keyword
MENU ▼
Read by QxMD icon Read
search

vestibular neuronitis

keyword
https://www.readbyqxmd.com/read/29447907/wilhelm-his-lasting-insights-into-hindbrain-and-cranial-ganglia-development-and-evolution
#1
REVIEW
Joel C Glover, Karen L Elliott, Albert Erives, Victor V Chizhikov, Bernd Fritzsch
Wilhelm His (1831-1904) provided lasting insights into the development of the central and peripheral nervous system using innovative technologies such as the microtome, which he invented. 150 years after his resurrection of the classical germ layer theory of Wolff, von Baer and Remak, his description of the developmental origin of cranial and spinal ganglia from a distinct cell population, now known as the neural crest, has stood the test of time and more recently sparked tremendous advances regarding the molecular development of these important cells...
February 12, 2018: Developmental Biology
https://www.readbyqxmd.com/read/29433062/suppression-of-the-vestibular-short-latency-evoked-potential-by-electrical-stimulation-of-the-central-vestibular-system
#2
Christopher J Pastras, Ian S Curthoys, Ljiljana Sokolic, Daniel J Brown
In an attempt to view the effects of the efferent vestibular system (EVS) on peripheral dynamic vestibular function, we have monitored the Vestibular short-latency Evoked Potential (VsEP) evoked by pulses of bone conducted vibration during electrical stimulation of the EVS neurons near the floor of the fourth ventricle in the brainstem of anesthetized guinea pigs. Given the reported effects of EVS on primary afferent activity, we hypothesized that EVS stimulation would cause a slight reduction in the VsEP amplitude...
February 2, 2018: Hearing Research
https://www.readbyqxmd.com/read/29395910/tmc-proteins-modulate-egg-laying-and-membrane-excitability-through-a-background-leak-conductance-in-c-%C3%A2-elegans
#3
Xiaomin Yue, Jian Zhao, Xiao Li, Yuedan Fan, Duo Duan, Xiaoyan Zhang, Wenjuan Zou, Yi Sheng, Ting Zhang, Qian Yang, Jianhong Luo, Shumin Duan, Rui Xiao, Lijun Kang
Membrane excitability is a fundamentally important feature for all excitable cells including both neurons and muscle cells. However, the background depolarizing conductances in excitable cells, especially in muscle cells, are not well characterized. Although mutations in transmembrane channel-like (TMC) proteins TMC1 and TMC2 cause deafness and vestibular defects in mammals, their precise action modes are elusive. Here, we discover that both TMC-1 and TMC-2 are required for normal egg laying in C. elegans...
January 26, 2018: Neuron
https://www.readbyqxmd.com/read/29386118/balance-control-mediated-by-vestibular-circuits-directing-limb-extension-or-antagonist-muscle-co-activation
#4
Andrew J Murray, Katherine Croce, Timothy Belton, Turgay Akay, Thomas M Jessell
Maintaining balance after an external perturbation requires modification of ongoing motor plans and the selection of contextually appropriate muscle activation patterns that respect body and limb position. We have used the vestibular system to generate sensory-evoked transitions in motor programming. In the face of a rapid balance perturbation, the lateral vestibular nucleus (LVN) generates exclusive extensor muscle activation and selective early extension of the hindlimb, followed by the co-activation of extensor and flexor muscle groups...
January 30, 2018: Cell Reports
https://www.readbyqxmd.com/read/29346751/the-brain-compass-a-perspective-on-how-self-motion-updates-the-head-direction-cell-attractor
#5
REVIEW
Jean Laurens, Dora E Angelaki
Head direction cells form an internal compass signaling head azimuth orientation even without visual landmarks. This property is generated by a neuronal ring attractor that is updated using rotation velocity cues. The properties and origin of this velocity drive remain, however, unknown. We propose a quantitative framework whereby this drive represents a multisensory self-motion estimate computed through an internal model that uses sensory prediction errors of vestibular, visual, and somatosensory cues to improve on-line motor drive...
January 17, 2018: Neuron
https://www.readbyqxmd.com/read/29325939/liponeurocytoma-of-the-cerebello-pontine-angle
#6
Carmela Chiaramonte, Sylvain Rabaste, Timothee Jacquesson, David Meyronet, François Cotton, Emmanuel Jouanneau, Moncef Berhouma
Liponeurocytoma is a very rare tumor classified as grade II (neuronal and mixed neuronal-glial tumors) according to 2016 WHO classification of Tumors of the Central Nervous System. The median age is 50-years-old and the most frequent location is the posterior cranial fossa especially within the cerebellar hemispheres; those arising in the cerebellopontine angle are exceptional. We herein report the clinical, radiological and pathological characteristics of a cerebellopontine angle liponeurocytoma in a 35-year-old woman...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29306256/isolation-and-culture-of-adult-mouse-vestibular-nucleus-neurons
#7
Aydın Him, Serap Altuntaş, Gürkan Öztürk, Ender Erdoğan, Nureddin Cengiz
Background/aim: Isolated cell cultures are widely used to study neuronal properties due to their advantages. Although embryonic animals are preferred for culturing, their morphological or electrophysiological properties may not reflect adult neurons, which may be important in neurodegenerative diseases. This paper aims to develop a method for preparing isolated cell cultures of medial vestibular nucleus (MVN) from adult mice and describe its morphological and electrophysiological properties.Materials and methods: Vestibular nucleus neurons were mechanically and enzymatically isolated and cultured using a defined medium with known growth factors...
December 19, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29304173/the-reliability-of-nonlinear-least-squares-algorithm-for-data-analysis-of-neural-response-activity-during-sinusoidal-rotational-stimulation-in-semicircular-canal-neurons
#8
Pengyu Ren, Bowen Li, Shiyao Dong, Lin Chen, Yuelin Zhang
Although many mathematical methods were used to analyze the neural activity under sinusoidal stimulation within linear response range in vestibular system, the reliabilities of these methods are still not reported, especially in nonlinear response range. Here we chose nonlinear least-squares algorithm (NLSA) with sinusoidal model to analyze the neural response of semicircular canal neurons (SCNs) during sinusoidal rotational stimulation (SRS) over a nonlinear response range. Our aim was to acquire a reliable mathematical method for data analysis under SRS in vestibular system...
2018: PloS One
https://www.readbyqxmd.com/read/29279723/diagnostics-and-therapy-of-vestibular-schwannomas-an-interdisciplinary-challenge
#9
REVIEW
Steffen Rosahl, Christopher Bohr, Michael Lell, Klaus Hamm, Heinrich Iro
Vestibular schwannomas (VS) expand slowly in the internal auditory canal, in the cerebellopontine angle, inside the cochlear and the labyrinth. Larger tumors can displace and compress the brainstem. With an annual incidence of 1:100,000 vestibular schwannoma represent 6-7% of all intracranial tumors. In the cerebellopontine angle they are by far the most neoplasm with 90% of all lesions located in this region. Magnetic resonance imaging (MRI), audiometry, and vestibular diagnostics are the mainstays of the clinical workup for patients harboring tumors...
2017: GMS Current Topics in Otorhinolaryngology, Head and Neck Surgery
https://www.readbyqxmd.com/read/29277248/communication-pathways-to-and-from-the-inner-ear-and-their-contributions-to-drug-delivery
#10
REVIEW
Alec N Salt, Keiko Hirose
The environment of the inner ear is highly regulated in a manner that some solutes are permitted to enter while others are excluded or transported out. Drug therapies targeting the sensory and supporting cells of the auditory and vestibular systems require the agent to gain entry to the fluid spaces of the inner ear, perilymph or endolymph, which surround the sensory organs. Access to the inner ear fluids from the vasculature is limited by the blood-labyrinth barriers, which include the blood-perilymph and blood-strial barriers...
December 19, 2017: Hearing Research
https://www.readbyqxmd.com/read/29272992/from-otic-induction-to-hair-cell-production-pax2-sup-egfp-sup-cell-line-illuminates-key-stages-of-development-in-mouse-inner-ear-organoid-model
#11
Stacy A Schaefer, Atsuko Y Higashi, Benjamin Loomis, Thomas Schrepfer, Guoqiang Wan, Gabriel Corfas, Gregory R Dressler, Robert Keith Duncan
Producing hair cells of the inner ear is the major goal of ongoing research that combines advances in developmental and stem cell biology. The recent advent of an inner ear organoid protocol-resulting in 3-dimensional stem cell-derived tissues resembling vestibular sensory epithelia-has sparked interest in applications such as regeneration, drug discovery, and disease modeling. In this study, we adapted this protocol for a novel mouse embryonic stem cell line with a fluorescent reporter for Pax2 expression...
December 22, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/29209162/characterization-of-cochlear-vestibular-and-cochlear-vestibular-electrically-evoked-compound-action-potentials-in-patients-with-a-vestibulo-cochlear-implant
#12
T A K Nguyen, Samuel Cavuscens, Maurizio Ranieri, Konrad Schwarz, Nils Guinand, Raymond van de Berg, Thomas van den Boogert, Floor Lucieer, Marc van Hoof, Jean-Philippe Guyot, Herman Kingma, Silvestro Micera, Angelica Perez Fornos
The peripheral vestibular system is critical for the execution of activities of daily life as it provides movement and orientation information to motor and sensory systems. Patients with bilateral vestibular hypofunction experience a significant decrease in quality of life and have currently no viable treatment option. Vestibular implants could eventually restore vestibular function. Most vestibular implant prototypes to date are modified cochlear implants to fast-track development. These use various objective measurements, such as the electrically evoked compound action potential (eCAP), to supplement behavioral information...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29200999/confirming-a-role-for-%C3%AE-9nachrs-and-sk-potassium-channels-in-type-ii-hair-cells-of-the-turtle-posterior-crista
#13
Xiaorong Xu Parks, Donatella Contini, Paivi M Jordan, Joseph C Holt
In turtle posterior cristae, cholinergic vestibular efferent neurons (VENs) synapse on type II hair cells, bouton afferents innervating type II hair cells, and afferent calyces innervating type I hair cells. Electrical stimulation of VENs releases acetylcholine (ACh) at these synapses to exert diverse effects on afferent background discharge including rapid inhibition of bouton afferents and excitation of calyx-bearing afferents. Efferent-mediated inhibition is most pronounced in bouton afferents innervating type II hair cells near the torus, but becomes progressively smaller and briefer when moving longitudinally through the crista toward afferents innervating the planum...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29190334/the-ventral-posterior-lateral-thalamus-preferentially-encodes-externally-applied-versus-active-movement-implications-for-self-motion-perception
#14
Alexis Dale, Kathleen E Cullen
Successful interaction with our environment requires that voluntary behaviors be precisely coordinated with our perception of self-motion. The vestibular sensors in the inner ear detect self-motion and in turn send projections via the vestibular nuclei to multiple cortical areas through 2 principal thalamocortical pathways, 1 anterior and 1 posterior. While the anterior pathway has been extensively studied, the role of the posterior pathway is not well understood. Accordingly, here we recorded responses from individual neurons in the ventral posterior lateral thalamus of macaque monkeys during externally applied (passive) and actively generated self-motion...
November 28, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29187554/clustering-of-heading-selectivity-and-perception-related-activity-in-the-ventral-intraparietal-area
#15
Mengmeng Shao, Gregory C DeAngelis, Dora E Angelaki, Aihua Chen
The ventral intraparietal area (VIP) of the macaque brain is a multimodal cortical region, with many cells tuned to both optic flow and vestibular stimuli. Responses of many VIP neurons also show robust correlations with perceptual judgments during a fine heading discrimination task. Previous studies have shown that heading tuning based on optic flow is represented in a clustered fashion in VIP. However, it is unknown whether vestibular self-motion selectivity is clustered in VIP. Moreover, it is not known whether stimulus- and choice-related signals in VIP show clustering in the context of a heading discrimination task...
November 29, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29163085/involvement-of-the-avian-dorsal-thalamic-nuclei-in-homing-pigeon-navigation
#16
Paulo E Jorge, Belmiro V Pinto, Verner P Bingman, John B Phillips
The navigational ability of birds has been a focus of popular and scientific interest for centuries, but relatively little is known about the neuronal networks that support avian navigation. In the brain, regions like the piriform cortex, olfactory bulbs, hippocampal formation, vestibular nuclei, and the wulst, are among the brain regions often discussed as involved in avian navigation. However, despite large literature showing a prominent role of some anterior and dorsal thalamic nuclei in mammalian spatial navigation, little is known about the role of the thalamus in avian navigation...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/29163044/partial-aminoglycoside-lesions-in-vestibular-epithelia-reveal-broad-sensory-dysfunction-associated-with-modest-hair-cell-loss-and-afferent-calyx-retraction
#17
David R Sultemeier, Larry F Hoffman
Although the effects of aminoglycoside antibiotics on hair cells have been investigated for decades, their influences on the dendrites of primary afferent neurons have not been widely studied. This is undoubtedly due to the difficulty in disassociating pathology to dendritic processes from that resulting from loss of the presynaptic hair cell. This was overcome in the present investigation through development of a preparation using Chinchilla laniger that enabled direct perilymphatic infusion. Through this strategy we unmasked gentamicin's potential effects on afferent calyces...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29155208/inflammatory-renin-angiotensin-system-disruption-attenuates-sensory-hyperinnervation-and-mechanical-hypersensitivity-in-a-rat-model-of-provoked-vestibulodynia
#18
Anuradha Chakrabarty, Zhaohui Liao, Ying Mu, Peter G Smith
Vestibulodynia is characterized by peri-vaginal mechanical hypersensitivity, hyperinnervation, and abundant inflammatory cells expressing renin-angiotensin system proteins. We developed a tractable rat model of vestibulodynia to further assess the contributions of the renin-angiotensin system. Complete Freund's adjuvant (CFA) injected into the posterior vestibule induced marked vestibular hypersensitivity throughout a 7-day test period. Numbers of axons immunoreactive for PGP9.5, calcitonin gene-related peptide, and GFRα2 were increased...
November 15, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29095392/the-differential-diagnosis-of-vertigo-in-children-a-systematic-review-of-2726-cases
#19
Meghan Davitt, Michael T Delvecchio, Stephen C Aronoff
OBJECTIVES: Vertigo is a relatively common complaint in children with 5.3% of pediatric patients complaining of this symptom. Although the causes of vertigo have been well established in adults, the diagnoses in children have not been well described. The aims of this systematic review are to discover the current information regarding etiologies of vertigo in children and to determine the most common diagnoses that present with vertigo in pediatric patients. METHODS: PubMed, Scopus, and Embase were searched using the PRISMA guidelines...
October 31, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29073639/our-sense-of-direction-progress-controversies-and-challenges
#20
Kathleen E Cullen, Jeffrey S Taube
In this Perspective, we evaluate current progress in understanding how the brain encodes our sense of direction, within the context of parallel work focused on how early vestibular pathways encode self-motion. In particular, we discuss how these systems work together and provide evidence that they involve common mechanisms. We first consider the classic view of the head direction cell and results of recent experiments in rodents and primates indicating that inputs to these neurons encode multimodal information during self-motion, such as proprioceptive and motor efference copy signals, including gaze-related information...
October 26, 2017: Nature Neuroscience
keyword
keyword
93400
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"