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Shih-Chiao Tseng, Richard K Shields
We investigated the effects of vertical vibration and compressive load on soleus H-reflex amplitude and postactivation depression. We hypothesized that, in the presence of a compressive load, limb vibration induces a longer suppression of soleus H-reflex. Eleven healthy adults received vibratory stimulation at a fixed frequency (30 Hz) over two loading conditions (0% and 50% of individual's body weight). H-reflex amplitude was depressed ∼88% in both conditions during vibration. Cyclic application of compression after cessation of the vibration caused a persistent reduction in H-reflex excitability and postactivation depression for > 2...
November 15, 2017: Journal of Motor Behavior
Mariam Salah Shadi, Mona A Hegazi, Jilan F Nassar, Samia Bassiouny, Sally Sarwat, Marwa M Saleh
BACKGROUND: Phonasthenia is a voice disorder where the larynx looks essentially normal and dysphonia is not heard but felt by the patient. This study aims to use videokymography (VKG) to detect any abnormalities in the vibratory pattern in phonasthenia and to find out whether or not these abnormalities change after vocal loading. METHODS: Thirty-seven phonasthenic patients and 31 normal subjects participated in a detailed protocol, including analysis of subjective complaints and videokymographic quasi-objective parameters (baseline) followed by loading their voices through prolonged loud reading for 45 min...
November 14, 2017: Folia Phoniatrica et Logopaedica
Erik S Schneider, Heinrich Römer, Tony Robillard, Arne K D Schmidt
The receiver sensory system plays a crucial role in the evolution of new communication signals in insects. Among acoustic communicating crickets, the tribe Lebinthini (Eneopterinae) has evolved a unique communication system in that males produce exceptionally high-frequency calls and females respond with vibratory signals to guide males towards them. In this study, we describe nine species of Eneopterinae in which the sound receiving structures have undergone considerable morphological changes. We revealed that the anterior tympanal membrane (ATM) of the ear was extremely thin, as little as 0...
November 10, 2017: Scientific Reports
Yash S Khandwala, Fernando Serrano, Michael L Eisenberg
BACKGROUND AND AIMS: Chronic scrotal pain is a common yet poorly understood urologic disease. Current treatment paradigms are sub-optimal and include anti-inflammatory drugs and opioids as well as invasive surgical management such as microdenervation of the spermatic cord. In this study, the efficacy of external vibratory stimulation (EVS) was evaluated as an alternative treatment option for idiopathic scrotal pain. MATERIALS AND METHODS: Ten consecutive patients presenting to an academic urology clinic between December 2016 and April 2017 with scrotal pain were prospectively enrolled...
November 7, 2017: Scandinavian Journal of Pain
Ana Alves-Pinto, Stefan Ehrlich, Gordon Cheng, Varvara Turova, Tobias Blumenstein, Renée Lampe
Playing a musical instrument demands the integration of sensory and perceptual information with motor processes in order to produce a harmonic musical piece. The diversity of brain mechanisms involved and the joyful character of playing an instrument make musical instrument training a potential vehicle for neurorehabilitation of motor skills in patients with cerebral palsy (CP). This clinical condition is characterized by motor impairments that can affect, among others, manual function, and limit severely the execution of basic daily activities...
2017: Neuropsychiatric Disease and Treatment
Justine Magnard, Christophe Cornu, Gilles Berrut, Thibault Deschamps
Inhibition is known to influence balance, step initiation and gait control. A specific subcomponent of inhibition, the perceptual inhibition process, has been suggested to be specifically involved in the integration of proprioceptive information that is necessary for efficient postural responses. This study aimed to investigate the inhibition requirements of planning and executing a choice step initiation task in young adults following experimental perturbation of proprioceptive information using Achilles tendon vibrations...
November 6, 2017: Human Movement Science
Patrick A Julien, Ivani Malvestiti, Tomislav Friščić
We provide the first in situ and real-time study of the effect of milling frequency on the course of a mechanochemical organic reaction conducted using a vibratory shaker (mixer) ball mill. The use of in situ Raman spectroscopy for real-time monitoring of the mechanochemical synthesis of a 2,3-diphenylquinoxaline derivative revealed a pronounced dependence of chemical reactivity on small variations in milling frequency. In particular, in situ measurements revealed the establishment of two different regimes of reaction kinetics at different frequencies, providing tentative insight into processes of mechanical activation in organic mechanochemical synthesis...
2017: Beilstein Journal of Organic Chemistry
Michael J Pitman, Takashi Kurita, Maria E Powell, Emily E Kimball, Masanobu Mizuta, Siyuan Chang, C Gaelyn Garrett, Bernard Rousseau
OBJECTIVES/HYPOTHESIS: Vocal fold scar is a major cause of dysphonia, and optimal treatments do not currently exist. Small intestinal submucosa (SIS) is a biomaterial developed for the treatment of a variety of pathologies. The purpose of this study was to investigate the effects of SIS implantation on tissue remodeling in scarred vocal folds using routine staining, immunohistochemistry, and high-speed videoendoscopy (HSV). STUDY DESIGN: Prospective, blinded group analysis...
November 6, 2017: Laryngoscope
Chaojun Zheng, Yu Zhu, Feizhou Lu, Dongqing Zhu, Shuo Yang, Xiaosheng Ma, Xinlei Xia, Robert Weber, Jianyuan Jiang
OBJECTIVE: To investigate changes in soleus H-reflex tests in patients with Hirayama disease (HD) and to analyse correlations between these changes and forward-shifting of the cervical cord during neck flexion. METHODS: The amplitude of the soleus H-reflex with and without vibration on the Achilles tendon was recorded bilaterally in 81 HD patients and 34 controls to measure both the vibratory inhibition index (VII) and the Hmax/Mmax ratio. The maximum forward-shifting degree of cervical cord during neck flexion was measured using dynamic magnetic resonance imaging in all HD patients...
October 3, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
Shigeru Hirano, Atsuhiko Kawamoto, Ichiro Tateya, Masanobu Mizuta, Yo Kishimoto, Nao Hiwatashi, Yoshitaka Kawai, Takuya Tsuji, Ryo Suzuki, Mami Kaneko, Yasushi Naito, Tatsuo Kagimura, Tatsuo Nakamura, Shin-Ichi Kanemaru
BACKGROUND: Vocal fold scar and sulcus are intractable diseases with no effective established treatments. Hepatocyte growth factor (HGF) has preclinically proven to have potent anti-fibrotic and regenerative effects on vocal fold scar. The current phase I/II clinical trial aims to examine the safety and effectiveness of intracordal injection of a recombinant human HGF drug for patients with vocal fold scar or sulcus. STUDY DESIGN: Phase I/II, open-label, dose-escalating, first-in-human clinical trial...
October 30, 2017: Journal of Tissue Engineering and Regenerative Medicine
Xiaoxing Liu, Zulqarain Baloch, Ge Wang, Senren Xue, Qunshang Huang, Shihua Yang
BACKGROUND: The rat is one of the most important experimental animals, which plays an indispensable role in biomedical research, particularly in reproduction. However, according to our best knowledge, there is no easy and efficient method available for semen collection from rats. RESULTS: In this study, we successfully collected semen through penile vibratory stimulation ejaculation (PVSE) from laboratory rats. This is an easier and more efficient method compared with rectal probe electro-ejaculation (RPE)...
October 17, 2017: Theriogenology
Olivier Walusinski
Jean-Martin Charcot's reputation remains that of a physician who took little interest in treatments for the neurological diseases he did much to identify. After reviewing the limited number of medicinal remedies of slight effectiveness at Charcot's disposal, we analyze in this review the numerous therapeutic tests that he conducted: vibratory medicine for Parkinson's disease, treatment of tabes by suspension technique, metallotherapy and moral -treatment for hysteria. Understanding that he fully and completely adhered to the far-reaching heredity-based theories of his day makes it possible to perceive his natural and fundamental pessimism...
October 26, 2017: European Neurology
Vinayak R Swarnkar, Udantha R Abeyratne, Roneel V Sharan
Snoring is one of the earliest symptoms of Obstructive Sleep Apnea (OSA). However, the unavailability of an objective snore definition is a major obstacle in developing automated snore analysis system for OSA screening. The objectives of this paper is to develop a method to identify and extract snore sounds from a continuous sound recording following an objective definition of snore that is independent of snore loudness. Nocturnal sounds from 34 subjects were recorded using a non-contact microphone and computerized data-acquisition system...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Atsushi Doi, Kazuaki Miyamoto, Yu-Shin Nakano, Juntaro Sakasaki, Syota Kasae, Keisuke Nishimura, Min-Chul Shin, Megumu Yoshimura
We investigated the effects of a vibratory stimulus on the plantar surface of the hind limb for motor, sensory, and locomotive function using a mouse cast model. The right knee joint of C57BL/6 male mice (7 weeks, 20 g, n = 31) was flexed with aluminum splint and tape for 6 weeks. These mice were randomly divided into 2 groups (control group, n = 11 and vibration group, n = 12). The mice in the vibration group received vibration on the sole of the ankle for 15 minutes per day, 5 days per week. After the knee joint cast was removed, we measured the range of motion (ROM) of both knee and ankle joints and the sensory threshold of the sole...
2017: PloS One
Ryota Imai, Michihiro Osumi, Tomoya Ishigaki, Takayuki Kodama, Sotaro Shimada, Shu Morioka
Activation of motor-related regions with illusory kinesthesia had been suspected to contribute toward pain alleviation. We used electroencephalography (EEG) to assess the sensorimotor cortex activation during illusory kinesthesia by vibratory tendon stimulation in patients who were in pain. We investigated the relationship between the sensorimotor cortex and postoperative pain to clarify the analgesia mechanism. Patients who had undergone distal radius fracture surgery were studied. A hand massager provided the vibration stimulus for the illusory kinesthesia on the extensor digitorum muscle at the nonaffected hand's wrist joint on 7 consecutive days starting 1 day after surgery...
December 6, 2017: Neuroreport
Xukai Ding, Jia Jia, Yang Gao, Hongsheng Li
This paper presents a theoretical analysis of mechanical and electrical noise in the sense channel of micro-electromechanical systems (MEMS) vibratory gyroscopes. Closed-form expressions for the power spectral density (PSD) of the noise equivalent rate (NER) of gyroscopes in the open-loop and the force-rebalance operations are derived by using an averaged PSD model and an equivalent transfer function. The obtained expressions are verified through numerical simulations, demonstrating close agreements between the analytic and the numerical models...
October 11, 2017: Sensors
Chelsea Ekstrand, Josh Neudorf, Eric Lorentz, Layla Gould, Marla Mickleborough, Ron Borowsky
Prevalent theories of semantic processing assert that the sensorimotor system plays a functional role in the semantic processing of manipulable objects. While motor execution has been shown to impact object processing, involvement of the somatosensory system has remained relatively unexplored. Therefore, we developed two novel priming paradigms. In Experiment 1, participants received a vibratory hand prime (on half the trials) prior to viewing a picture of either an object interacted primarily with the hand (e...
October 7, 2017: Acta Psychologica
Edin Begic, Zijo Begic
INTRODUCTION: Accidental murmurs occur in anatomically and physiologically normal heart. Accidental (innocent) murmurs have their own clearly defined clinical characteristics (asymptomatic, they require minimal follow-up care). AIM: To point out the significance of auscultation of the heart in the differentiation of heart murmurs and show clinical characteristics of accidental heart murmurs. MATERIAL AND METHODS: Article presents review of literature which deals with the issue of accidental heart murmurs in the pediatric cardiology...
August 2017: Medical Archives
Joel M Andersen, James Mack
Mechanochemistry continues to reveal new possibilities in chemistry including the opportunity for "greening" reactions. Nevertheless, a clear understanding of the energetic transformations within mechanochemical systems remains elusive. We employed a uniquely modified ball mill and strategically chosen Diels-Alder reactions to evaluate the role of several ball-milling variables. This revealed three different energetic regions that we believe are defining characteristics of most, if not all, mechanochemical reactors...
August 1, 2017: Chemical Science
Haim Sohmer
Soft tissue conduction (STC) is a recently explored mode of auditory stimulation, complementing air (AC) and bone (BC) conduction stimulation. STC can be defined as the hearing induced when vibratory stimuli reach skin and soft tissue sites not directly overlying skull bone such as the head, neck, thorax, and body. Examples of STC include the delivery of vibrations to the skin of parts of the body by a clinical bone vibrator, hearing underwater sounds and free field air sounds, while AC hearing is attenuated by earplugs...
January 2017: Trends in Hearing
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