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Sensory stimulation

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https://www.readbyqxmd.com/read/28544432/are-10-khz-stimulation-and-burst-stimulation-fundamentally-the-same
#1
REVIEW
Dirk De Ridder, Sanjaya Perera, Sven Vanneste
BACKGROUND: Spinal cord stimulation (SCS) is routinely used for intractable pain syndromes. For SCS to be efficacious the painful area needs to be covered by SCS induced paresthesia symptoms. Recently, novel stimulation designs have been developed for spinal cord stimulation (SCS) that are superior to classical spinal cord stimulation and exert their effects without the mandatory paresthesia. Two such stimulation designs are burst stimulation and 10 kHz stimulation. OBJECTIVE: Whereas the mechanism of action of burst SCS has been partly elucidated, in that it modulates the medial pain pathway in contrast to tonic stimulation, the mechanism of action of 10 kHz SCS is still enigmatic...
May 25, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28542314/toward-a-more-personalized-motor-function-rehabilitation-in-myotonic-dystrophy-type-1-the-role-of-neuroplasticity
#2
Simona Portaro, Antonino Naro, Antonino Chillura, Luana Billeri, Alessia Bramanti, Placido Bramanti, Carmelo Rodolico, Rocco Salvatore Calabrò
Myotonic dystrophy type 1 (DM1) is the most prevalent adult muscular dystrophy, often accompanied by impairments in attention, memory, visuospatial and executive functions. Given that DM1 is a multi-system disorder, it requires a multi-disciplinary approach, including effective rehabilitation programs, focusing on the central nervous system neuroplasticity, in order to develop patient-tailored rehabilitative procedures for motor function recovery. Herein, we performed a transcranial magnetic stimulation (TMS) study aimed at investigating central motor conduction time, sensory-motor plasticity, and cortical excitability in 7 genetically defined DM1 patients...
2017: PloS One
https://www.readbyqxmd.com/read/28541930/progress-in-artificial-vision-through-suprachoroidal-retinal-implants
#3
Lilach Bareket, Alejandro Barriga-Rivera, Marc Patrick Zapf, Nigel H Lovell, Gregg J Suaning
Retinal implants have proven their ability to restore visual sensation to people with degenerative retinopathy, characterized by photoreceptor cell death and the retina's inability to sense light. Retinal bionics operate by electrically stimulating the surviving neurons in the retina, thus triggering the transfer of visual sensory information to the brain. Suprachoroidal implants were first investigated in Australia in the 1950s. In this approach, the neuromodulation hardware is positioned between the sclera and the choroid, thus providing significant surgical and safety benefits for patients, with the potential to maintain residual vision combined with the artificial input from the device...
May 25, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28541915/embedded-system-for-prosthetic-control-using-implanted-neuromuscular-interfaces-accessed-via-an-osseointegrated-implant
#4
Enzo Mastinu, Pascal Doguet, Yohan Botquin, Bo Hakansson, Max Ortiz-Catalan
Despite the technological progress in robotics achieved in the last decades, prosthetic limbs still lack functionality, reliability, and comfort. Recently, an implanted neuromusculoskeletal interface built upon osseointegration was developed and tested in humans, namely the Osseointegrated Human-Machine Gateway. Here, we present an embedded system to exploit the advantages of this technology. Our artificial limb controller allows for bioelectric signals acquisition, processing, decoding of motor intent, prosthetic control, and sensory feedback...
May 23, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28541256/modulation-of-brainstem-activity-and-connectivity-by-respiratory-gated-auricular-vagal-afferent-nerve-stimulation-in-migraine-patients
#5
Ronald G Garcia, Richard L Lin, Jeungchan Lee, Jieun Kim, Riccardo Barbieri, Roberta Sclocco, Ajay D Wasan, Robert R Edwards, Bruce R Rosen, Nouchine Hadjikhani, Vitaly Napadow
Migraine pathophysiology includes altered brainstem excitability, and recent neuromodulatory approaches aimed at controlling migraine episodes have targeted key brainstem relay and modulatory nuclei. In this study, we evaluated the impact of respiratory-gated auricular vagal afferent nerve stimulation (RAVANS), a novel neuromodulatory intervention based on an existing transcutaneous vagus nerve stimulation approach, in the modulation of brainstem activity and connectivity in migraine patients. We applied 3T-functional magnetic resonance imaging with improved in-plane spatial resolution (2...
April 25, 2017: Pain
https://www.readbyqxmd.com/read/28539876/plantar-sole-unweighting-alters-the-sensory-transmission-to-the-cortical-areas
#6
Laurence Mouchnino, Olivia Lhomond, Clément Morant, Pascale Chavet
It is well established that somatosensory inputs to the cortex undergo an early and a later stage of processing. The later has been shown to be enhanced when the earlier transmission decreased. In this framework, mechanical factors such as the mechanical stress to which sensors are subjected when wearing a loaded vest are associated with a decrease in sensory transmission. This decrease is in turn associated with an increase in the late sensory processes originating from cortical areas. We hypothesized that unweighting the plantar sole should lead to a facilitation of the sensory transmission...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28539836/dual-delivery-of-ngf-and-bfgf-coacervater-ameliorates-diabetic-peripheral-neuropathy-via-inhibiting-schwann-cells-apoptosis
#7
Rui Li, Jianfeng Ma, Yanqing Wu, Matthew Nangle, Shuang Zou, Yiyang Li, Jiayu Yin, Yingzheng Zhao, Helin Xu, Hongyu Zhang, Xiaokun Li, Qing Song Ye, Jian Wang, Jian Xiao
Diabetic neuropathy is a kind of insidious complications that impairs neural and vascular function and ultimately leads to somatic and visceral denervation. Basic fibroblast growth factor (bFGF) and nerve growth factor (NGF) are important neurotrophic factors for stimulating angiogenesis and improving peripheral nerve function. Administrating a single factor has good therapeutic effect on diabetic peripheral neuropathy (DPN). However, the short half-life and rapid diffusion of growth factors under physiological conditions limits its clinical applications...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28539424/ca-2-permeable-ampars-mediate-glutamatergic-transmission-and-excitotoxic-damage-at-the-hair-cell-ribbon-synapse
#8
Joy Y Sebe, Soyoun Cho, Lavinia Sheets, Mark A Rutherford, Henrique von Gersdorff, David W Raible
We report functional and structural evidence for GluA2-lacking Ca(2+)-permeable AMPARs (CP-AMPARs) at the mature hair cell ribbon synapse. By utilizing the methodological advantages of three species (of either sex), we demonstrate that CP-AMPARs are present at the hair cell synapse in an evolutionarily conserved manner. Via a combination of in vivo electrophysiological and Ca(2+) imaging approaches in the larval zebrafish, we show that hair cell stimulation leads to robust Ca(2+) influx into afferent terminals...
May 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28538681/human-thalamic-somatosensory-nucleus-ventral-caudal-vc-as-a-locus-for-stimulation-by-inputs-from-tactile-noxious-and-thermal-sensors-on-an-active-prosthesis
#9
REVIEW
Jui Hong Chien, Anna Korzeniewska, Luana Colloca, Claudia Campbell, Patrick Dougherty, Frederick Lenz
The forebrain somatic sensory locus for input from sensors on the surface of an active prosthesis is an important component of the Brain Machine Interface. We now review the neuronal responses to controlled cutaneous stimuli and the sensations produced by Threshold Stimulation at Microampere current levels (TMIS) in such a locus, the human thalamic Ventral Caudal nucleus (Vc). The responses of these neurons to tactile stimuli mirror those for the corresponding class of tactile mechanoreceptor fiber in the peripheral nerve, and TMIS can evoke sensations like those produced by the stimuli that optimally activate each class...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28535097/comparative-effectiveness-of-plantar-massage-techniques-on-postural-control-in-those-with-chronic-ankle-instability
#10
Erik A Wikstrom, Kyeongtak Song, Ashley Lea, Nastassia Brown
CONTEXT:   One of the major concerns after an acute lateral ankle sprain is the potential for development of chronic ankle instability (CAI). The existing research has determined that clinician-delivered plantar massage improves postural control in those with CAI. However, the effectiveness of self-administered treatments and the underlying cause of any improvements remain unclear. OBJECTIVES:   To determine (1) the effectiveness of a self-administered plantar-massage treatment in those with CAI as well and (2) whether the postural-control improvements were due to the stimulation of the plantar cutaneous receptors...
May 23, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28533593/effects-of-repeated-vibratory-stimulation-of-wrist-and-elbow-flexors-on-hand-dexterity-strength-and-sensory-function-in-patients-with-chronic-stroke-a-pilot-study
#11
Won-Ho Choi
[Purpose] The aim of this study was to investigate the effects of repeated vibratory stimulation to muscles related to hand functions on dexterity, strength, and sensory function in patients with chronic stroke. [Subjects and Methods] A total of 10 stroke patients with hemiplegia participated in this study. They were divided into two groups: a) Experimental and b) Control, with five randomly selected subjects for each group. The experimental group received vibratory stimulation, while the control group received the traditional physical therapy...
April 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28532582/pain-in-early-stage-parkinson-s-disease-implications-from-clinical-features-to-pathophysiology-mechanisms
#12
REVIEW
Ming-Tsung Tseng, Chin-Hsien Lin
Pain is a common non-motor symptom of Parkinson's disease (PD) that markedly impacts patients' quality of life. Although pain occurs mostly secondary to motor disability of PD, pain may antedate motor symptoms by years. Numerous studies have shown that PD patients manifest altered sensory and pain thresholds compared with control subjects. Although both levodopa and deep brain stimulation improve motor symptoms, there remains no direct correlation between motor improvement and altered pain sensitivity, suggesting that motor symptoms and pain do not necessarily share pathogenetic mechanisms...
May 19, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28530661/causal-evidence-for-retina-dependent-and-independent-visual-motion-computations-in-mouse-cortex
#13
Daniel Hillier, Michele Fiscella, Antonia Drinnenberg, Stuart Trenholm, Santiago B Rompani, Zoltan Raics, Gergely Katona, Josephine Juettner, Andreas Hierlemann, Balazs Rozsa, Botond Roska
How neuronal computations in the sensory periphery contribute to computations in the cortex is not well understood. We examined this question in the context of visual-motion processing in the retina and primary visual cortex (V1) of mice. We disrupted retinal direction selectivity, either exclusively along the horizontal axis using FRMD7 mutants or along all directions by ablating starburst amacrine cells, and monitored neuronal activity in layer 2/3 of V1 during stimulation with visual motion. In control mice, we found an over-representation of cortical cells preferring posterior visual motion, the dominant motion direction an animal experiences when it moves forward...
May 22, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28530500/sex-specific-links-in-motor-and-sensory-adaptations-to-repetitive-motion-induced-fatigue
#14
Zachary R Weber, Divya Srinivasan, Julie N Côté
The objectives of this study were to assess the sex-specific relationships between motor and sensory adaptations to repetitive arm motion-induced neck/shoulder fatigue, and measure how additional sensory stimulation affected these adaptations. Twenty-three participants performed two sessions of a repetitive pointing task until scoring 8 on the Borg CR10 scale for neck/shoulder exertion or for a maximum of 45min, with and without sensory stimulation (i.e. light touch) applied on the fatiguing shoulder. Just before reaching the task termination criteria, all participants showed changes in mean and variability of arm joint angles and experienced a five-fold increase in anterior deltoid (AD) sensory threshold in the stimulus-present condition...
May 22, 2017: Motor Control
https://www.readbyqxmd.com/read/28530341/-measuring-the-effect-of-multi-sensory-stimulation-in-the-snoezelen-room-on-sleep-quality-of-alzheimer-patients-using-actigraph
#15
Doron Todder, Meital Levartovsky, Tzvi Dwolatzky
BACKGROUND: The most common cause of dementia is Alzheimer's disease. The major manifestation of the disease is the cognitive impairment which appears at the onset of the disease. In addition to the cognitive impairment there are behavioral dysfunctions such as apathy, anxiety, depression and sleep disturbances. The treatment for the manifestations of Alzheimer is currently pharmacological and behavioral. One of the newest behavioral treatments for Alzheimer is the multi-sensory treatment using the Snoezelen room...
December 2016: Harefuah
https://www.readbyqxmd.com/read/28528963/neuronal-activity-patterns-in-the-developing-barrel-cortex
#16
Heiko J Luhmann, Rustem Khazipov
The developing barrel cortex reveals a rich repertoire of neuronal activity patterns, which have been also found in other sensory neocortical areas and in other species including the somatosensory cortex of preterm human infants. The earliest stage is characterized by asynchronous, sparse single cell firing at low frequencies. During the second stage neurons show correlated firing, which is initially mediated by electrical synapses and subsequently transforms into network bursts depending on chemical synapses...
May 18, 2017: Neuroscience
https://www.readbyqxmd.com/read/28528848/temporal-expectancies-driven-by-self-and-externally-generated-rhythms
#17
Alexander Jones, Yi-Fang Hsu, Lionel Granjon, Florian Waszak
The dynamic attending theory proposes that rhythms entrain periodic fluctuations of attention which modulate the gain of sensory input. However, temporal expectancies can also be driven by the mere passage of time (foreperiod effect). It is currently unknown how these two types of temporal expectancy relate to each other, i.e. whether they work in parallel and have distinguishable neural signatures. The current research addresses this issue. Participants either tapped a 1Hz rhythm (active task) or were passively presented with the same rhythm using tactile stimulators (passive task)...
May 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28527950/the-building-blocks-of-drinking-experience-across-men-and-women-a-case-study-with-craft-and-industrial-beers
#18
Carlos Gómez-Corona, Héctor B Escalona-Buendía, Sylvie Chollet, Dominique Valentin
In today's market, every product seems to be marked by the label of "experience". It is expected that successful products give the consumer "extraordinary experiences". The research in consumption experience is growing, but much work still needs to be done to understand the food and beverage experience. A qualitative study was conducted using contextual focus groups to explore the building blocks of consumers' drinking experience of industrial and craft beers. The results show that drinking experience is shaped by our cognitive, sensory or affective systems, especially during the core consumption experience...
May 17, 2017: Appetite
https://www.readbyqxmd.com/read/28525601/too-fast-or-too-slow-time-and-neuronal-variability-in-bipolar-disorder-a-combined-theoretical-and-empirical-investigation
#19
Georg Northoff, Paola Magioncalda, Matteo Martino, Hsin-Chien Lee, Ying-Chi Tseng, Timothy Lane
Time is an essential feature in bipolar disorder (BP). Manic and depressed BP patients perceive the speed of time as either too fast or too slow. The present article combines theoretical and empirical approaches to integrate phenomenological, psychological, and neuroscientific accounts of abnormal time perception in BP. Phenomenology distinguishes between perception of inner time, ie, self-time, and outer time, ie, world-time, that desynchronize or dissociate from each other in BP: inner time speed is abnormally slow (as in depression) or fast (as in mania) and, by taking on the role as default-mode function, impacts and modulates the perception of outer time speed in an opposite way, ie, as too fast in depression and too slow in mania...
May 19, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28525560/activity-dependent-gene-expression-in-the-mammalian-olfactory-epithelium
#20
Qiang Wang, William B Titlow, Declan A McClintock, Arnold J Stromberg, Timothy S McClintock
Activity-dependent processes are important to olfactory sensory neurons (OSNs) in several ways, such as cell survival and the specificity of axonal convergence. The identification of activity-dependent mRNAs has contributed to our understanding of OSN axon convergence, but has revealed surprisingly little about other processes. Published studies of activity-dependent mRNAs in olfactory mucosae overlap poorly, but by combining these agreements with meta-analysis of existing data we identify 443 mRNAs that respond to methods that alter OSN activity...
May 19, 2017: Chemical Senses
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