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Kuribayashi Ryuma R aCognitive Psychophysiology Laboratory, Graduate School of Integrated Arts and Sciences, Hiroshima University, Higashi-Hiroshima bDigiFusion Japan Co. Ltd, Hiroshima, - - 2014
High-quality digital sound sources with inaudible high-frequency components (above 20 kHz) have become available because of recent advances in information technology. Listening to such sounds has been shown to increase the α-band power of an electroencephalogram (EEG). The present study scrutinized the time course of this effect by recording EEG ...
Hollien Harry H Institute for the Advanced Study of the Communicative Processes, University of Florida, Gainesville, Florida. Electronic address: - - 2014
This article provides a review of data drawn from a series of related experiments to demonstrate how frequency change (Δf0) is accomplished in the modal register. The research cited involves studies of (1) laryngeal size, (2) vocal fold length, (3) vocal fold thickness, and (4) subglottic pressure; new data describe ...
Dähne Sven S Machine Learning Group, Department of Computer Science, Berlin Institute of Technology, Marchstr. 23, 10 587 Berlin, Germany; Bernstein Center for Computational Neuroscience, Berlin, Germany. Electronic address: - - 2014
Phase synchronization among neuronal oscillations within the same frequency band has been hypothesized to be a major mechanism for communication between different brain areas. On the other hand, cross-frequency communications are more flexible allowing interactions between oscillations with different frequencies. Among such cross-frequency interactions amplitude-to-amplitude interactions are of a special ...
Gohel Suril R SR New Jersey Institute of Technology, Biomedical Engineering, Newark, New Jersey, United States ; - - 2014
Studies of resting state fMRI have shown that BOLD signals giving rise to temporal correlation across voxels (or regions) are dominated by low frequency fluctuations in the range of approx. 0.01 - 0.1 Hz. These low-frequency fluctuations have been further divided into multiple distinct frequency bands (slow-5 and -4) based ...
Alexander Joshua M JM 1Department of Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, Indiana, USA; and 2Boys Town National Research Hospital, Omaha, Nebraska, - - 2014
The authors have demonstrated that the limited bandwidth associated with conventional hearing aid amplification prevents useful high-frequency speech information from being transmitted. The purpose of this study was to examine the efficacy of two popular frequency-lowering algorithms and one novel algorithm (spectral envelope decimation) in adults with mild to moderate ...
Hopkins Kathryn K * School of Psychological Sciences, University of Manchester , Manchester , - - 2014
Abstract Objectives: To determine whether non-linear frequency compression (NLFC) is effective for hearing-impaired adults in a clinical setting. To determine whether benefit from NLFC is related to duration of NLFC experience or severity of high-frequency hearing loss. Design: Participants were fitted with Phonak frequency compression hearing aids as part of ...
Tzuang Lawrence D - - 2014
We demonstrate the modulation of silicon ring resonators at RF carrier frequencies higher than the resonance linewidth by coupling adjacent free-spectral-range (FSR) resonance modes. In this modulator scheme, the modulation frequency is matched to the FSR frequency. As an example, we demonstrate a 20 GHz modulation in a silicon ring with ...
Wang Yuanquan - - 2014
In this Letter, polarization division multiplexing is proposed and experimentally demonstrated for the first time that we know of, in visible light communication systems based on incoherent light emitting diodes and two orthogonal groups of linear polarizers. Spectrally efficient 16-ary quadrature amplitude modulation Nyquist single carrier frequency domain equalization is ...
Kommanapalli Deepika - - 2014
Cone isolating stimuli were used to assess the temporal frequency response characteristics of L- and M-cone electroretinograms (ERGs) in nine trichromatic and four dichromatic human observers. The stimuli comprised sinusoidal temporal modulations varying from 5 to 100 Hz. ERGs were recorded using corneal fiber electrodes and subjected to fast Fourier transform ...
Piper Diana - - 2014
Abstract An innovative concept for synchronization analysis between heart rate (HR) components and rhythms in EEG envelopes is represented; it applies time-variant analyses to heart rate variability (HRV) and EEG, and it was tested in children with temporal lobe epilepsy (TLE). After a removal of ocular and movement-related artifacts, EEG ...
Martínez-Solís Fermín - - 2014
Gait analysis and research have been developed to obtain characteristics of movement patterns of people while walking. However, traditional measuring systems present different drawbacks that reduce their use and application. Among those drawbacks one can find: high price, low sampling frequency and limiting number of steps to be analyzed. Traditional ...
Wu Jianhua J Department of Kinesiology and Health, Georgia State University, Atlanta, GA, USA. Electronic address: - - 2014
Children with Down syndrome (DS) display less stable and coordinated gait patterns in the time domain than their healthy peers. However, little is known about whether this group difference exists in the frequency domain. The purpose of this study was to investigate differences in vertical ground reaction force (GRF) in ...
Kleine Punte Andrea A University Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, and Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, - - 2014
Aims: To investigate the long-term effects of the fine structure processing (FSP) coding strategy on speech perception in noise and quality of life in experienced cochlear implant (CI) users. Methods: In a prospective comparative clinical trial, 32 experienced postlingually deafened CI recipients were upgraded from the Tempo+ to the Opus ...
Xu Rui - - 2014
We present a non-iterative multi-resolution motion estimation strategy, involving block-based comparisons in each detail band of a Laplacian pyramid. A novel matching score is developed and analysed. The proposed matching score is based on a class of non-linear transformations of Laplacian detail bands, yielding 1-bit or 2-bit representations. The matching ...
Wang Zhengge Z Department of Medical Imaging, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, PR China; Department of Medical Imaging, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, PR China; Jinling Hospital-Fudan University Computational Translational Medicine Center, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, PR - - 2014
Amplitude of low-frequency fluctuation (ALFF) of blood-oxygenation level-dependent (BOLD) has proven a promising way to detect disease-related local brain activity. However, routine approach employs an arbitrary frequency band of 0.01-0.08Hz, which lacks frequency specificity and blinds to the information contained in other frequency bands. This study investigated the amplitude of ...
Piazza Elise A EA University of California, - - 2014
Previous research has shown that the right hemisphere processes low spatial frequencies more efficiently than the left hemisphere, which preferentially processes high spatial frequencies. These studies have typically measured RTs to single, briefly flashed gratings and/or have directed observers to attend to a particular spatial frequency immediately before making a ...
Rao Akshay - - 2014
A novel signal-processing strategy is proposed to enhance speech for listeners with hearing loss. The strategy focuses on improving vowel perception based on a recent hypothesis for vowel coding in the auditory system. Traditionally, studies of neural vowel encoding have focused on the representation of formants (peaks in vowel spectra) ...
Keshtkaran Mohammad Reza MR Department of Electrical and Computer Engineering , National University of Singapore, 117583 - - 2014
Objective. Power line interference may severely corrupt neural recordings at 50/60 Hz and harmonic frequencies. The interference is usually non-stationary and can vary in frequency, amplitude and phase. To retrieve the gamma-band oscillations at the contaminated frequencies, it is desired to remove the interference without compromising the actual neural signals at ...
Temprana Eduardo - - 2014
A low phase noise frequency comb generated from a continuous-wave seed is experimentally demonstrated across continuous C- and L-bands. Parametrically generated carriers with optical signal-to-noise ratio in excess of 45dB were used to generate 16-ary quadrature amplitude modulated signals. We characterize 20 GBaud channels' performance that was varied by only ...
Conelea Christine A CA Brown University and Rhode Island Hospital, Providence, RI, - - 2014
Stress is the contextual variable most commonly implicated in tic exacerbations. However, research examining associations between tics, stressors, and the biological stress response has yielded mixed results. This study examined whether tics occur at a greater frequency during discrete periods of heightened physiological arousal. Children with co-occurring tic and anxiety ...
Wurster Claudia Diana CD Department of Neurology, Ulm University, Oberer Eselsberg 45, 89081, Ulm, Germany, - - 2014
Functional imaging demonstrated hemodynamic activation within specific brain areas that contribute to frequency-dependent movement control. Previous investigations demonstrated a linear relationship between movement and hemodynamic response rates within cortical regions, whereas the basal ganglia displayed an inverse neural activation pattern. We now investigated neural correlates of frequency-related finger movements in ...
Matsangas P P a Department of Operations Research , Naval Postgraduate School , Monterey , CA , - - 2014
This study assesses lateral tipping motion-induced interruptions (MIIs) in a simulated motion environment. The objective is to revisit MII occurrence and sway motion relationship by focusing on the frequency and acceleration of the lateral motion stimulus. Results verify that MIIs increase with increasing peak sway acceleration, but the effect of ...
Li Jianping - - 2014
A novel polarization-modulator-based complementary frequency shifter (PCFS) has been proposed and then used to implement the generation of a frequency-locked multicarrier with single- and dual-recirculating frequency shifting loops, respectively. The transfer functions and output properties of PCFS and PCFS-based multicarrier generator have been studied theoretically. Based on our simulation results ...
Preussler Stefan - - 2014
The generation of flat, rectangular frequency combs with tunable frequency spacing and bandwidth is demonstrated. Therefore, several lines or sidebands are extracted out of an existing frequency comb, for example a femtosecond fiber laser. Subsequently, these lines are processed via two Mach-Zehnder modulators in order to generate a flat frequency ...
Xu Minpeng M Department of Biomedical Engineering, Tianjin University, Tianjin, People's Republic of China. Tianjin Key Laboratory of Biomedical Detecting Techniques and Instruments, Tianjin, People's Republic of - - 2014
Objective. Spelling is one of the most important issues in brain-computer interface (BCI) research. This paper is to develop a visual parallel-BCI speller system based on the time-frequency coding strategy in which the sub-speller switching among four simultaneously presented sub-spellers and the character selection are identified in a parallel mode. ...
Bhidayasiri Roongroj R Chulalongkorn Center of Excellence on Parkinson Disease & Related Disorders, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, - - 2014
Background: Tremors are common clinical complaints among the elderly and non-specialist physicians frequently are challenged by the need to provide an accurate diagnosis of various tremor syndromes, particularly Parkinson's disease and essential tremor in their busy practices. Objective: We sought to develop an easy-to-use, mobile robust, accurate, and cost-effective instrument ...
Wang Yong Y Department of Pharmacology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR - - 2014
Background/Aims: Cardiac action potential duration (APD) is regulated by heart rate, leading to the trans-membrane movement of inorganic ions. Whether the alteration of heart rate can affect the expression of transient receptor potential canonical channels (TRPCs), further studies should be made. We investigated the changes of APD at different stimulus ...
Malone Brian James BJ - - 2014
Changes in amplitude and frequency jointly determine the communicative significance of complex acoustic signals, including human speech. We have previously described responses of neurons in the core auditory cortex of awake rhesus macaques to sinusoidal amplitude modulation (SAM) signals. Here we report a complementary study of sinusoidal frequency modulation (SFM) ...
Reyes B A BA Electrical Engineering Department, Universidad Autonoma Metropolitana, Mexico City 09340, - - 2014
A step forward in the knowledge about the underlying physiological phenomena of thoracic sounds requires a reliable estimate of their time-frequency behavior that overcomes the disadvantages of the conventional spectrogram. A more detailed time-frequency representation could lead to a better feature extraction for diseases classification and stratification purposes, among others. ...
Carvalho M G MG Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Rua dos Bragas 289, 4050-123, Porto, Portugal; Faculdade de Ciências da Universidade do Porto (FCUP), Rua Campo Alegre 1021/1055, 4169-007, Porto, - - 2014
To assess the periodicity of micro-increment formation in otoliths of Lipophrys pholis, 90 early juveniles were immersed in alizarin red S or tetracycline hydrochloride for 24 h and sacrificed after 10, 20 and 30 days. The number of micro-increments viewed under light microscopy was significantly related to the duration of the experimental ...
Mandal S S Schlumberger-Doll Research, Cambridge, MA 02139, USA. Electronic address: - - 2014
MR probes commonly employ resonant circuits for efficient RF transmission and low-noise reception. These circuits are narrow-band analog devices that are inflexible for broadband and multi-frequency operation at low Larmor frequencies. We have addressed this issue by developing an ultra-broadband MR probe that operates in the 0.1-3MHz frequency range without ...
Reinfeldt Sabine S * Department of Signals and Systems, Chalmers University of Technology , Gothenburg , - - 2014
Objective: Bone conduction (BC) stimulation closer to the cochlea has previously been shown to give higher cochlear promontory acceleration measured by laser Doppler vibrometry (LDV). This study is investigating whether stimulation closer to the cochlea also gives improved hearing sensitivity. Furthermore, the study compares shifts in hearing sensitivity (BC thresholds) ...
He Xinjian X a Center for Health-Related Aerosol Studies, Department of Environmental Health , University of Cincinnati , Cincinnati , - - 2014
Breathing frequency (breaths/min) differs among individuals and levels of physical activity. Particles enter respirators through two principle penetration pathways: faceseal leakage and filter penetration. However, it is unknown how breathing frequency affects the overall performance of N95 filtering facepiece respirators (FFRs) and surgical masks (SMs) against viral particles, as well ...
Flamme Gregory A GA * Department of Speech Pathology and Audiology, Western Michigan University , Kalamazoo , - - 2014
Abstract Objective: To estimate the short-term variability and correlates of variability in pure-tone thresholds obtained using audiometric equipment designed for occupational use, and to examine the justification for excluding 8 kHz as a mandatory threshold in occupational hearing conservation programs. Method: Pure-tone thresholds and other hearing-related tests (e.g. noise dosimetry, ...
Lisman John J Biology Department, Volen Center for Complex Systems, Brandeis University , Waltham, MA , - - 2014
There is now strong evidence that gamma frequency oscillations occur during the engagement of cortical regions. These oscillations involve gamma frequency feedback inhibition. Thus, understanding the properties of this form of inhibition is critical to understanding how excitation and inhibition interact to determine which cells fire and, more generally, how ...
Etchemendy Pablo E PE Laboratorio de Acústica y Percepción Sonora, Universidad Nacional de Quilmes, R. S. Pena 352 Bernal, B1876BXD Buenos Aires, - - 2014
In this work, the overall perceived pitch (principal pitch) of pure tones modulated in frequency with an asymmetric waveform is studied. The dependence of the principal pitch on the degree of asymmetric modulation was obtained from a psychophysical experiment. The modulation waveform consisted of a flat portion of constant frequency ...
Bolin Karl K Marcus Wallenberg Laboratory for Sound and Vibration Research, Kungliga Tekniska Högskolan, Teknikringen 8, SE-100 44 Stockholm, - - 2014
This article focuses on computations of low frequency sound propagation from an off-shore wind farm. Two different methods for sound propagation calculations are combined with meteorological data for every 3 hours in the year 2010 to examine the varying noise levels at a reception point at 13 km distance. It is ...
Hots J J Department of Experimental Audiology, Otto von Guericke University Magdeburg, Leipziger Straβe 44, 39120 Magdeburg, - - 2014
Level differences at equal loudness between band-pass noise and pure tones with a frequency equal to the center frequency of the noise were measured in normal-hearing listeners using a loudness matching procedure. The center frequencies were 750, 1500, and 3000 Hz and noise bandwidths from 5 to 1620 Hz were used. The ...
Amsalem Hagai - - 2014
To obtain quantitative data on uterine contractility postpartum and compare the response of intramuscular oxytocin to carbetocin. A prospective study using an intrauterine pressure transducer (IUPT) to measure frequency, amplitude, and duration of contractions following the administration of either oxytocin (10 U) or carbetocin (30 microg). The IUPT was tolerated ...
Nagahara R R Faculty of Health and Sport Sciences, University of Tsukuba, - - 2014
This study clarified the association between acceleration and the rates of changes in spatiotemporal variables on a step-to-step basis during the entire acceleration phase of maximal sprinting. 21 male sprinters performed a 60-m sprint, during which step-to-step acceleration and rates of changes in step length (RSL) and step frequency (RSF) ...
Xu Zheng-Min ZM Department of Otolaryngology-Head and Neck Surgery, Children's Hospital of Fudan University, 399 Wan Yuan Road, Shanghai 201102, PR China. Electronic address: - - 2014
To investigate the clinical usefulness of the LS-chirp auditory brainstem response for estimation of behavioral thresholds in young children with mild to severe hearing losses. 68 infants (136 ears) aged 6-12 months (mean age=9.2 months) with bilateral mild to severe hearing losses were studied at Children's Hospital of Fudan University. ...
Nicolaou N N Holistic Electronics Research Lab, Department of Electrical and Computer Engineering, University of Cyprus, Cyprus; KIOS Research Centre, University of Cyprus, Kallipoleos 75, 1678 Nicosia, Cyprus. Electronic address: - - 2014
A number of studies provide supporting evidence for changes in synchronization during anesthetic-induced unconsciousness. This study investigates how anesthetic administration affects the widespread patterns of phase synchrony. The recently introduced method of Spatial Analytic Phase Difference (SAPD) was used to measure changes in synchrony in the electroencephalogram (EEG) activity of ...
Ho Chun-Hung - - 2014
With broader available bandwidth, W-band wireless transmission has attracted a lot of interests for future Giga-bit communication. In this article, we experimentally demonstrate W-band radio-over-fiber (RoF) system employing single-sideband single-carrier (SSB-SC) modulation with lower peak-to-average-power ratio (PAPR) than orthogonal frequency division multiplex (OFDM). To overcome the inter-symbol interference (ISI) of ...
Lu Sheng-Hua - - 2014
In this paper a high-sensitivity low-coherence heterodyne interferometric system consisting of two polarizing Michelson interferometers arranged in tandem is presented. A compact frequency-domain optical delay line was placed in the first interferometer to produce a 4.4 kHz frequency shift for broadband near-infrared light. The frequency shift was wavelength independent because the ...
Li Kuo - - 2014
A fiber Bragg grating (FBG) accelerometer using transverse forces is more sensitive than one using axial forces with the same mass of the inertial object, because a barely stretched FBG fixed at its two ends is much more sensitive to transverse forces than axial ones. The spring-mass theory, with the ...
Ghasia Fatema F FF Cole Eye Institute, Cleveland Clinic, Cleveland, OH. Electronic address: - - 2014
Most common eye movements, oblique saccades, feature rapid velocity, precise amplitude, but curved trajectory that is variable from trial-to-trial. In addition to curvature and inter-trial variability, the oblique saccade trajectory also features high-frequency oscillations. A number of studies proposed the physiological basis of the curvature and inter-trial variability of the ...
Tice Daniel B - - 2014
Light-matter interaction at the nano-scale is of particular interest for future photonic integrated circuits and devices with applications ranging from communication to sensing and imaging. In this letter a combination of transient absorption (TA) and the use of third harmonic generation as a probe (THG-probe) has been adopted to investigate ...
Lewis Kylie C KC 1Richmond, - - 2014
Objectives: To ascertain if there has been a change in the frequency of appearance of maxillary midline diastema in two leading women's fashion magazines over a decade. Methods: Two observers counted the frequency of maxillary midline diastema that appeared in Caucasian female models featured in British Vogue and Glamour (UK). ...
Harris-Hayes Marcie M Program in Physical Therapy - - 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 ...
Serafin Stanley S School of Human, Health and Social Sciences, Central Queensland University, Rockhampton, QLD, 4702, Australia; School of Humanities and Languages, University of New South Wales, Sydney, NSW, 2052, Australia; Department of Chiropractic, Macquarie University, Sydney, NSW, 2109, - - 2014
This study investigates evidence of changes and continuities in ancient Maya violence and warfare in inland northwest Yucatan, Mexico from the Middle Preclassic (600-300 BC) to the Postclassic (AD 1050-1542) through bioarchaeological analysis of cranial and projectile trauma. It is hypothesized that the frequency of violence increases before the Classic ...
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