in E. coli at six ultrasonic frequencies. Results indicate frequency can significantly influence UEGT efficiency positively and negatively. ...
Spencer Rebecca J RJ Department of Anesthesia, Critical Care, and Pain Medicine, Massachusetts General Hospital, Boston, MA, - - 2014
Currently, information about airway assessment and tracheal intubation is communicated verbally or in writing. Google Glass can record this information in real time with minimal disruption to work flow, using standard operating room lighting.
Nottage Judith F JF Institute of Psychiatry, King's College London, P089 DeCrespigny Park, Denmark Hill, London, SE5 8AF, UK, - - 2014
An acute challenge with delta-9-tetrahydrocannabinol (THC) can induce psychotic symptoms including delusions. High electroencephalography (EEG) frequencies, above 20 Hz, have previously been implicated in psychosis and schizophrenia. The objective of this study is to determine the effect of intravenous THC compared to placebo on high-frequency EEG. A double-blind cross-over study design ...
Greene Nathanial T NT Department of Physiology & Biophysics, University of Colorado School of Medicine, Aurora CO 80045; Department of Otolaryngology, University of Colorado School of Medicine, Aurora CO - - 2014
There are three main acoustical cues to sound location, each attributable to space-and frequency-dependent filtering of the propagating sound waves by the outer ears, head, and torso: Interaural differences in time (ITD) and level (ILD) as well as monaural spectral shape cues. While the guinea pig has been a common ...
Venail Frederic F * ENT Department and University Montpellier 1, University Hospital Gui de Chauliac , Montpellier , - - 2014
Objective: To demonstrate the feasibility and reliability of simultaneous binaural recording of auditory steady-state responses (ASSR) in young children using narrow-band CE-Chirps as stimuli. Design: Prospective cohort study comparing ASSR thresholds to four frequency stimuli (0.5, 1, 2, and 4 kHz), with click-evoked auditory brainstem responses (ABR) and behavioral response ...
Dimopoulos Ioannis S IS Ophthalmology, University of Alberta, 7-55 Medical Sciences Building, Edmonton, Alberta, T6G 2H7, - - 2014
PURPOSE. Recording oscillatory potentials (OPs) to document how age impacts on rod- and cone-driven inner retina function. METHODS. Dark- and light-adapted electroretinogram (ERG) luminance-response functions were recorded in healthy human subjects aged 20-39, 40-59, and 60-82 years. Raw ERG traces (0.1-300Hz) were filtered (75-300Hz) to measure OPs trough-to-peak in the ...
Kyhn Line A LA Aarhus University, Department of Bioscience, DK-4000 Roskilde, Denmark. Electronic address: - - 2014
Wideband sound recordings were made of underwater noise emitted by an active drillship, Stena Forth, working in 484m of water in Baffin Bay, western Greenland. The recordings were obtained at thirty and one-hundred meters depth. Noise was recorded during both drilling and maintenance work at ranges from 500m to 38km. ...
Tenney Jeffrey R JR Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Pediatric Neuroimaging Research Consortium, Cincinnati Children's Hospital Medical Center, Cincinnati, - - 2014
Objective: The aim of this study was to determine the frequency-dependent, spatiotemporal involvement of corticothalamic networks to the generation of absence seizures. Methods: Magnetoencephalography recordings were obtained in 12 subjects (44 seizures) with untreated childhood absence seizures. Time-frequency analysis of each seizure was performed to determine bandwidths with significant power ...
Thompson Andrew G AG 1Department of Human Movement Sciences, Old Dominion University, Norfolk, Virginia 2Department of Education, Glenville State College, Glenville, West - - 2014
This study evaluated changes in autonomic tone during a tactical pistol competition. At rest and during a match, heart rate variability (HRV) was examined in 28 healthy subjects. HRV time-domain variables (including inter-beat interval, IBI) and frequency-domain variables (low frequency, LF; high frequency, HF; total power, TP) measured during shooting ...
Hou Yanan Y Key Laboratory on Neurodegenerative Disorders of Ministry of Education, Department of Neurobiology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, China; Beijing Key Laboratory on Parkinson's Disease, Parkinson Disease Center of Beijing Institute for Brain Disorders, Beijing, - - 2014
The brainstem and basal ganglia are important in the pathophysiology of Parkinson's disease (PD). Reliable and sensitive detection of neural activity changes in these regions should be helpful in scientific and clinical research on PD. In this study, we used resting state functional MRI and amplitude of low frequency fluctuation ...
Wilson Nick N Department of Public Health, University of Otago, Wellington, 7343, Wellington South, New Zealand, - - 2014
There is evidence that good urban design, including street connectivity, facilitates walking for transport. We, therefore, piloted a short survey on 118 such walkways in nine suburbs in Wellington, New Zealand's capital. The instrument appeared feasible to use and performed well in terms of inter-rater reliability (median Kappa score for ...
Wang Jing J Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany; State Key Lab of Cognitive Neuroscience and Learning, Beijing Normal University, P. R. - - 2014
The pathophysiology of Parkinson's disease (PD) has been related to excessive beta band oscillations in the basal ganglia. Recent recordings from the subthalamic nucleus of PD patients showed that beta oscillations show strong cross-frequency coupling with high-frequency oscillations (>200 Hz). However, little is known about the characteristics and functional properties ...
Auerbach Paul S PS *Division of Emergency Medicine, Department of Surgery, Stanford University School of Medicine, Stanford, California; †Department of Orthopedic Surgery, Stanford University School of Medicine, Stanford, California; ‡Stanford-Kaiser Affiliated Residency in Emergency Medicine, Stanford University School of Medicine, Stanford, California; §Los Altos High School, Los Altos, California; and ¶Department of Neurology, School of Medicine, University of California, San Francisco, San Francisco, - - 2014
To determine whether skull motion produced by pulsatile cerebral blood flow, as measured by cranial accelerometry, is altered during concussion. In phase 1, to identify a specific pattern indicative of concussion, cranial accelerometry of subjects who sustained a concussion underwent analysis of waveforms, which was compared with accelerometry from subjects ...
Fortune Emma E Department of Orthopedic Surgery, Mayo Clinic, Rochester, - - 2014
Repeated durations of dynamic activity with high ground reaction forces (GRFs) and loading rates (LRs) can be beneficial to bone health. To fully characterize dynamic activity in relation to bone health, field-based measurements of gait kinetics are desirable to assess free-living lower-extremity loading. The study aims were to determine correlations ...
Huitema Bradley E BE Western Michigan University, United States of - - 2014
Pedestrians account for 40-50% of traffic fatalities in large cities. Several previous studies based on relatively small samples have concluded that Pedestrian Countdown Timers (PCT) may reduce pedestrian crashes at signalized intersections, but other studies report no reduction. The purposes of the present article are to (1) describe a new ...
Korzeniewska A A Department of Neurology, Johns Hopkins University School of Medicine, 600 N. Wolfe St., Meyer 2-147, Baltimore, MD 21287, USA. Electronic address: - - 2014
Seizures are increasingly understood to arise from epileptogenic networks across which ictal activity is propagated and sustained. In patients undergoing invasive monitoring for epilepsy surgery, high frequency oscillations have been observed within the seizure onset zone during both ictal and interictal intervals. We hypothesized that the patterns by which high ...
Castillo Eric R ER Harvard University - - 2014
This study investigates whether a flexible pole can be used as an energy-saving method for humans carrying loads. We model the carrier and pole system as a driven damped harmonic oscillator and predict that the energy expended by the carrier is affected by the compliance of the pole and the ...
Mehraei Golbarg G Program in Speech and Hearing Bioscience and Technology, Harvard University-Massachusetts Institute of Technology, Cambridge, Massachusetts - - 2014
Poor speech understanding in noise by hearing-impaired (HI) listeners is only partly explained by elevated audiometric thresholds. Suprathreshold-processing impairments such as reduced temporal or spectral resolution or temporal fine-structure (TFS) processing ability might also contribute. Although speech contains dynamic combinations of temporal and spectral modulation and TFS content, these capabilities ...
Wu Sung-Yueh SY Department of Mechanical Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan. - - 2014
This paper presents novel wireless EWOD/DEP chips that are wirelessly powered and controlled through LC circuits with one-to-many transmitter-receiver coupling. Each receiving LC circuit connected to the EWOD/DEP electrode is designed to have a different resonant frequency. When the input frequency is close to one of the resonant frequencies of ...
Ponomareva Natalya N Department for Brain Research, Research Center of Neurology, Russian Academy of Medical Sciences, Moscow, Russia. Electronic address: - - 2014
Brain dysfunction precedes clinical manifestation of Huntington's disease (HD) by decades. This study was aimed to determine whether resting EEG is altered in preclinical HD mutations carriers (pre-HD). We examined relative power of broad traditional EEG bands as well as 1-Hz sub-bands of theta and alpha from the resting-state EEG ...
Nakatani Shimpei S Thoraxcenter, Department of Cardiology, Erasmus - - 2014
Background:Quantitative light intensity analysis of the strut core by optical coherence tomography (OCT) may enable assessment of changes in the light reflectivity of the bioresorbable polymeric scaffold from polymer to provisional matrix and connective tissues, with full disappearance and integration of the scaffold into the vessel wall. The aim of ...
Pisanski Katarzyna - - 2014
Listeners associate low voice pitch (fundamental frequency and/or harmonics) and formants (vocal-tract resonances) with large body size. Although formants reliably predict size within sexes, pitch does not reliably predict size in groups of same-sex adults. Voice pitch has therefore long been hypothesized to confound within-sex size assessment. Here we performed ...
Beard George F GF Human Factors Research Unit, Institute of Sound and Vibration Research, University of Southampton, Highfield, Southampton SO17 1BJ, United - - 2014
The discomfort caused by lateral oscillation, roll oscillation, and fully roll-compensated lateral oscillation has been investigated at frequencies between 0.25 and 1.0 Hz when sitting on a rigid seat and when sitting on a compliant cushion, both without a backrest. Judgements of vibration discomfort and the transmission of lateral and roll ...
Cao Pan - - 2014
We propose and experimentally demonstrate a new scheme for photonic generation of microwave frequency shift keying (FSK) signal by employing one single-drive Mach-Zehnder modulator (MZM). In the proposed method, an electrical signal with different radio frequency (RF) amplitudes and direct current (DC) components for bit '0' and bit '1' is ...
Zhao Shouguo S Department of Urology, University of Pittsburgh, 700 Kaufmann Building, 15213, Pittsburgh, PA, - - 2014
The effect of a non-symmetric waveform on nerve conduction block induced by high-frequency biphasic stimulation is investigated using a lumped circuit model of the unmyelinated axon based on Hodgkin-Huxley equations. The simulation results reveal that the block threshold monotonically increases with the stimulation frequency for the symmetric stimulation waveform. However, ...
Mora Emanuel C EC Research Group in Bioacoustics and Neuroethology, Department of Animal and Human Biology, Faculty of Biology, Havana University, Havana, - - 2014
Frequency alternation in the echolocation of insectivorous bats has been interpreted in relation to ranging and duty cycle, i.e. advantages for echolocation. The shifts in frequency of the calls of these so-called two-tone bats, however, may also play its role in the success of their hunting behavior for a preferred ...
Kamiya Kazusaku K Institut Pasteur, Génétique et Physiologie de l'Audition, 75015 Paris, France;Institut National de la Santé et de la Recherche Médicale, Unité Mixte de Recherche, UMR-S 1120 Paris, France;Sorbonne Universités, UPMC Univ Paris 06, Complexité Du Vivant, 75252 Paris Cedex 05, France;Department of Otorhinolaryngology, Juntendo University Faculty of Medicine, Juntendo University, Tokyo 1138421, - - 2014
A detrimental perceptive consequence of damaged auditory sensory hair cells consists in a pronounced masking effect exerted by low-frequency sounds, thought to occur when auditory threshold elevation substantially exceeds 40 dB. Here, we identified the submembrane scaffold protein Nherf1 as a hair-bundle component of the differentiating outer hair cells (OHCs). ...
Sjökvist J J Swedish Winter Sports Research Centre, Mid Sweden University, Östersund, Sweden; 2 Swedish Olympic Committee, Stockholm, Sweden; 3 Department of Human Movement Science, Norwegian University of Science and Technology, Trondheim, Norway - - - 2014
To investigate performance and kinematics of crosscountry skiers during sprint running and bounding on different inclines, in relationship to maximal strength, power and skiing performance. On day one, the maximal strength of 14 elite skiers was tested using a mid-thigh isometricpull and maximal relative leg power determined using squat and ...
Huang Liangming L Department of Automatic Control, College of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha, Hunan, People's Republic of - - 2014
Research on spontaneous low-frequency oscillations is important to reveal underlying regulatory mechanisms in the brain. The mechanism for the stimulus modulation of low-frequency oscillations is not known. Here, we used the intrinsic optical imaging technique to examine stimulus-modulated low-frequency oscillation signals in the rat visual cortex. The stimulation was presented ...
Cousijn Helena H Department of Psychiatry andOxford Centre for Human Brain Activity, Warneford Hospital, University of Oxford, Oxford OX3 7JX, United Kingdom; - - 2014
Gamma band oscillations arise in neuronal networks of interconnected GABAergic interneurons and excitatory pyramidal cells. A previous study found a correlation between visual gamma peak frequency, as measured with magnetoencephalography, and resting GABA levels, as measured with magnetic resonance spectroscopy (MRS), in 12 healthy volunteers. If true, this would allow ...
Oliveira Aline Cabral de AC Federal University of Sergipe , - - 2014
Abstract Conclusion: Responses with greater amplitude were recorded when carrier frequencies were modulated at 37, 40, and 43 Hz. These responses can be recorded even in patients with significant sensorineural hearing loss, from the sternocleidomastoid (SCM) muscle for a 500 Hz tone, 100% modulated at 40 Hz. Objective: To determine ...
Feeny Albert A Whiting School of Engineering, Johns Hopkins University, Baltimore, MD, - - 2014
Reproducibility of spatial TT' angle on the 10-second ECG and its agreement with QT variability has not been previously studied. We analyzed 2 randomly selected 10-second segments within 3-minute resting orthogonal ECG in 172 healthy IDEAL study participants (age 38.1±15.2years, 50% male, 94% white). Repolarization lability was measured by the ...
Lecomte Christophe C Associate Member, Southampton Statistical Sciences Research Institute , University of Southampton , Southampton, - - 2014
A frequency averaging framework is proposed for the solution of complex linear dynamic systems. It is remarkable that, while the mid-frequency region is usually very challenging, a smooth transition from low- through mid- and high-frequency ranges is possible and all ranges can now be considered in a single framework. An ...
Pritchett E M EM Department of Animal and Food Sciences, University of Delaware, Newark, - - 2014
Stress in poultry can produce many undesirable effects on bird health and production performance. The objective of this study was to develop and evaluate a potential measure to assess stress through analysis of brain activity using electroencephalography (EEG). In two experiments, White Pekin ducks were implanted with EEG transmitters and ...
Ives D Timothy DT Ecole Normale Supérieure, Institut d'Etude de la Cognition, Paris Sciences et Lettres, 75005, Paris, France, - - 2014
Noise reduction (NR) systems are commonplace in modern digital hearing aids. Though not improving speech intelligibility, NR helps the hearing-aid user in terms of lowering noise annoyance, reducing cognitive load and improving ease of listening. Previous psychophysical work has shown that NR does in fact improve the ability of normal-hearing ...
Aoki Mitsuhiro M Medical Information Division, Gifu University Hospital, Japan; Department of Otolaryngology, Gifu University Graduate School of Medicine, Japan. Electronic address: - - 2014
The statistical properties of the center of pressure (COP) change over time, and -invariant methods of the COP analysis is not sufficient to monitor the changes. Therefore, dynamic temporal information of the COP signals has been important in assessing the postural stability. The purpose of this study was to evaluate ...
Zhang Youhua Y Departments of Cardiovascular Medicine and Molecular Cardiology, The Cleveland Clinic Foundation, Cleveland, OH, USA, - - 2014
Zhang's phenomenon (originally His electrogram alternans) is a new index of atrioventricular node dual pathway electrophysiology. This index has been described and validated in isolated hearts in vitro, but has not been recorded in vivo. This study explored the feasibility of in vivo recording of Zhang's phenomenon (His electrogram alternans) ...
Henriques Isadora Ferreira IF Department of Physical Therapy, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, MG, Brazil, - - 2014
This study aimed to determine the prevalence of motion sickness in schoolchildren and related the finding to the postural balance and quality of life. A population-based cross-sectional study was carried out with 831 children aged 7 to 12 years. The frequency of motion sickness was evaluated based on the Motion Sickness ...
Raupach Sebastian - - 2014
We propose and demonstrate the phase-stabilized transfer of a chirped frequency as a tool for synchronization and time transfer. Technically, this is done by evaluating remote measurements of the transferred, chirped frequency. The gates of the frequency counters, here driven by a 10-MHz oscillation derived from a hydrogen maser, play ...
Hall Joseph W JW 3rd Department of Otolaryngology-Head and Neck Surgery, University of North Carolina at Chapel Hill, 170 Manning Drive, Chapel Hill, North Carolina - - 2014
This study investigated development of the ability to integrate glimpses of speech in modulated noise. Noise was modulated synchronously across frequency or asynchronously such that when noise below 1300 Hz was "off," noise above 1300 Hz was "on," and vice versa. Asynchronous masking was used to examine the ability of listeners to ...
Sabra Karim G KG School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia 30332-0405 - - 2014
Monolithic integration of capacitive micromachined ultrasonic transducer arrays with low noise complementary metal oxide semiconductor electronics minimizes interconnect parasitics thus allowing the measurement of thermal-mechanical (TM) noise. This enables passive ultrasonics based on cross-correlations of diffuse TM noise to extract coherent ultrasonic waves propagating between receivers. However, synchronous recording of ...
Parker Kevin J KJ Department of Electrical & Computer Engineering, University of Rochester, Hopeman Engineering Building 203, P.O. Box 270126, Rochester, New York - - 2014
Hysteresis is a phenomenon that has been observed across many different materials and situations. Under small-amplitude cyclical motion, classical hysteresis designates a constant loss per cycle over a wide range of frequencies. This is also consistent with an increase in losses or attenuation with frequency that is strictly proportional to ...
Pizzocaro Marco - - 2014
We describe a reliable, high-power, and narrow-linewidth laser source at 399 nm, which is useful for cooling and trapping of ytterbium atoms. A continuous-wave titanium-sapphire laser at 798 nm is frequency doubled using a lithium triborate crystal in an enhancement cavity. Up to 1.0 W of light at 399 nm has been obtained from ...
Harris-Hayes Marcie M Program in Physical Therapy, Washington University School of Medicine, St Louis, - - 2014
Context: Abnormal movement patterns have been implicated in lower extremity injury. Reliable, valid, and easily implemented assessment methods are needed to examine existing musculoskeletal disorders and investigate predictive factors for lower extremity injury. Objective: To determine the reliability of experienced and novice testers in making visual assessments of lower extremity ...
Emami Hossein - - 2014
A microwave photonic in-phase and quadrature detector is conceived and practically demonstrated. The detector has the ability to become electronically reconfigured to operate at any frequency over a wide range. This makes it an excellent candidate for frequency agile radars and other electronic warfare systems based on frequency hopping. The ...
Tian Shulin S School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu, - - 2014
This study develops a frequency feature based pulsed eddy current method. A frequency feature, termed frequency to zero, is proposed for subsurface defects and metal loss quantification in metallic specimens. A curve fitting method is also employed to generate extra frequency components and improve the accuracy of the proposed method. ...
Kwon Kye-Si KS Department of Mechanical Engineering, Soonchunhyang University 22, Soonchunhyang-Ro, Shinchang, Asan Chungnam 336-745, South - - 2014
Inkjet technology has been used as manufacturing a tool for printed electronics. To increase the productivity, the jetting frequency needs to be increased. When using high-frequency jetting, the printed pattern quality could be non-uniform since the jetting performance characteristics including the jetting speed and droplet volume could vary significantly with ...
Han Liang L Harbin Institute of Technology, Mail Box 3047, Harbin, People's Republic of - - 2014
This paper provides a method to measure the amplitude of low frequency oscillation under the on-track working condition, and realizes the sampling by means of adding the circuit design of sampling, low pass filtering by 3 dB at 48.2 kHz, detection and integrating in the filtering unit. The experimental results prove that ...
Kim Jin-Seop JS Department of Physical Therapy, Sun Moon University, Republic of - - 2014
[Purpose] This study aimed to determine whether low-frequency current therapy can be used to reduce the symptoms of idiopathic slow transit constipation (ISTC). [Subjects] Fifteen patients (ten male and five female) with idiopathic slow transit constipation were enrolled in the present study. [Results] Bowel movements per day, bowel movements per ...
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