keyword
MENU ▼
Read by QxMD icon Read
search

Neural stimulation

keyword
https://www.readbyqxmd.com/read/29778240/the-autonomic-neural-mechanism-of-right-ventricular-outflow-tract-tachycardia
#1
Hung-Yu Chang, Li-Wei Lo, Yu-Ruey Chen, Yu-Hui Chou, Wei-Lun Lin, Yenn-Jiang Lin, Wei-Hsian Yin, An-Ning Feng, Shih-Ann Chen
BACKGROUND: Ventricular tachycardia (VT) and ventricular premature complexes (VPCs) originating from the right ventricular outflow tract (RVOT) are generally considered as benign arrhythmias, with ECG morphology showing LBBB pattern and inferior axis. Pathogenic mechanisms in the genesis of RVOT VT/VPC remain largely unknown. We aimed to investigate the neural mechanism in RVOT ventricular arrhythmias in canine model. METHODS: Twelve mongrel dogs (13.7 ± 1...
July 2018: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29776789/transdiagnostic-effects-of-ventromedial-prefrontal-cortex-transcranial-magnetic-stimulation-on-cue-reactivity
#2
Tonisha E Kearney-Ramos, Logan T Dowdle, Daniel H Lench, Oliver J Mithoefer, William H Devries, Mark S George, Raymond F Anton, Colleen A Hanlon
BACKGROUND: Elevated frontal and striatal reactivity to drug cues is a transdiagnostic hallmark of substance use disorders. The goal of these experiments was to determine if it is possible to decrease frontal and striatal reactivity to drug cues in both cocaine users and heavy alcohol users through continuous theta burst stimulation (cTBS) to the left ventromedial prefrontal cortex (VMPFC). METHODS: Two single-blinded, within-subject, active sham-controlled experiments were performed wherein neural reactivity to drug/alcohol cues versus neutral cues was evaluated immediately before and after receiving real or sham cTBS (110% resting motor threshold, 3600 pulses, Fp1 location; N = 49: 25 cocaine users [experiment 1], 24 alcohol users [experiment 2]; 196 total functional magnetic resonance imaging scans)...
April 10, 2018: Biological Psychiatry: Cognitive Neuroscience and Neuroimaging
https://www.readbyqxmd.com/read/29776355/can-deep-transcranial-magnetic-stimulation-dtms-be-used-to-treat-substance-use-disorders-sud-a-systematic-review
#3
Karina Karolina Kedzior, Imke Gerkensmeier, Maria Schuchinsky
BACKGROUND: Deep transcranial magnetic stimulation (DTMS) is a non-invasive method of stimulating widespread cortical areas and, presumably, deeper neural networks. The current study assessed the effects of DTMS in the treatment of substance use disorders (SUD) using a systematic review. METHODS: Electronic literature search (PsycInfo, Medline until April 2017) identified k = 9 studies (k = 4 randomized-controlled trials, RCTs, with inactive sham and k = 5 open-label studies)...
May 18, 2018: BMC Psychiatry
https://www.readbyqxmd.com/read/29775838/deconstructing-skill-learning-and-its-physiological-mechanisms
#4
Danny Spampinato, Pablo Celnik
Acquiring complex motor skills involves learning a number of distinct motor components. Two fundamental elements that constitute a skill are the internal representation (i.e., the calibration of a sensorimotor map) and the sequence of movements needed to execute the task. Learning each of these likely rely on different neural substrates such as the cerebellum and primary motor cortex (M1), and physiological mechanisms. However, the specific neurophysiological processes underlying the acquisition of these components remains poorly understood...
March 27, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29773983/somatosensory-cross-modal-reorganization-in-adults-with-age-related-early-stage-hearing-loss
#5
Garrett Cardon, Anu Sharma
Under conditions of profound sensory deprivation, the brain has the propensity to reorganize. For example, intact sensory modalities often recruit deficient modalities' cortices for neural processing. This process is known as cross-modal reorganization and has been shown in congenitally and profoundly deaf patients. However, much less is known about cross-modal cortical reorganization in persons with less severe cases of age-related hearing loss (ARHL), even though such cases are far more common. Thus, we investigated cross-modal reorganization between the auditory and somatosensory modalities in older adults with normal hearing (NH) and mild-moderate ARHL in response to vibrotactile stimulation using high density electroencephalography (EEG)...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29773757/neural-signatures-of-the-processing-of-temporal-patterns-in-sound
#6
Björn Herrmann, Ingrid S Johnsrude
The ability to detect regularities in sound (i.e., recurring structure) is critical for effective perception, enabling, for example, change detection and prediction. Two seemingly unconnected lines of research concern the neural operations involved in processing regularities: one investigates how neural activity synchronizes with temporal regularities (e.g., frequency modulation; FM) in sounds, whereas the other focuses on increases in sustained activity during stimulation with repeating tone-frequency patterns...
May 17, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29773509/the-role-of-the-inferior-frontal-gyrus-in-vicarious-social-touch-a-transcranial-direct-current-stimulation-tdcs-study
#7
Leehe Peled-Avron, Laura Glasner, Hila Z Gvirts, Simone G Shamay-Tsoory
The neural mechanisms facilitating the experience of vicarious social touch are largely unknown. The right inferior frontal gyrus (rIFG) has been suggested as part of a simulation observation-execution neural network that plays a key role in the perception of tactile stimuli. Considering that vicarious social touch involves vicarious sharing of emotions, we hypothesized that emotional empathy, i.e., the ability to feel what another individual is feeling, modulates the neural responses to vicarious touch. To examine the role of the rIFG in vicarious touch and its modulation by levels of emotional empathy, we used anodal transcranial direct current stimulation (tDCS) on forty participants who observed photos depicting social touch, nonsocial touch or no touch during tDCS or sham stimulation...
April 30, 2018: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/29770525/establishment-and-characterization-of-an-embryonic-pericyte-cell-line
#8
Huaning Zhao, Jordan Darden, John C Chappell
OBJECTIVE: Pericytes are specialized perivascular cells embedded within the basement membrane. These cells envelope the abluminal surface of endothelial cells and promote microvessel homeostasis. Recent discoveries of unique pericyte functions, particularly in neural tissues, underscore the need for overcoming existing challenges in establishing a functionally validated pericyte cell line. Here, we present methodologies for addressing these challenges as well as an embryonic pericyte cell line for use with in vitro and ex vivo experimental models...
May 16, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29770490/functional-magnetic-resonance-electrical-impedance-tomography-fmreit-sensitivity-analysis-using-an-active-bidomain-finite-element-model-of-neural-tissue
#9
Rosalind J Sadleir, Fanrui Fu, Munish Chauhan
PURPOSE: A direct method of imaging neural activity was simulated to determine typical signal sizes. METHODS: An active bidomain finite-element model was used to estimate approximate perturbations in MR phase data as a result of neural tissue activity, and when an external MR electrical impedance tomography imaging current was added to the region containing neural current sources. RESULTS: Modeling-predicted, activity-related conductivity changes should produce measurable differential phase signals in practical MR electrical impedance tomography experiments conducted at moderate resolution at noise levels typical of high field systems...
May 16, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29767741/gateway-reflex-neural-activation-mediated-immune-cell-gateways-in-the-central-nervous-system
#10
Daisuke Kamimura, Takuto Ohki, Yasunobu Arima, Masaaki Murakami
The neural regulation of organs can be categorized as systemic or local. Whereas systemic regulation by the hypothalamus-pituitary-adrenal gland-mediated release of steroid hormones has been well studied, the mechanisms for local regulation have only recently emerged. Two types of local neural regulation are known, the gateway reflex and the inflammatory reflex. The gateway reflex describes a mechanism that converts regional neural stimulations into inflammatory outputs by changing the state of specific blood vessels...
May 15, 2018: International Immunology
https://www.readbyqxmd.com/read/29766766/recent-advances-in-objectifying-pain-using-neuroimaging-techniques
#11
Jessica Archibald, Freda M Warner, Oscar Ortiz, Madeson Todd, Catherine R Jutzeler
The pursuit of a physiological indicator of noxious stimulation is desirable as it has the potential to provide mechanistic information regarding acute pain, and may ultimately improve pain management strategies. Currently, there are no specific neurophysiological markers of pain to evaluate treatments. Recent attempts to identify neural correlates of pain have focused on different neuroimaging modalities. The purpose of this review is to discuss common neuroimaging techniques and findings thus far.
May 16, 2018: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29766393/linear-feature-projection-based-real-time-decoding-of-limb-state-from-dorsal-root-ganglion-recordings
#12
Sungmin Han, Jun-Uk Chu, Jong Woong Park, Inchan Youn
Proprioceptive afferent activities recorded by a multichannel microelectrode have been used to decode limb movements to provide sensory feedback signals for closed-loop control in a functional electrical stimulation (FES) system. However, analyzing the high dimensionality of neural activity is one of the major challenges in real-time applications. This paper proposes a linear feature projection method for the real-time decoding of ankle and knee joint angles. Single-unit activity was extracted as a feature vector from proprioceptive afferent signals that were recorded from the L7 dorsal root ganglion during passive movements of ankle and knee joints...
May 15, 2018: Journal of Computational Neuroscience
https://www.readbyqxmd.com/read/29766048/phasic-stimulation-of-midbrain-dopamine-neuron-activity-reduces-salt-consumption
#13
Eleanor C Sandhu, Anushka B P Fernando, Elaine E Irvine, Kyoko Tossell, Michelle Kokkinou, Justyna Glegola, Mark A Smith, Oliver D Howes, Dominic J Withers, Mark A Ungless
Salt intake is an essential dietary requirement, but excessive consumption is implicated in hypertension and associated conditions. Little is known about the neural circuit mechanisms that control motivation to consume salt, although the midbrain dopamine system, which plays a key role in other reward-related behaviors, has been implicated. We, therefore, examined the effects on salt consumption of either optogenetic excitation or chemogenetic inhibition of ventral tegmental area (VTA) dopamine neurons in male mice...
March 2018: ENeuro
https://www.readbyqxmd.com/read/29765297/group-analysis-in-fieldtrip-of-time-frequency-responses-a-pipeline-for-reproducibility-at-every-step-of-processing-going-from-individual-sensor-space-representations-to-an-across-group-source-space-representation
#14
Lau M Andersen
An important aim of an analysis pipeline for magnetoencephalographic (MEG) data is that it allows for the researcher spending maximal effort on making the statistical comparisons that will answer his or her questions. The example question being answered here is whether the so-called beta rebound differs between novel and repeated stimulations. Two analyses are presented: going from individual sensor space representations to, respectively, an across-group sensor space representation and an across-group source space representation...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29763783/sex-differences-in-the-acth-and-cortisol-response-to-pharmacological-probes-are-stressor-specific-and-occur-regardless-of-alcohol-dependence-history
#15
Robert M Anthenelli, Jaimee L Heffner, Thomas J Blom, Belinda E Daniel, Benjamin S McKenna, Gary S Wand
Women and men differ in their risk for developing stress-related conditions such as alcohol use and anxiety disorders and there are gender differences in the typical sequence in which these disorders co-occur. However, the neural systems underlying these gender-biased psychopathologies and clinical course modifiers in humans are poorly understood and may involve both central and peripheral mechanisms regulating the limbic-hypothalamic-pituitary-adrenal axis. In the present randomized, double blind, placebo-controlled, triple-dummy crossover study, we juxtaposed a centrally-acting, citalopram (2 mg/unit BMI) neuroendocrine stimulation test with a peripherally-acting, dexamethasone (Dex) (1...
May 4, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29763448/modulation-of-functional-activity-and-connectivity-by-acupuncture-in-patients-with-alzheimer-disease-as-measured-by-resting-state-fmri
#16
Weimin Zheng, Zhuangzhi Su, Xingyun Liu, Hao Zhang, Ying Han, Haiqing Song, Jie Lu, Kuncheng Li, Zhiqun Wang
Acupuncture has been used in the therapy of Alzheimer disease (AD); however, its neural mechanisms are still unclear. The aim of this study is to examine the effect of acupuncture on the functional connectivity in AD by using resting-state functional magnetic resonance imaging (rs-fMRI). Twenty-eight subjects (14 AD and 14 normal controls) participated in this study. The rs-fMRI data were acquired before and after acupuncture stimulation at the acupoints of Tai chong (Liv3) and Hegu (LI4). During the baseline resting state, by using the amplitude of low-frequency fluctuations (ALFF), we found a significantly decreased or increased ALFF in the AD patients relative to the controls...
2018: PloS One
https://www.readbyqxmd.com/read/29761991/-study-of-neuronal-spike-frequency-adaptation-with-transcranial-magneto-acoustical-stimulation
#17
Yi Yuan, Na Pang, Yudong Chen, Hongbao Sun, Xiaoli Li
Transcranial magneto-acoustical stimulation (TMAS), utilizing focused ultrasound and a magnetostatic field to generate an electric current in tissue fluid to regulate the activities of neurons, has high spatial resolution and penetration depth. The neuronal spike-frequency adaptation plays an important role in the treatment of neural information. In this paper, we study the effects of ultrasonic intensity, magnetostatic field intensity and ultrasonic frequency on the neuronal spike-frequency adaptation based on the Ermentrout neuron model...
December 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
https://www.readbyqxmd.com/read/29761380/saliva-production-and-enjoyment-of-real-food-flavors-in-people-with-and-without-dysphagia-and-or-xerostomia
#18
Angela M Dietsch, Cathy A Pelletier, Nancy Pearl Solomon
Non-food gustatory stimulation has multiple potential therapeutic benefits for people with dysphagia and xerostomia. This study examined palatability and saliva flow associated with dissolvable flavored films. Taste strips with real-food flavors dissolved on the tongues of 21 persons with dysphagia and/or xerostomia and 21 healthy age- and sex-matched adults while sublingual gauze pads absorbed saliva over randomized 3-min trials. Participants rated taste enjoyment for each trial on a hedonic general labeled magnitude scale...
May 14, 2018: Dysphagia
https://www.readbyqxmd.com/read/29760652/cadherins-interact-with-synaptic-organizers-to-promote-synaptic-differentiation
#19
Masahito Yamagata, Xin Duan, Joshua R Sanes
Classical cadherins, a set of ~20 related recognition and signaling molecules, have been implicated in many aspects of neural development, including the formation and remodeling of synapses. Mechanisms underlying some of these steps have been studied by expressing N-cadherin ( cdh2 ), a Type 1 cadherin, in heterologous cells, but analysis is complicated because widely used lines express cdh2 endogenously. We used CRISPR-mediated gene editing to generate a Human embryonic kidney (HEK)293 variant lacking Cdh2, then compared the behavior of rodent cortical and hippocampal neurons co-cultured with parental, cdh2 mutant and cdh2 -rescued 293 lines...
2018: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29760465/neural-encoding-and-production-of-functional-morphemes-in-the-posterior-temporal-lobe
#20
Daniel K Lee, Evelina Fedorenko, Mirela V Simon, William T Curry, Brian V Nahed, Dan P Cahill, Ziv M Williams
Morphemes are the smallest meaning-carrying units in human language, and are among the most basic building blocks through which humans express specific ideas and concepts. By using time-resolved cortical stimulations, neural recordings, and focal lesion evaluations, we show that inhibition of a small cortical area within the left dominant posterior-superior temporal lobe selectively impairs the ability to produce appropriate functional morphemes but does not distinctly affect semantic and lexical retrieval, comprehension, or articulation...
May 14, 2018: Nature Communications
keyword
keyword
114303
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"