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Vestibular disorders

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https://www.readbyqxmd.com/read/28109990/ictal-eeg-fmri-study-of-vertiginous-seizures
#1
Alessandra Morano, Marco Carnì, Sara Casciato, Anna Elisabetta Vaudano, Jinane Fattouch, Martina Fanella, Mariarita Albini, Luca Manfredi Basili, Giulia Lucignani, Marco Scapeccia, Regina Tomassi, Elisabetta Di Castro, Claudio Colonnese, Anna Teresa Giallonardo, Carlo Di Bonaventura
Vertigo and dizziness are extremely common complaints, related to either peripheral or central nervous system disorders. Among the latter, epilepsy has to be taken into consideration: indeed, vertigo may be part of the initial aura of a focal epileptic seizure in association with other signs/symptoms, or represent the only ictal manifestation, a rare phenomenon known as "vertiginous" or "vestibular" seizure. These ictal symptoms are usually related to a discharge arising from/involving temporal or parietal areas, which are supposed to be a crucial component of the so-called "vestibular cortex"...
January 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28109477/clinical-outcomes-following-cochlear-implantation-in-children-with-inner-ear-anomalies
#2
Amal Isaiah, Daniel Lee, Felicity Lenes-Voit, Melissa Sweeney, Walter Kutz, Brandon Isaacson, Peter Roland, Kenneth H Lee
OBJECTIVE: A significant proportion of children with congenital hearing loss who are candidates for cochlear implants (CIs) may have inner ear malformations (IEMs). Surgical and speech outcomes following CI in these children have not been widely reported. METHODS: The charts of children who were evaluated for a CI between 1/1/1986 and 12/31/2014 at a university-based tertiary level pediatric cochlear implant center were reviewed. Principal inclusion criteria included (i) age 1-18 years, (ii) history of bilateral severe to profound sensorineural hearing loss, and (iii) limited benefit from binaural amplification...
February 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28107424/anchoring-the-self-to-the-body-in-bilateral-vestibular-failure
#3
Diane Deroualle, Michel Toupet, Christian van Nechel, Ulla Duquesne, Charlotte Hautefort, Christophe Lopez
Recent findings suggest that vestibular information plays a significant role in anchoring the self to the body. Out-of-body experiences of neurological origin are frequently associated with vestibular sensations, and galvanic vestibular stimulation in healthy participants anchors the self to the body. Here, we provide the first objective measures of anchoring the self to the body in chronic bilateral vestibular failure (BVF). We compared 23 patients with idiopathic BVF to 23 healthy participants in a series of experiments addressing several aspects of visuo-spatial perspective taking and embodiment...
2017: PloS One
https://www.readbyqxmd.com/read/28104012/-simultaneous-triple-semicircular-canal-plugging-and-cochlear-implantation-in-advanced-meniere-s-disease
#4
D G Zhang, L Xu, Y C Han, Y F Lyu, J F Luo, Y W Li, R J Wang, Z M Fan, H B Wang
Objective: To evaluate the feasibility of combining simultaneous triple semicircular canal plugging (TSCP) and cochlear implantation (CI) to treat vertigo and hearing loss in advanced Meniere's disease(MD) patients, so as to provide an alternative surgical procedure for treating this disorder. Methods: Data from seven patients, who were referred to our hospital and diagnosed with unilateral MD strictly meeting the criteria issued by Chinese Academy of Otolaryngology-Head and Neck Surgery Committee (2006), from Jan...
January 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28093476/muscarinic-acetylcholine-receptors-and-m-currents-underlie-efferent-mediated-slow-excitation-in-calyx-bearing-vestibular-afferents
#5
J Chris Holt, Paivi M Jordan, Anna Lysakowski, Amit Shah, Kathy Barsz, Donatella Contini
: Stimulation of vestibular efferent neurons excites calyx and dimorphic (CD) afferents. This excitation consists of fast and slow components that differ over 100-fold in activation kinetics and response duration. In turtle, efferent-mediated fast excitation arises in CD afferents when the predominant efferent neurotransmitter acetylcholine (ACh) activates calyceal nicotinic ACh receptors (nAChRs); however, it is unclear whether the accompanying efferent-mediated slow excitation is also attributed to cholinergic mechanisms...
January 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28050212/otoneurological-abnormalities-in-patients-with-friedreich-s-ataxia
#6
Bianca Simone Zeigelboim, Juliana Cristina Mesti, Vinicius Ribas Fonseca, João Henrique Faryniuk, Jair Mendes Marques, Rafaella Cardosa Cardoso, Hélio Afonso Ghizoni Teive
Introduction Friedreich's ataxia is a neurodegenerative disease and progressive by nature. It has autosomal recessive inheritance and early onset in most cases. Nystagmus and hearing loss (in some cases) make up some of the common symptoms seen in this disorder. Objective The objective of this study is to examine vestibular disorders in patients with Friedreich ataxia. Methods We conducted a retrospective cross-sectional study. We evaluated 30 patients with ages ranging from six to 72 years (mean age of 38...
January 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28043238/recurrent-ataxia-in-children-and-adolescents
#7
Michael S Salman, Samantha F Klassen, Janine L Johnston
BACKGROUND: Recurrent ataxia is encountered infrequently in clinical pediatric neurology practise and presents with diagnostic challenges. It is caused by several disorders. Our aims were to describe the epidemiology and clinical features in children with recurrent ataxia. MATERIALS AND METHODS: A retrospective review was undertaken in 185 children with chronic ataxia, who presented during 1991 to 2008. Several databases were searched to ensure optimum ascertainment...
January 3, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28027555/vestibular-and-acustic-dysfunctions-in-clean-up-workers-of-chornobyl-accident-30-years-of-follow-up
#8
D I Zabolotnyi, N S Mishchanchuk
OBJECTIVE: The objective of the work was to study the clinical and electrophysiological disorders in vestibular and acustic dysfunctions in clean up workers of Chornobyl accident depending on the dose and duration of action of ion izing radiation, the peculiarities of determined effects for 30 years after the accident. MATERIALS AND METHODS: The standard clinical and electrophysiological examinations of vestibular and acoustic ana lyzers functions were conducted in 7812 males' clean up workers including 325 persons selected for prolonged stud ies in 1986 2015...
December 2016: Problemy Radiat︠s︡iĭnoï Medyt︠s︡yny Ta Radiobiolohiï
https://www.readbyqxmd.com/read/28012675/saccadic-entropy-of-head-impulses-in-acute-unilateral-vestibular-loss
#9
Li-Chun Hsieh, Hung-Ching Lin, Guo-She Lee
BACKGROUND/PURPOSE: To evaluate the complexity of vestibular-ocular reflex (VOR) in patients with acute unilateral vestibular loss (AUVL) via entropy analysis of head impulses. METHODS: Horizontal head impulse test (HIT) with high-velocity alternating directions was used to evaluate 12 participants with AUVL and 16 healthy volunteers. Wireless electro-oculography and electronic gyrometry were used to acquire eye positional signals and head velocity signals. The eye velocity signals were then obtained through differentiation, band-pass filtering...
December 21, 2016: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28002135/functional-dizziness-from-phobic-postural-vertigo-and-chronic-subjective-dizziness-to-persistent-postural-perceptual-dizziness
#10
Marianne Dieterich, Jeffrey P Staab
PURPOSE OF REVIEW: Functional dizziness is the new term for somatoform or psychogenic dizziness. The aim of this study is to review arguments for the new nomenclature, clinical features, possible pathomechanisms, and comorbidities of functional dizziness. RECENT FINDINGS: The prevalence of functional dizziness as a primary cause of vestibular symptoms amounts to 10% in neuro-otology centers. Rates of psychiatric comorbidity in patients with structural vestibular syndromes are much higher with nearly 50% and with highest rates in patients with vestibular migraine, vestibular paroxysmia, and Ménière's disease...
December 20, 2016: Current Opinion in Neurology
https://www.readbyqxmd.com/read/28002123/functional-dizziness-from-phobic-postural-vertigo-and-chronic-subjective-dizziness-to-persistent-postural-perceptual-dizziness
#11
Marianne Dieterich, Jeffrey P Staab
PURPOSE OF REVIEW: Functional dizziness is the new term for somatoform or psychogenic dizziness. The aim of this study is to review arguments for the new nomenclature, clinical features, possible pathomechanisms, and comorbidities of functional dizziness. RECENT FINDINGS: The prevalence of functional dizziness as a primary cause of vestibular symptoms amounts to 10% in neuro-otology centers. Rates of psychiatric comorbidity in patients with structural vestibular syndromes are much higher with nearly 50% and with highest rates in patients with vestibular migraine, vestibular paroxysmia, and Ménière's disease...
February 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27958595/childhood-neurofibromatosis-type-2-nf2-and-related-disorders-from-bench-to-bedside-and-biologically-targeted-therapies
#12
M Ruggieri, A D Praticò, A Serra, L Maiolino, S Cocuzza, P Di Mauro, L Licciardello, P Milone, G Privitera, G Belfiore, M Di Pietro, F Di Raimondo, A Romano, A Chiarenza, M Muglia, A Polizzi, D G Evans
Neurofibromatosis type 2 [NF2; MIM # 101000] is an autosomal dominant disorder characterised by the occurrence of vestibular schwannomas (VSs), schwannomas of other cranial, spinal and cutaneous nerves, cranial and spinal meningiomas and/or other central nervous system (CNS) tumours (e.g., ependymomas, astrocytomas). Additional features include early onset cataracts, optic nerve sheath meningiomas, retinal hamartomas, dermal schwannomas (i.e., NF2-plaques), and (few) café-au-lait spots. Clinically, NF2 children fall into two main groups: (1) congenital NF2 - with bilateral VSs detected as early as the first days to months of life, which can be stable/asymptomatic for one-two decades and suddenly progress; and (2) severe pre-pubertal (Wishart type) NF2- with multiple (and rapidly progressive) CNS tumours other-than-VS, which usually present first, years before VSs [vs...
October 2016: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/27941523/3-d-spatial-memory-and-navigation-functions-and-disorders
#13
Thomas Brandt, Andreas Zwergal, Stefan Glasauer
PURPOSE OF REVIEW: The aim of this review is to report on the specialized neuronal systems mediating spatial orientation and navigation discovered in animal experiments. These findings have important implications for the clinical management of patients with vestibular disorders or dementia and for translational research in these fields. RECENT FINDINGS: The following anatomically and functionally separate, but nevertheless cooperative cell types have been characterized: angular head velocity cells and head direction cells, which depend on vestibular input and interact with place cells and grid cells, which represent position and distance...
February 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27941522/nystagmus-and-central-vestibular-disorders
#14
Jeong-Yoon Choi, Ji-Soo Kim
PURPOSE OF REVIEW: This review will cover the recent advances in clinical and laboratory features, pathophysiology, and treatment of central vestibular disorders. RECENT FINDINGS: Several features and mechanisms of central nystagmus have been identified over the years. Application of head impulse tests and vestibular evoked myogenic potentials has expanded our understanding of altered processing of canal-driven and otolith-driven vestibular signals in lesions involving the central vestibular structures...
February 2017: Current Opinion in Neurology
https://www.readbyqxmd.com/read/27939853/effects-of-distractors-on-upright-balance-performance-in-school-aged-children-with-attention-deficit-hyperactivity-disorder-preliminary-study
#15
Fatma Esen Aydinli, Tuna Çak, Meltem Çiğdem Kirazli, Betül Çiçek Çinar, Alev Pektaş, Ebru Kültür Çengel, Songül Aksoy
INTRODUCTION: Attention deficit hyperactivity disorder is a common impairing neuropsychiatric disorder with onset in early childhood. Almost half of the children with attention deficit hyperactivity disorder also experience a variety of motor-related dysfunctions ranging from fine/gross motor control problems to difficulties in maintaining balance. OBJECTIVES: The main purpose of this study was to investigate the effects of distractors two different auditory distractors namely, relaxing music and white noise on upright balance performance in children with attention deficit hyperactivity disorder...
November 17, 2016: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/27938621/-chronic-subjective-dizziness
#16
Y Lin, J L Wang, J H Qiu, D J Zha
Chronic subjective dizziness(CSD) was defined as persistent nonvertiginous dizziness or subjective unsteadiness. Patients are hypersensitivity to motion stimuli, such as head movement and motion of objects in the visual surrounding, and have difficulty with precise visual tasks. The concept of CSD was first proposed by Staab and Ruckenstein, which indicates relationships between chronic dizziness and acute vestibular or psychiatric disorders, including neuro-otologic type, psychiatric type or interactive type...
November 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27937029/clinical-examination-and-management-of-the-dizzy-patient
#17
Jaswinder S Sandhu, Peter A Rea
Dizziness is the commonest reason for a GP appointment over the age of 75 years and many dizzy patients will end up in hospital. This article introduces the range of vestibular disorders commonly seen in hospital practice with a symptom-based approach and discusses the range of treatments that might be considered.
December 2, 2016: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/27918366/oculographic-clinical-test-of-sensory-integration-and-balance-and-computerized-dynamic-posturography-findings-in-patients-with-psoriatic-arthritis
#18
Juan Carlos Amor-Dorado, Maria P Barreira-Fernandez, Javier Llorca, Miguel A Gonzalez-Gay
OBJECTIVE: To assess the frequency and characteristics of the oculographic findings and the usefulness of the clinical test of sensory integration and balance (CTSIB) for the evaluation of balance in patients with psoriatic arthritis (PsA) by comparing this test with the computerized dynamic posturography (CDP). STUDY DESIGN: A series of consecutive patients that fulfilled the Moll and Wright criteria for PsA and matched controls were studied. SETTING: The study was performed at the Otolaryngology Division of a tertiary reference center...
December 1, 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27910108/a-day-in-the-life-of-a-m%C3%A3-ni%C3%A3-re-s-patient-understanding-the-lived-experiences-and-mental-health-impacts-of-m%C3%A3-ni%C3%A3-re-s-disease
#19
Sarah L Bell, Jessica Tyrrell, Cassandra Phoenix
Concepts of social practice are increasingly being used to understand experiences of everyday life, particularly in relation to consumption and healthy lifestyles. This article builds on this in the context of lives disrupted and reshaped by chronic illness. It uses social practice theory to examine the lived experiences of individuals with Ménière's disease; a long-term progressive vestibular disorder, defined by episodes of severe and debilitating vertigo, aural fullness, tinnitus and sensorineural hearing loss...
December 2, 2016: Sociology of Health & Illness
https://www.readbyqxmd.com/read/27903178/worldwide-variance-in-the-potential-utilization-of-gamma-knife-radiosurgery
#20
Travis Hamilton, L Dade Lunsford
OBJECTIVE The role of Gamma Knife radiosurgery (GKRS) has expanded worldwide during the past 3 decades. The authors sought to evaluate whether experienced users vary in their estimate of its potential use. METHODS Sixty-six current Gamma Knife users from 24 countries responded to an electronic survey. They estimated the potential role of GKRS for benign and malignant tumors, vascular malformations, and functional disorders. These estimates were compared with published disease epidemiological statistics and the 2014 use reports provided by the Leksell Gamma Knife Society (16,750 cases)...
December 2016: Journal of Neurosurgery
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