keyword
MENU ▼
Read by QxMD icon Read
search

vestibular stimulation

keyword
https://www.readbyqxmd.com/read/27869225/noisy-galvanic-vestibular-stimulation-induces-a-sustained-improvement-in-body-balance-in-elderly-adults
#1
Chisato Fujimoto, Yoshiharu Yamamoto, Teru Kamogashira, Makoto Kinoshita, Naoya Egami, Yukari Uemura, Fumiharu Togo, Tatsuya Yamasoba, Shinichi Iwasaki
Vestibular dysfunction causes postural instability, which is prevalent in the elderly. We previously showed that an imperceptible level of noisy galvanic vestibular stimulation (nGVS) can improve postural stability in patients with bilateral vestibulopathy during the stimulus, presumably by enhancing vestibular information processing. In this study, we investigated the after-effects of an imperceptible long-duration nGVS on body balance in elderly adults. Thirty elderly participants underwent two nGVS sessions in a randomised order...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27847985/acute-peripheral-vestibular-deficit-increases-redundancy-in-random-number-generation
#2
Ivan Moser, Dominique Vibert, Marco D Caversaccio, Fred W Mast
Unilateral peripheral vestibular deficit leads to broad cognitive difficulties and biases in spatial orientation. More specifically, vestibular patients typically show a spatial bias toward their affected ear in the subjective visual vertical, head and trunk orientation, fall tendency, and walking trajectory. By means of a random number generation task, we set out to investigate how an acute peripheral vestibular deficit affects the mental representation of numbers in space. Furthermore, the random number generation task allowed us to test if patients with peripheral vestibular deficit show evidence of impaired executive functions while keeping the head straight and while performing active head turns...
November 15, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27821579/cross-modal-attention-effects-in-vestibular-cortex-during-attentive-tracking-of-moving-objects
#3
Sebastian M Frank, Liwei Sun, Lisa Forster, Peter U Tse, Mark W Greenlee
: The mid-posterior fundus of the Sylvian fissure in the human brain is central to the cortical processing of vestibular cues. At least two vestibular areas are located at this site: parieto-insular vestibular cortex (PIVC) and posterior insular cortex (PIC). It is now well established that activity in sensory systems is subject to cross-modal attention effects. Attending to a stimulus in one sensory modality enhances activity in the corresponding cortical sensory system, but simultaneously suppresses activity in other sensory systems...
November 7, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27820972/effects-of-repetitive-galvanic-vestibular-stimulation-on-spatial-neglect-and-verticality-perception-a-randomised-sham-controlled-trial
#4
Katharina Volkening, Georg Kerkhoff, Ingo Keller
Recent evidence shows that bipolar galvanic vestibular stimulation (GVS) with the cathode on the left (CL) or right (CR) mastoid ameliorates spatial neglect, extinction and verticality perception transiently and partly permanently. However, no randomised controlled trial evaluated the long-term effects of repetitive GVS in comparison to sham-GVS on exploration and verticality perception. To compare the effects of CL-GVS, CR-GVS and Sham-GVS on spatial exploration and verticality perception in right-hemispheric stroke patients with left neglect we conducted a randomised controlled trial with minimisation...
November 7, 2016: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/27799703/effects-of-galvanic-vestibular-stimulation-on-event-related-potentials
#5
Jeong-Woo Lee, Woong-Sik Park, Se-Won Yoon
[Purpose] The purpose of this study was to examine the effects of galvanic vestibular stimulation on event-related potentials. [Subjects and Methods] Forty normal female adult subjects were randomly distributed to a galvanic vestibular stimulation application group (20 subjects) and sham group (20 subjects). For galvanic vestibular stimulation application, a positive electrode was applied to the right mastoid process, and a negative electrode was applied to the left mastoid process; simulation was applied for 10 minutes...
September 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27777829/non-invasive-neuromodulation-using-time-varying-caloric-vestibular-stimulation
#6
Robert D Black, Lesco L Rogers, Kristen K Ade, Heather A Nicoletto, Heather D Adkins, Daniel T Laskowitz
Caloric vestibular stimulation (CVS) to elicit the vestibulo-ocular reflex has long been used in clinical settings to aid in the diagnosis of balance disorders and to confirm the absence of brainstem function. While a number of studies have hinted at the potential therapeutic applications of CVS, the limitations of existing devices have frustrated that potential. Current CVS irrigators use water or air during short-duration applications; however, this approach is not tenable for longer duration therapeutic protocols or home use...
2016: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/27773480/effects-of-the-stimulus-phase-on-the-air-conducted-ocular-vestibular-evoked-myogenic-potential-in-healthy-subjects
#7
Fernanda Emanuelle Almeida Castro Amorim, Alinne Martiniano Sahdo, Lydia Maria Pereira Giuliano, Denise Spinola Pinheiro, Nadia Iandoli de Oliveira Braga, Gilberto Mastrocola Manzano
OBJECTIVE: The study aimed to examine the effect of the stimulus phase of air-conducted sound on ocular vestibular evoked myogenic potentials (oVEMPs). METHODS: oVEMPs were recorded after air-conducted sounds (500Hz, 4ms duration), presented with initial condensation (positive), rarefaction (negative), and alternant polarities from 12 healthy subjects. RESULTS: Most responses showed a bifid n10 peak separated by ∼1.9ms. The most prominent sub-peak after condensation was shorter than the most prominent sub-peak after rarefaction; however, the first sub-peak was shorter after the rarefaction stimuli...
October 13, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27760820/vestibular-implants-studied-in-animal-models-clinical-and-scientific-implications
#8
Richard F Lewis
Damage to the peripheral vestibular system can result in debilitating postural, perceptual, and visual symptoms. A new potential treatment for this clinical problem is to replace some aspects of peripheral vestibular function with an implant that senses head motion and provides this information to the brain by stimulating branches of the vestibular nerve. In this review I consider animal studies performed at our institution over the past fifteen years, which have helped elucidate how the brain processes information provided by a vestibular (semicircular canal) implant and how this information could be used to improve the problems experienced by patients with peripheral vestibular damage...
October 19, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27755361/tinnitus-suppression-after-auditory-brainstem-implantation-in-patients-with-neurofibromatosis-type-2
#9
Daniel S Roberts, Steve Otto, Brian Chen, Kevin A Peng, Marc S Schwartz, Derald E Brackmann, John W House
OBJECTIVE: To evaluate whether an auditory brainstem implant (ABI) can impact levels of tinnitus in neurofibromatosis type-2 (NF2) patients who have undergone translabyrinthine craniotomy for vestibular schwannoma (VS) removal and to evaluate the burden of tinnitus in these patients. STUDY DESIGN: A retrospective case series and patient survey. SETTING: Tertiary neurotologic referral center. PATIENTS: NF2 patients who underwent translabyrinthine removal of VS and ABI placement between 1994 and 2015...
October 12, 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27752729/vision-can-recalibrate-the-vestibular-reafference-signal-used-to-re-establish-postural-equilibrium-following-a-platform-perturbation
#10
Adam J Toth, Laurence R Harris, John Zettel, Leah R Bent
Visuo-vestibular recalibration, in which visual information is used to alter the interpretation of vestibular signals, has been shown to influence both oculomotor control and navigation. Here we investigate whether vision can recalibrate the vestibular feedback used during the re-establishment of equilibrium following a perturbation. The perturbation recovery responses of nine participants were examined following exposure to a period of 11 s of galvanic vestibular stimulation (GVS). During GVS in VISION trials, occlusion spectacles provided 4 s of visual information that enabled participants to correct for the GVS-induced tilt and associate this asymmetric vestibular signal with a visually provided 'upright'...
October 17, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27739939/intraoperative-auditory-steady-state-monitoring-during-surgery-in-the-cerebellopontine-angle-for-estimation-of-postoperative-hearing-classes
#11
Stefan Rampp, Leonhard Rensch, Sebastian Simmermacher, Torsten Rahne, Christian Strauss, Julian Prell
OBJECTIVE Brainstem auditory evoked potentials (BAEPs) have been used for intraoperative monitoring of the auditory nerve for many years. However, BAEPs yield limited information about the expected postoperative hearing quality and speech perception. The auditory steady-state response (ASSR) enables objective audiograms to be obtained in patients under anesthesia. These ASSRs could be used for intraoperative estimation of hearing classes to improve the postoperative outcome and quality of life. Studies investigating the clinical use of ASSRs during total intravenous anesthesia are currently lacking...
October 14, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27730646/vestibular-feedback-maintains-reaching-accuracy-during-body-movement
#12
Craig P Smith, Raymond F Reynolds
KEY POINTS: Reaching movements can be perturbed by vestibular input, but the function of this response is unclear. Here, we applied galvanic vestibular stimulation concurrently with real body movement while subjects maintained arm position either fixed in space or fixed with respect to their body. During the fixed-in-space conditions, galvanic vestibular stimulation caused large changes in arm trajectory consistent with a compensatory response to maintain upper-limb accuracy in the face of body movement...
October 12, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27718642/assessing-subacute-mild-traumatic-brain-injury-with-a-portable-virtual-reality-balance-device
#13
W Geoffrey Wright, Jane McDevitt, Ryan Tierney, F Jay Haran, Kwadwo Osei Appiah-Kubi, Alex Dumont
PURPOSE: Balance impairment is a common sensorimotor symptom in mild traumatic brain injury (mTBI). We designed an affordable, portable virtual reality (VR)-based balance screening device (Virtual Environment TBI Screen [VETS]), which will be validated relative to the Neurocom Sensory Organization Test (SOT) to determine if it can replace commonly used postural assessments. METHODS: This preliminary study examines healthy adults (n = 56) and adults with mTBI (n = 11)...
October 10, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27716603/do-vestibular-evoked-myogenic-potential-abnormalities-in-patients-with-cochlear-implant-only-reflect-saccular-dysfunction
#14
Hasan Demirhan, Muhammet Yıldız, Özgür Yiğit
OBJECTIVE: The objective of this study was to explore the usefulness of 1000-Hz tone burst (TB) stimuli for detecting cervical vestibular-evoked myogenic potential (cVEMP) abnormalities in patients with a cochlear implant (CI). MATERIALS AND METHODS: Thirty asymptomatic patients who received unilateral CI because of severe bilateral sensorineural hearing loss were assessed for cVEMP produced by TB stimuli at two frequencies (500 and 1000 Hz) in the airway. VEMPs were recorded when the devices were switched to the on (CI-on) and off (CI-off) positions...
August 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27696205/gastric-plexiform-schwannoma-in-association-with-neurofibromatosis-type-2
#15
Satoru Kudose, Michael Kyriakos, Michael Magdi Awad
: Plexiform schwannoma (PS) is an uncommon variant of schwannoma characterized by a multinodular (plexiform) growth pattern. It comprises up to 5 % of all schwannomas. The association between PS and neurofibromatosis type 1 or type 2 (NF1/NF2) is only rarely reported. Most cases of PS occur in the skin and subcutaneous soft tissue, with only a few reports of digestive tract involvement. We describe an 18-year-old male with NF2 who had bilateral vestibular schwannomas and multiple cutaneous PSs, and a 3-year history of abdominal pain...
September 30, 2016: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/27695545/facial-functional-outcome-in-monitored-versus-not-monitored-patients-in-vestibular-schwannomas-surgery
#16
Graziano Taddei, Alfonso Marrelli, Donatella Trovarelli, Alessandro Ricci, Renato J Galzio
OBJECTIVE: Even though advances in surgical techniques have improved facial nerve outcomes, functional preservation is still an issue because injury to the facial nerve has significant physical and psychological consequences for the patient. We retrospectively review our data in VS surgery to compare the facial outcome in intraoperative facial monitored versus not-monitored patients. MATERIALS AND METHODS: 51 consecutive patients with unilateral vestibular schwannoma in the period from 2005 to 2010 were treated in our Institution...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27679562/stimulation-from-cochlear-implant-electrodes-assists-with-recovery-from-asymmetric-perceptual-tilt-evidence-from-the-subjective-visual-vertical-test
#17
Joshua J Gnanasegaram, William J Parkes, Sharon L Cushing, Carmen L McKnight, Blake C Papsin, Karen A Gordon
Vestibular end organ impairment is highly prevalent in children who have sensorineural hearing loss (SNHL) rehabilitated with cochlear implants (CIs). As a result, spatial perception is likely to be impacted in this population. Of particular interest is the perception of visual vertical because it reflects a perceptual tilt in the roll axis and is sensitive to an imbalance in otolith function. The objectives of the present study were thus to identify abnormalities in perception of the vertical plane in children with SNHL and determine whether such abnormalities could be resolved with stimulation from the CI...
2016: Frontiers in Integrative Neuroscience
https://www.readbyqxmd.com/read/27676762/effect-of-a-vestibular-rehabilitation-protocol-to-improve-the-health-related-quality-of-life-and-postural-balance-in-patients-with-peripheral-vertigo
#18
Salma Jeribi, Abdelmoneem Yahia, Imen Achour, Bouthaina Hammemi, Abdelmoneem Ghorbel, Mohamed Habib Elleuch, Sameh Ghroubi
OBJECTIVE: To determine the effect of completing a vestibular rehabilitation treatment protocol on postural balance, dizziness and quality of life in patients with peripheral vertigo. MATERIAL/PATIENTS AND METHODS: A prospective study concerning patients with instability due to unilateral peripheral vestibular disorder. The patients were evaluated with a clinical examination and a test of static and dynamic balance on the Satel(®) platform in which length, mediolateral (LongX) and anterior-posterior deviations (long Y) were monitored...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27672673/data-on-galvanic-evoked-head-movements-in-healthy-and-unilaterally-labyrinthectomized-rats
#19
Moslem Shaabani, Yones Lotfi, Seyed Morteza Karimian, Mehdi Rahgozar, Mehdi Hooshmandi
In this dataset, we analyzed galvanic-evoked head movements (GEHMs) in the spatial planes of yaw, and roll in normal and unilaterally labyrinthectomized (UL) Wistar rats. The rats were assigned in 4 groups of 10: control, sham, right-UL and left-UL. Bilateral galvanic vestibular stimulation (GVS) was presented by our "ring-shaped electrode" design (see "Short-term galvanic vestibular stimulation promotes functional recovery and neurogenesis in unilaterally labyrinthectomized rats" (M. Shaabani et al., 2016) [1])...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27639447/vertigo-and-the-processing-of-vestibular-information-a-review-in-the-context-of-predictive-coding
#20
REVIEW
Carsten M Klingner, Hubertus Axer, Stefan Brodoehl, Otto W Witte
This article investigates the processing of vestibular information by interpreting current experimental knowledge in the framework of predictive coding. We demonstrate that this theoretical framework give us insights into several important questions regarding specific properties of the vestibular system. Particularly, we discuss why the vestibular network is more spatially distributed than other sensory networks, why a mismatch in the vestibular system is more clinically disturbing than in other sensory systems, why the vestibular system is only marginally affected by most cerebral lesions, and whether there is a primary vestibular cortex...
December 2016: Neuroscience and Biobehavioral Reviews
keyword
keyword
103172
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"