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Osborne Neville N NN Fundación de Investigación Oftalmológica, Avda. Doctores Fernández-Vega 34, E-33012, Oviedo, Asturias, Spain. Electronic address: - - 2014
The retina is the only part of the central nervous system that is exposed to light radiation between 400-780 nm. Short wavelength light (SWL) ranging between 400-480nm are absorbed maximally by chromophores located in mitochondria. An abundance of mitochondria are located in retinal ganglion cell (RGC) intraocular axons and photoreceptor ...
Passarella Salvatore S Dipartimento di Medicina e Scienze per la Salute, Università del Molise, Via De Sanctis, I-86100 Campobasso, Italy. Electronic address: - - 2014
In addition to the major functions performed by in the cell, mitochondria play a major role in cell-light interaction. Accordingly it is generally accepted that mitochondria are crucial in cell photobiomodulation; however a variety of biomolecules themselves proved to be targets of light irradiation. We describe whether and how mitochondria ...
Li Chuanming C Department of Radiology, Southwest Hospital, Third Military Medical University, Chongqing 400038, - - 2014
Resting-state functional magnetic resonance imaging (RS-fMRI) allowed researchers to detect intrinsic brain activity during rest and has been considered an analytical tool for evaluation of dementia. Previously, subcortical ischemic vascular disease (SIVD) has been found decreased amplitude low-frequency fluctuations (ALFF) in a widely frequency range (0.01-0.08Hz) in the bilateral precuneus ...
Takahashi Eri E Faculty of Life and Medical Sciences, Doshisha University, Kyotanabe, 610-0321, - - 2014
The echolocation behavior of Pipistrellus abramus during exposure to artificial jamming sounds during flight was investigated. Echolocation pulses emitted by the bats were recorded using a telemetry microphone mounted on the bats' backs, and their adaptation based on acoustic characteristics of emitted pulses was assessed in terms of jamming-avoidance responses ...
Kiyota Takeo - - 2014
We investigated lateral dominance in the postural stability of single-leg stance with anteroposterior floor oscillations at various frequencies. Thirty adults maintained a single-leg stance on a force platform for 20 seconds per trial. Trials were performed with no oscillation (static condition) and with anteroposterior floor oscillations (2.5-cm amplitude) at six ...
Léger Agnès C AC Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts avenue, Cambridge, MA 02139-4307, USA. Electronic address: - - 2014
The ability to identify syllables in the presence of speech-shaped noise and a single-talker background was measured for 18 normal-hearing (NH) listeners, and for eight hearing-impaired (HI) listeners with near-normal audiometric thresholds for frequencies up to 1.5 kHz and a moderate to severe hearing loss above 2 kHz. The stimulus ...
Xu Qin - - 2014
The present study investigated whether the frequency-following response (FFR) of the auditory brainstem can represent individual frequency-discrimination ability. We measured behavioral frequency-difference limens (FDLs) in normal hearing young adults. Then FFRs were evoked by two pure tones, whose frequency difference was no larger than behavioral FDL. Discrimination of FFRs to ...
Sanders Lia Lira Olivier LL Berlin School of Mind and Brain, Humboldt-Universität zu Berlin, Luisenstraße 56, Haus 1, 10117 Berlin, - - 2014
A good example of inferential processes in perception is long-range apparent motion (AM), the illusory percept of visual motion that occurs when two spatially distinct stationary visual objects are presented in alternating sequence. The AM illusion is strongest at presentation frequencies around 3Hz. At lower presentation frequencies, the percept varies ...
Coe Charles C *OD, PhD †PhD ‡PhD, FAAO Indiana University School of Optometry, Bloomington, Indiana (all - - 2014
To determine if measurement of monochromatic wavefront aberrations in near-infrared light can accurately and precisely predict subjective refractive error for polychromatic light. Our approach requires knowledge of the monochromatic wavelength-in-focus (WiF) when polychromatic light is well focused, for which new empirical measurements are reported. With accommodation paralyzed, subjective refractive error ...
Geberzahn Nicole - - 2014
BackgroundVocal performance refers to the ability to produce vocal signals close to physical limits. Such motor skills can be used by conspecifics to assess a signaller¿s competitive potential. For example it is difficult for birds to produce repeated syllables both rapidly and with a broad frequency bandwidth. Deviation from an ...
Hill Evan M EM Department of Psychology, University of Nebraska at Kearney, Kearney, NE, 68849, - - 2014
The pure-tone thresholds of four domestic female chickens were determined from 2 Hz to 9 kHz using the method of conditioned suppression/avoidance. At a level of 60 dB sound pressure level (re 20 μN/m(2)), their hearing range extends from 9.1 Hz to 7.2 kHz, with a best sensitivity of 2.6 dB at 2 kHz. Chickens have better sensitivity ...
Shen Yi - - 2014
Gap detection and the temporal modulation transfer function (TMTF) are two common methods to obtain behavioral estimates of auditory temporal acuity. However, the agreement between the two measures is not clear. This study compares results from these two methods and their dependencies on listener age and hearing status. Gap detection ...
Aronoff Justin M JM 1Department of Speech and Hearing Science, University of Illinois at Urbana-Champaign, Champaign, Illinois, USA; 2Human Communication Science and Devices, House Research Institute, Los Angeles, California, USA; and 3Hearing Instruments Business Unit, Panasonic Healthcare Co., Ltd, Yokohama, - - 2014
Hearing-impaired individuals often have difficulty in noisy environments. Interleaved filters, where signals from neighboring frequency regions are sent to opposite ears, may benefit those individuals but may also reduce the benefits of spatial cues. This study investigated the effect of interleaved filters on the use of spatial cues. Normal-hearing subjects' ...
Zlotolow Dan A DA Department of Orthopaedic Surgery, Shriners Hospitals for Children, Philadelphia, PA; Department of Orthopaedic Surgery and Sports Medicine, Temple University School of Medicine, Philadelphia, PA; University of Maryland Medical Center, Baltimore, MD. Electronic address: - - 2014
To evaluate which objective criteria correlated with subjective impressions of outcome following index finger pollicization for thumb hypoplasia. Forty-two pollicizations in 35 patients were assessed by a comprehensive subjective and objective measurement analysis. In the subjective measures, the surgeon, therapist, and caregiver rated how the pollicized digit "looks like a ...
Durin Virginie V VAST Audio Pty Ltd., 4 Cornwallis Street, Eveleigh, New South Wales 2015, - - 2014
This study compared the head-related transfer functions (HRTFs) recorded from the bare ear of a mannequin for 393 spatial locations and for five different hearing aid styles: Invisible-in-the-canal (IIC), completely-in-the-canal (CIC), in-the-canal (ITC), in-the-ear (ITE), and behind-the-ear (BTE). The spectral distortions of each style compared to the bare ear were ...
Schumacher Karn L KL School of Mechanical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia karn.schumacher@adelaide.edu.au, con.doolan@adelaide.edu.au, - - 2014
The response of the boundary layer over an airfoil with cavity to external acoustic forcing, across a sweep of frequencies, was measured. The boundary layer downstream of the cavity trailing edge was found to respond strongly and selectively at the natural airfoil tonal frequencies. This is considered to be due ...
Eichenauer Anja A Institute of Hearing Technology and Audiology, University of Applied Sciences, Oldenburg, Germany - - 2014
This study compares bone conduction (BC) thresholds obtained with two bone vibrators (BV): The Radioear B71 and an advanced BV, the Radioear B81. B81 has less distortion and is capable of higher output levels. Two tests with 20 normal hearing subjects were conducted to determine if the low distortion of ...
Radke John C - - 2014
Objective: To compare 10 Hz wide segments of the 0 to 1000 Hz frequency distributions of vibrations recorded from five stages of internally deranged and asymptomatic temporomandibular joints (TMJs). Methods: TMJ vibrations were recorded from 236 patients with five stages of TMJ dysfunction: (1) reducing partial disc displacement (PDDR, nā€Š=ā€Š39); ...
Zhang Ming M Faculty of Rehabilitation Medicine, Department of Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, Canada; Glenrose Rehabilitation Hospital, Department of Audiology, Alberta Health Services, Edmonton, Alberta, Canada; and Faculty of Medicine and Dentistry, Department of Surgery-Otolaryngology, University of Alberta, Edmonton, Alberta, - - 2014
Compared to a conventional click-evoked cochlear microphonic (CM) in an electrocochleogram, a tone-burst evoked CM waveform (CMW) is unconventional and the frequency band is narrower. Furthermore, compared to conventional CM measurement techniques such as the use of a tympanic or a canal electrode, the use of a concha electrode is ...
Wang Shiwei - - 2014
This paper presents the design and experimental results of a cochlea filter in analog very large scale integration (VLSI) which highly resembles physiologically measured response of the mammalian cochlea. The filter consists of three specialized sub-filter stages which respectively provide passive response in low frequencies, actively tunable response in mid-band ...
Schlenther D D Institute for Cell Biology and Neuroscience, Goethe University, Frankfurt, 60438, Germany, - - 2014
Ketamine is a dissociative anaesthetic, analgesic drug as well as an N-methyl-D-aspartate receptor antagonist and has been reported to influence otoacoustic emission amplitudes. In the present study, we assess the effect of ketamine-xylazine on high-frequency distortion-product otoacoustic emissions (DPOAE) in the bat species Carollia perspicillata, which serves as model for ...
Smith Ashley C AC 5716 Chapman Avenue, Memphis, TN, - - 2014
Since the mid-1990s, osteometrics have been a major aspect in forensic anthropology. However, recent evidence has shown that practitioners have been using differing points to establish certain measurements; namely those involving the clavicle, scapula, ulna, femur, and tibia. Engaging 61 practitioners, this study examined and confirmed how extensive this discord ...
Evers J J School of Medicine and Medical Science, University College Dublin, Dublin, - - 2014
Although sacral neuromodulation (SNM) is an established treatment for faecal incontinence, stimulation parameters have been derived empirically and only one frequency (14 Hz) is employed clinically. The aim of this study was to test a range of stimulation frequencies to establish an optimal frequency of SNM for maximum augmentation of anal ...
Hajipour Sardouie Sepideh - - 2014
Removing muscle activity from ictal ElectroEncephaloGram (EEG) data is an essential preprocessing step in diagnosis and study of epileptic disorders. Indeed, at the very beginning of seizures, ictal EEG has a low amplitude and its morphology in the time domain is quite similar to muscular activity. Contrary to the time ...
Bell Wade E WE Department of Biology, Virginia Military Institute, Lexington, Virginia, 24450, - - 2014
When Paramecium encounter positive stimuli, the membrane hyperpolarizes and ciliary beat frequency increases. We adapted an established immobilization protocol using a biological adhesive and a novel digital analysis system to quantify beat frequency in immobilized Paramecium. Cells showed low mortality and demonstrated beat frequencies consistent with previous studies. Chemoattractant molecules, ...
Foster Sarah - - 2014
BackgroundFew studies have investigated associations between objectively measured crime and walking, and findings are mixed. One explanation for null or counterintuitive findings emerges from criminology studies, which indicate that the permeable street layouts and non-residential land uses that underpin walkable neighbourhoods are also associated with more crime. This study examined ...
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 ...
Langers Dave R M DR National Institute for Health Research (NIHR) Nottingham Hearing Biomedical Research Unit, University of Nottingham, Nottingham, UK; Otology and Hearing Group, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Nottingham, UK. Electronic address: - - 2014
Numerous studies on the tonotopic organisation of auditory cortex in humans have employed a wide range of neuroimaging protocols to assess cortical frequency tuning. In the present functional magnetic resonance imaging (fMRI) study, we made a systematic comparison between acquisition protocols with variable levels of interference from acoustic scanner noise. ...
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 ...
Kraus Martin F MF Pattern Recognition Lab, University Erlangen-Nürnberg, D-91058 Erlangen, Germany ; School of Advanced Optical Technologies (SAOT), University Erlangen-Nürnberg, D-91058 Erlangen, Germany ; Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, - - 2014
Variability in illumination, signal quality, tilt and the amount of motion pose challenges for post-processing based 3D-OCT motion correction algorithms. We present an advanced 3D-OCT motion correction algorithm using image registration and orthogonal raster scan patterns aimed at addressing these challenges. An intensity similarity measure using the pseudo Huber norm ...
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 ...
Zhang Hongbo H Industrial Ergonomics and Biomechanics Lab, Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, - - 2014
Joint coordination plays a critical role in maintaining postural stability, yet there is limited existing work describing joint coordination patterns in the time-frequency domain. Here, two-joint coordination was examined during quiet upright stance. A wavelet coherence method was applied to quantify the coherence between ankle-trunk and ankle-head angles in the ...
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 ...
Guzman Marco M School of Communication Sciences, University of Chile, Santiago, Chile; Department of Otolaryngology, Voice Center, Las Condes Clinic, Santiago, Chile. Electronic address: - - 2014
Investigation sought to determine whether there is any acoustic variable to objectively differentiate gender in children with normal voices. A total of 30 children, 15 boys and 15 girls, with perceptually normal voices were examined. They were between 7 and 10 years old (mean: 8.1, SD: 0.7 years). Subjects were ...
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 ...
O'Toole A A Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, 405 Hilgard Ave, Los Angeles, California 90095, - - 2014
A compact tilt accelerometer with high sensitivity at low frequency was designed to provide low frequency corrections for the feedback signal of the Advanced Laser Interferometer Gravitational Wave Observatory active seismic attenuation system. It has been developed using a Tungsten Carbide ceramic knife-edge hinge designed to avoid the mechanical 1/f ...
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