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https://www.readbyqxmd.com/read/29335751/transcranial-direct-current-stimulation-enhances-foot-sole-somatosensation-when-standing-in-older-adults
#1
Junhong Zhou, On-Yee Lo, Lewis A Lipsitz, Jue Zhang, Jing Fang, Brad Manor
Foot-sole somatosensation is critical for safe mobility in older adults. Somatosensation arises when afferent input activates a neural network that includes the primary somatosensory cortex. Transcranial direct current stimulation (tDCS), as a strategy to increase somatosensory cortical excitability, may, therefore, enhance foot-sole somatosensation. We hypothesized that a single session of tDCS would improve foot-sole somatosensation, and thus mobility, in older adults. Twenty healthy older adults completed this randomized, double-blinded, cross-over study consisting of two visits separated by one week...
January 15, 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29299903/delayed-ejaculation-pathophysiology-diagnosis-and-treatment
#2
REVIEW
Ibrahim A Abdel-Hamid, Omar I Ali
Delayed ejaculation (DE) is a poorly defined and uncommon form of male sexual dysfunction, characterized by a marked delay in ejaculation or an inability to achieve ejaculation. It is often quite concerning to patients and their partners, and sometimes frustrates couples' attempts to conceive. This article aims to review the pathophysiology of DE and anejaculation (AE), to explore our current understanding of the diagnosis, and to present the treatment options for this condition. Electronic databases were searched from 1966 to October 2017, including PubMed (MEDLINE) and Embase...
January 2018: World Journal of Men's Health
https://www.readbyqxmd.com/read/29277350/clinical-practicability-of-a-newly-developed-real-time-digital-kymographic-system
#3
Jin-Choon Lee, Soo-Geun Wang, Eui-Suk Sung, In-Ho Bae, Seong-Tae Kim, Yeon-Woo Lee
BACKGROUND: A digital kymogram shows real images of vocal fold vibration. However, DKG is difficult to use in clinical practice because the recorded image cannot be seen instantaneously after examination, as considerable encoding time is required to visualize a digital kymogram. In addition, frame-by frame analysis should be implemented to evaluate high-speed videoendoscopy data, but is time- and labor-intensive. PURPOSE: The purpose of the study was to validate the clinical practicability of a real-time multislice digital kymographic system developed by the authors...
December 22, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29259346/orgasm-and-sci-what-do-we-know
#4
REVIEW
Marcalee Alexander, Lesley Marson
STUDY DESIGN: narrative review OBJECTIVES: To determine the percentage of persons with SCI able to achieve orgasm and ejaculation, the associations between ejaculation and orgasm and the subjective and autonomic findings during these events, and the potential benefits with regards to spasticity. SETTING: Two American medical centers METHODS: Data bases were searched for the terms orgasm and SCI and ejaculation and SCI. Search criteria were human studies published in English from 1990 to 12/2/2016...
December 20, 2017: Spinal Cord
https://www.readbyqxmd.com/read/29247049/directional-vibration-sensing-in-the-leafcutter-ant-atta-sexdens
#5
Felix A Hager, Lea Kirchner, Wolfgang H Kirchner
Leafcutter ants communicate with the substrate-borne component of the vibratory emission produced by stridulation. Stridulatory signals in the genus Atta have been described in different behavioural contexts, such as foraging, alarm signalling and collective nest building. Stridulatory vibrations are employed to recruit nestmates, which can localize the source of vibration, but there is little information about the underlying mechanisms. Our experiments reveal that time-of-arrival delays of the vibrational signals are used for tropotactic orientation in Atta sexdens The detected time delays are in the same range as the time delays detected by termites...
December 15, 2017: Biology Open
https://www.readbyqxmd.com/read/29246608/patterns-and-modulations-of-pendular-nystagmus-in-a-family-with-hereditary-spastic-paraplegia
#6
Eun Hye Oh, Jae-Hyeok Lee, Jin-Hong Shin, Hyang-Sook Kim, Ji-Soo Kim, Hyo-Jung Kim, Seo-Young Choi, Kwang-Dong Choi, David S Zee, Jae-Hwan Choi
Hereditary spastic paraplegia (HSP) is characterized by progressive spasticity and weakness of the lower extremities. Additional findings include ataxia, extrapyramidal signs, and dementia. Pendular nystagmus (PN) has been reported in some subtypes of HSP caused by PLP1 (SPG2) or paraplegin (SPG7) mutation. To describe the patterns and modulation of PN in HSP, we performed eye movement recording using video-oculography in a Korean family with HSP and PN. The PN was convergent-divergent in the oblique plane with a frequency of 6 to 7Hz and maximum amplitude at about 1...
December 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29246397/reliability-of-high-speed-videoendoscopic-ratings-of-essential-voice-tremor-and-adductor-spasmodic-dysphonia
#7
Lindsey A Parker, Melda Kunduk, Daniel S Fink, Andrew McWhorter
OBJECTIVES: The main objectives of this study were to (1) examine intrarater and inter-rater reliabilities in perceptual ratings of vocal fold vibratory patterns and supraglottic characteristics for essential vocal tremor and adductor spasmodic dysphonia (AdSD) using high-speed videoendoscopy (HSV), and (2) to investigate the specificity of the parameters in differentiating these two voice disorders. METHODS: HSV recordings of 34 cases diagnosed with essential vocal tremor, AdSD, or AdSD with vocal tremor were evaluated blindly by two voice speech pathologists...
December 12, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/29206981/variable-molecular-markers-for-the-order-mantophasmatodea-insecta
#8
Serena E Dool, Sven Künzel, Martin Haase, Mike D Picker, Monika J B Eberhard
The recently discovered insect order Mantophasmatodea currently comprises 19 Southern African species. These mainly occur in allopatry, have high levels of colour polymorphism and communicate via species- and gender-specific vibratory signals. High levels of interspecific morphological conservatism mean that cryptic species are likely to be uncovered. These aspects of Mantophasmatodean biology make them an ideal group in which to investigate population divergence due to habitat-specific adaptation, sexual selection and potentially sensory speciation...
December 1, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/29204383/hand-arm-vibration-effects-on-performance-tactile-acuity-and-temperature-of-hand
#9
Farhad Forouharmajd, Mehrdad Yadegari, Masoumeh Ahmadvand, Farshad Forouharmajd, Siamak Pourabdian
Effects of vibration appear as mechanical and psychological disorders, including stress reactions, cognitive and movement disorders, problem in concentration and paying attention to the assigned duties. The common signs and symptoms of hand-arm vibration (HAV) in the fingers and hands may appear as pins and needles feeling, tingling, numbness, and also the loss of finger sensation and dexterity. Laboratory Virtual Instrument Engineering Workbench programming software designed for occupational vibrations measurement was used to calculate HAV acceleration...
October 2017: Journal of Medical Signals and Sensors
https://www.readbyqxmd.com/read/29195495/the-effectiveness-of-vibrational-stimulus-to-accelerate-orthodontic-tooth-movement-a-systematic-review
#10
Dian Jing, Jiani Xiao, Xiaobing Li, Yu Li, Zhihe Zhao
BACKGROUND: In recent years, it has been a hot research topic to accelerate orthodontic tooth movement (OTM) through vibration. This review was therefore aimed to systematically evaluate the available evidences on the efficacy of vibrational stimulus to accelerate OTM. METHODS: Randomized controlled trials and controlled clinical trials that evaluated the efficacy of vibration on OTM acceleration were searched through electronic and manual search. Two review authors independently conducted the study inclusion, quality assessment and data extraction...
December 1, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29195444/detection-of-keyboard-vibrations-and-effects-on-perceived-piano-quality
#11
Federico Fontana, Stefano Papetti, Hanna Järveläinen, Federico Avanzini
Two experiments were conducted on an upright and a grand piano, both either producing string vibrations or conversely being silent after the initial keypress, while pianists were listening to the feedback from a synthesizer through insulating headphones. In a quality experiment, participants unaware of the silent mode were asked to play freely and then rate the instrument according to a set of attributes and general preference. Participants preferred the vibrating over the silent setup, and preference ratings were associated to auditory attributes of richness and naturalness in the low and middle ranges...
November 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29184289/proprioceptive-change-impairs-balance-control-in-older-patients-with-low-back-pain
#12
Tadashi Ito, Yoshihito Sakai, Kazunori Yamazaki, Kazuma Igarashi, Noritaka Sato, Kiyoko Yokoyama, Yoshifumi Morita
[Purpose] This study aims to determine the specific proprioceptive control strategy used during postural balance in older patients with low back pain (LBP) and non-LBP (NLBP) and to assess whether this strategy is related to proprioceptive decline and LBP. [Subjects and Methods] Pressure displacement center was determined in 47 older persons with LBP and 64 older persons with NLBP during upright stance on a balance board without vision. Gastrocnemius (GS) and lumbar multifidus muscle (LM) vibratory stimulations of 60 and 240-Hz, respectively, were applied to evaluate the relative contributions of different proprioceptive signals (relative proprioceptive weighting ratio, RPW) used in postural control...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29182648/the-neural-response-properties-and-cortical-organization-of-a-rapidly-adapting-muscle-sensory-group-response-that-overlaps-with-the-frequencies-that-elicit-the-kinesthetic-illusion
#13
Paul D Marasco, Dennis J Bourbeau, Courtney E Shell, Rafael Granja-Vazquez, Jason G Ina
Kinesthesia is the sense of limb movement. It is fundamental to efficient motor control, yet its neurophysiological components remain poorly understood. The contributions of primary muscle spindles and cutaneous afferents to the kinesthetic sense have been well studied; however, potential contributions from muscle sensory group responses that are different than the muscle spindles have not been ruled out. Electrophysiological recordings in peripheral nerves and brains of male Sprague Dawley rats with a degloved forelimb preparation provide evidence of a rapidly adapting muscle sensory group response that overlaps with vibratory inputs known to generate illusionary perceptions of limb movement in humans (kinesthetic illusion)...
2017: PloS One
https://www.readbyqxmd.com/read/29174059/vibratory-movements-in-contests-between-females-of-the-feather-legged-spider-uloborus-plumipes
#14
Anna-Christin Joel, Anne Habedank, Jörg Mey
Females of the feather-legged spider Uloborus plumipes invade, and compete for, each other's orb webs. In the context of these competitive interactions the question arose how the spiders communicate. Since substrate-borne vibrations are the most important component of the sensory environment of web-building spiders, we investigated vibratory movements that might serve as signals of communication. Three behaviors were found to be associated with female-female contests and to cause propagating vibrations in the spider webs: thread pulling, abdominal trembling, and web shaking...
September 1, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29172013/the-association-between-brain-activity-and-motor-imagery-during-motor-illusion-induction-by-vibratory-stimulation
#15
Takayuki Kodama, Hideki Nakano, Osamu Katayama, Shin Murata
BACKGROUND: The association between motor imagery ability and brain neural activity that leads to the manifestation of a motor illusion remains unclear. OBJECTIVE: In this study, we examined the association between the ability to generate motor imagery and brain neural activity leading to the induction of a motor illusion by vibratory stimulation. METHODS: The sample consisted of 20 healthy individuals who did not have movement or sensory disorders...
2017: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29156560/system-modeling-of-a-mems-vibratory-gyroscope-and-integration-to-circuit-simulation
#16
Hyukjin J Kwon, Seyeong Seok, Geunbae Lim
Recently, consumer applications have dramatically created the demand for low-cost and compact gyroscopes. Therefore, on the basis of microelectromechanical systems (MEMS) technology, many gyroscopes have been developed and successfully commercialized. A MEMS gyroscope consists of a MEMS device and an electrical circuit for self-oscillation and angular-rate detection. Since the MEMS device and circuit are interactively related, the entire system should be analyzed together to design or test the gyroscope. In this study, a MEMS vibratory gyroscope is analyzed based on the system dynamic modeling; thus, it can be mathematically expressed and integrated into a circuit simulator...
November 18, 2017: Sensors
https://www.readbyqxmd.com/read/29140761/limb-segment-load-inhibits-the-recovery-of-soleus-h-reflex-after-segmental-vibration-in-humans
#17
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
https://www.readbyqxmd.com/read/29136615/videokymographic-visualization-of-phonasthenia-a-nonorganic-voice-disorder
#18
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
https://www.readbyqxmd.com/read/29127426/hearing-with-exceptionally-thin-tympana-ear-morphology-and-tympanal-membrane-vibrations-in-eneopterine-crickets
#19
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
https://www.readbyqxmd.com/read/29126848/evaluation-of-external-vibratory-stimulation-as-a-treatment-for-chronic-scrotal-pain-in-adult-men-a-single-center-open-label-pilot-study
#20
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
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