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Martha M Shiell, Lars Hausfeld, Elia Formisano
Primary and posterior auditory cortex (AC) are known for sensitivity to spatial information, but how this information is processed is not yet understood. AC that is sensitive to spatial manipulations is also modulated by the number of auditory streams present in a scene (Smith et al. 2009), suggesting that spatial and non-spatial cues are integrated for stream segregation. We reasoned that if this is the case, then it is the distance between sounds rather than their absolute positions that is essential. To test this hypothesis, we measured human brain activity in response to spatially-separated concurrent sounds with functional magnetic resonance imaging at 7 Tesla in five men and five women...
April 30, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
K Shikha Ojha, Catherine M Burgess, Geraldine Duffy, Joseph P Kerry, Brijesh K Tiwari
The lethal effects of soundwaves on a range of microorganisms have been known for almost a century whereas, the use of ultrasound to promote or control their activity is much more recent. Moreover, the fundamental molecular mechanism influencing the behaviour of microorganisms subjected to ultrasonic waves is not well established. In this study, we investigated the influence of ultrasonic frequencies of 20, 45, 130 and 950 kHz on growth kinetics of Lactobacillus sakei. A significant increase in the growth rate of L...
2018: PloS One
Amol Saxena, Brian Fullem, Ludger Gerdesmeyer
Two case reports of high-level athletes with medial tibial stress syndrome (MTSS), 1 an Olympian with an actual stress fracture, are presented. Successful treatment included radial soundwave therapy, pneumatic leg braces, relative rest using an antigravity treadmill, and temporary foot orthoses. Radial soundwave therapy has a high level of evidence for treatment of MTSS. We also present recent evidence of the value of vitamin D assessment. Both patients had a successful outcome with minimal downtime. Finally, a suggested treatment regimen for MTSS is presented...
September 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
Ludger Gerdesmeyer, Amol Saxena, Tim Klueter, Norbert Harrasser, Brian Fullem, Andre Krath
A parallel prospective feasibility study was performed on 53 patients with chronic mid-portion Achilles tendinopathy (age 44.7 ± 9.1 years). Of the 53 patients, 28 (active group) were treated using a new electromagnetic (pulsed electromagnetic field) transduction therapy device (Cellactor(®) MT1) and heel cushions. The device produces an electromagnetic field of 80 milliTesla; a total of 8 treatments was performed within 4 weeks in an outpatient setting, without anesthesia, immobilization, or rest. A control group of 25 patients with a similar duration of symptoms was treated with heel cushions only...
September 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
Amol Saxena, Brian K Hong, Andrew S Yun, Nicola Maffulli, Ludger Gerdesmeyer
Extracorporeal shock wave therapy/radial soundwave therapy has been predominantly used for chronic or recalcitrant plantar fasciitis with strong scientific evidence of reliable outcomes. Most of the studies included patients with plantar fasciitis with symptoms >6 months in duration. Only 2 known studies have investigated acute plantar fasciitis, which is <6 weeks in duration. They both found suboptimal results for the use of extracorporeal shock wave therapy. To the best of our knowledge, no studies have investigated radial soundwave therapy for the subacute stage or early stage of plantar fasciitis...
September 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
Amol Saxena, Andrew Yun, Rajan Patel, Ludger Gerdesmeyer, Nicola Maffulli
The purpose of the present study was to evaluate the efficacy of radial soundwave therapy (RSW) for the management of sesamoiditis, symptomatic bipartite sesamoids, and avascular necrosis in athletic patients. The data from 10 patients undergoing RSW for sesamoiditis were retrospectively studied. Three treatments at 2.4 Bar and 13 Hz, for a total of 2500 pulses in each session, were administered to the affected sesamoid approximately 1 week apart. The Roles and Maudsley score and the visual analog scale (VAS) were used to assess disability and pain...
November 2016: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
Ayla Cecilia Fernández-Córdoba, Ileana Del Socorro Gutiérrez-Farfán, Laura Elizabeth Chamlati-Aguirre, Alfonso Alfaro-Rodríguez, Alfredo Durand-Rivera
INTRODUCTION: Programming the cochlear implant (CI) has always been a challenge for all medical specialists in audiology, especially in pediatric patients without language secondary profound hearing loss. For this reason are searched alternatives to achieve normal hearing with the implant during programming in the shortest time possible. OBJECTIVE: To analyze whether through modification threshold T we get faster audiological threshold, describe the differences in time found in patients with sensorineural hearing loss IC users with thresholds T at 10% modified, and T thresholds modified according to clinical responses after obtaining audiological threshold within normal parameters and report the speech coding strategies commonly used at the start of the program and to reach above the hearing threshold to language area...
May 2014: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
Wiktor Młynarski, Jürgen Jost
Binaural sound localization is usually considered a discrimination task, where interaural phase (IPD) and level (ILD) disparities at narrowly tuned frequency channels are utilized to identify a position of a sound source. In natural conditions however, binaural circuits are exposed to a stimulation by sound waves originating from multiple, often moving and overlapping sources. Therefore statistics of binaural cues depend on acoustic properties and the spatial configuration of the environment. Distribution of cues encountered naturally and their dependence on physical properties of an auditory scene have not been studied before...
2014: PloS One
Istemihan Akin, Romy Götze, Dietmar Basta, Britta Böhnke, Joachim Müller-Deile, Yves Ormezzano, Bruno Frachet, Jean-Marc Gérard, Naïma Deggouj, Birgit Philips, Ingeborg Dhooge, Laure Arnold
OBJECTIVE: To evaluate the smart algorithm in speed and reliability of threshold estimation compared with the algorithm available in the standard fitting software and to evaluate the possibility of using programs based on the smart algorithm instead of programs derived from behavioral measures. PATIENTS: Twenty subjects unilaterally implanted with a CII Bionic Ear or HiRes90K device. INTERVENTIONS: Neural response imaging thresholds (tNRI) were measured using both the smart approach within the Research Studies Platform for Objective Measures and the SoundWave fitting software...
July 2012: Otology & Neurotology
Thierry Van Den Abbeele, Nathalie Noël-Petroff, Istemihan Akin, Gül Caner, Levent Olgun, Jeanne Guiraud, Eric Truy, Josef Attias, Eyal Raveh, Erol Belgin, Gonca Sennaroglu, Dietmar Basta, Arneborg Ernst, Alessandro Martini, Monica Rosignoli, Haya Levi, Joseph Elidan, Abdelhamid Benghalem, Isabelle Amstutz-Montadert, Yannick Lerosey, Eddy De Vel, Ingeborg Dhooge, Minka Hildesheimer, Jona Kronenberg, Laure Arnold
OBJECTIVES: The aims of this study were to collect data on electrically evoked compound action potential (eCAP) and electrically evoked stapedius reflex thresholds (eSRT) in HiResolution(TM) cochlear implant (CI) users, and to explore the relationships between these objective measures and behavioural measures of comfort levels (M-levels). METHODS: A prospective study on newly implanted subjects was designed. The eCAP was measured intra-operatively and at first fitting through neural response imaging (NRI), using the SoundWave(TM) fitting software...
February 2012: Cochlear Implants International
Pablo R Olmos, Gisella R Borzone, Juan P Olmos, Alberto Diez, José L Santos, Valentina Serrano, Luis R Cataldo, José L Anabalón, Claudio H Correa
OBJECTIVE: Some patients with the syndrome of mitochondrial diabetes and deafness (MIDD) have a m.3243A>G mutation of the MTTL1 gene encoding transfer ribonucleic acid for the amino acid leucine (tRNALeu(UUR)). One of our MIDD patients inspired us to propose an integrated view on how a single mutation of the mitochondrial deoxyribonucleic acid (DNA) affects both the glucose metabolism and the inner ear physiology. DESIGN: (a) Study of mitochondrial DNA in a patient with MIDD...
April 2011: Journal of Otolaryngology—Head & Neck Surgery
Eun Kyung Jeon, Carolyn J Brown, Christine P Etler, Sara O'Brien, Li-Kuei Chiou, Paul J Abbas
BACKGROUND: In the mid-1990s, Cochlear Corporation introduced a cochlear implant (CI) to the market that was equipped with hardware that made it possible to record electrically evoked compound action potentials (ECAPs) from CI users of all ages. Over the course of the next decade, many studies were published that compared ECAP thresholds with levels used to program the speech processor of the Nucleus CI. In 2001 Advanced Bionics Corporation introduced the Clarion CII cochlear implant (the Clarion CII internal device is also known as the CII Bionic Ear)...
January 2010: Journal of the American Academy of Audiology
Gül Caner, Levent Olgun, Gürol Gültekin, Muzaffer Balaban
OBJECTIVE: To study over time correlations between Compound Action Potential measured through Neural Response Imaging (NRI) and electrically Evoked Stapedius Reflex Thresholds (eSRT) and psychophysical measurements to develop guidelines for using those objective measures to optimize HiRes programs in patients implanted with Advanced Bionics CII-Bionic Ear or a HiRes90K cochlear implants. PATIENTS: Fifteen pediatric subjects, all implanted with a CII-Bionic Ear or a HiRes90K...
August 2007: Otology & Neurotology
I Akin, G Kuran, C Saka, M Vural
During cochlear implantation, precise placement of the cochlear electrodes against the cochlear nerve is one of the most important steps, necessary to enable the patient to be aware of the stimulus from the implanted device. Neural response imaging (NRI) is a new tool which measures the evoked compound action potential generated as a result of electrical stimulation of the cochlea by properly placed electrodes during surgery. The aim of this study was to examine the correlation between intra-operative NRI recordings and 'most comfortable levels' (M levels) measured during standard fitting with the SoundWave fitting software, in cochlear implantation patients...
April 2006: Journal of Laryngology and Otology
De-Min Han, Xue-Qing Chen, Xiao-Tian Zhao, Ying Kong, Yong-Xin Li, Sha Liu, Bo Liu, Ling-Yan Mo
CONCLUSIONS: The data collected in this study indicated that first Neural Response Imaging (NRI) thresholds had a better correlation with HiResolution most comfortable loudness (M) levels than tNRI thresholds. Electrically evoked auditory reflex thresholds (EARTs) had a higher correlation with HiResolution M levels than tNRI thresholds and a lower correlation than first NRI thresholds. NRI is a very useful method for programming the cochlear implants of young children who cannot demonstrate a reliable judgment of loudness...
July 2005: Acta Oto-laryngologica
Wang Bochu, Shao Jiping, Li Biao, Lian Jie, Duan Chuanren
Hormones have been suggested to play a prominent role in the control of callus growth. In this paper, with the method of indirect enzyme-linked immunosorbent assays (ELISA), we investigated the induction effect of soundwave on the dynamic change of endogenous indole-3-acetic acid (IAA) and abscisic acid (ABA) in vitro during the differentiation process of Chrysanthemum synchronized mature Callus. These experiments showed that groups treated by optimal soundwave (1.4 kHz, 0.095 kdb) had significantly higher IAA levels and lower ABA than that of the control, which had been implicated activation of endogenous IAA and inhibition of ABA...
September 1, 2004: Colloids and Surfaces. B, Biointerfaces
D Jourdan, D Ardid, E Chapuy, D Le Bars, A Eschalier
Brief electrical pulses applied to the rat tail elicit a complex vocal response which includes audible (peeps, chatters) and ultrasonic (USV) components. Aspirin and amitriptyline had no effect on the vocal responses. Morphine showed a dose-dependent and naloxone reversible antinociceptive effect on the 1st and 2nd audible peeps by decreasing their intensity (evaluated by their envelopes which correspond to the outer bounds of the soundwave amplitude plotted as a function of time), with ED50 values of 1.96 mg/kg and 0...
1998: Life Sciences
J G Thewissen, S T Hussain
All described fossil and Recent cetaceans have relatively similar ear bones (malleus, incus and stapes) that strongly diverge from those of land mammals. Here we report that the hearing organ of the oldest whale, Pakicetus, is the only known intermediate between that of land mammals and aquatic cetaceans (whales, dolphins and porpoises). The incus of Pakicetus is intermediate with respect to inflation, crural proportions, and position of the mallear joint. The incus and mandible of Pakicetus indicate that the path of soundwaves to its ear resembled that of land mammals...
February 4, 1993: Nature
E J Hass, K C Hass
We argue that the simple wavelength interpretation of the auditory kappa effect proposed by Yoblick and Salvendy in 1970 is inadequate since only the frequency of an incoming soundwave is preserved at the tympanic membrane. Alternative explanations are proposed in terms of psychological variables. The kappa effect with tonal intervals is explained using an imputed velocity model in which frequency differences are equated to phenomenological "distances." The continuous tone effect is explained in terms of previously observed correlations between frequency and the volume or " bigness " of a tone and between size and perceived duration...
April 1984: Perceptual and Motor Skills
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