Publications by authors named "Elodie Chiarovano"

Background: Chemotherapy-induced peripheral neuropathy (CIPN) is a common dose-limiting toxicity for people treated for cancer. Impaired balance and falls are functional consequences of CIPN. Virtual reality (VR) technology may be able to assess balance and identify patients at risk of falls.

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People with Parkinson's disease (PD) have increased visual dependency for balance and suspected vestibular dysfunction. Immersive virtual reality (VR) allows graded manipulation of visual sensory inputs during balance tasks, and hence VR coupled with portable force platforms have emerged as feasible, affordable, and validated tools for assessing sensory-motor integration of balance. This study aims to determine (i) how people with PD perform on a VR-based visual perturbation standing balance task compared to healthy controls (HC), and (ii) whether balance performance is influenced by vestibular function, when other known factors are controlled for.

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Background: Parkinson's disease (PD) is a common multi-system neurodegenerative disorder with possible vestibular system dysfunction, but prior vestibular function test findings are equivocal.

Objective: To report and compare vestibulo-ocular reflex (VOR) gain as measured by the video head impulse test (vHIT) in participants with PD, including tremor dominant and postural instability/gait dysfunction phenotypes, with healthy controls (HC).

Methods: Forty participants with PD and 40 age- and gender-matched HC had their vestibular function assessed.

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The suppression head impulse test paradigm (SHIMP) is a newly described indicator of vestibular function which yields two measures: vestibulo-ocular reflex (VOR) gain and a saccadic response. It is an alternative and complementary test to the head impulse test paradigm (HIMP). Parkinson's disease (PD) has known saccadic and central vestibular pathway dysfunction.

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Background: Superior Canal Dehiscence is classically diagnosed with typical abnormalities on Vestibular Evoked Myogenic Potentials (VEMPs) and Computed Tomography (CT) scans.

Aim: This paper discusses the utility of the video Head Impulse Test (vHIT) in SCD.

Methods: Data from 11 ears (8 patients) with SCD were retrospectively reviewed.

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Article Synopsis
  • Parkinson's disease (PD) may lead to issues with otolith function and vestibular reflex pathways, affecting balance and fall risk.
  • In the study, participants with PD showed significantly more absent cervical vestibular evoked myogenic potentials (cVEMPs) compared to healthy controls, especially in those with a history of falls.
  • Results indicated that while PD affects cVEMP responses, tap-evoked oVEMPs are less impacted, suggesting that static and dynamic vestibular functions are unevenly affected in PD.
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Despite the importance of healthy affect to improving hospital outcomes, effective means of promoting healthy affect have yet to be elucidated. One unexplored solution lies with virtual reality (VR) technologies. The present study sought to investigate whether personalized VR interventions could improve affect levels in a university sample ( = 33) and one hospitalized patient depending upon one's baseline affective profile.

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In the present experiments, multiple balance perturbations were provided by unpredictable support-surface translations in various directions and velocities. The aim of this study was to distinguish the passive and the active phases during the pre-impact period of a fall. It was hypothesized that it should be feasible if one uses a specific quantitative kinematic analysis to evaluate the dispersion of the body segments trajectories across trials.

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Self-disclosure is an essential component of social communication that has been associated with trust, liking, and ultimately strong relationships. As technology continues to develop, so do the number of methods to create and maintain relationships. While speaking face-to-face (FtF) remains the primary way to communicate, computer-mediated communication has become more common, meaning that research into self-disclosure has expanded to new domains, including virtual reality (VR).

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Cervical VEMPs and ocular VEMPs are tests for evaluating otolith function in clinical practice. We developed a simple, portable and affordable device to record VEMP responses on patients, named μVEMP. Our aim was to validate and field test the new μVEMP device.

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Background: Dizziness and imbalance are very common complaints in clinical practice. One of the challenges is to evaluate the 'real' risk of falls. Two tools are available: the patient's self-report and the measure of the patient's balance.

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Background: Quantitative balance measurement is used in clinical practice to prevent falls. The conditions of the test were limited to eyes open, eyes closed, and sway-referenced vision. We developed a new visual perturbation to challenge balance using virtual reality (VR), measuring postural stability by a Wii Balance Board (WBB).

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The main concern with whiplash is that a large proportion of whiplash patients experience disabling symptoms or whiplash-associated disorders (WAD) for months if not years following the accident. Therefore, identifying early prognostic factors of WAD development is important as WAD have widespread clinical and economic consequences. In order to tackle that question, our study was specifically aimed at combining several methods of investigation in the same WAD patients at the acute stage and 6 months later.

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Falls in seniors are a major public health problem. Falls lead to fear of falling, reduced mobility, and decreased quality of life. Vestibular dysfunction is one of the fall risk factors.

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Experimental Objective: To provide a safe, simple, relatively inexpensive, fast, accurate way of quantifying balance performance either in isolation, or in the face of challenges provided by 3D high definition moving visual stimuli as well as by the proprioceptive challenge from standing on a foam pad. This method uses the new technology of the Wii balance board to measure postural stability during powerful, realistic visual challenges from immersive virtual reality.

Limitations Of Current Techniques: Present computerized methods for measuring postural stability are large, complex, slow, and expensive, and do not allow for testing the response to realistic visual challenges.

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Objectives: To investigate the clinical utility of VEMPs in patients suffering from unilateral vestibular schwannoma (VS) and to determine the optimal stimulation parameter (air conducted sound, bone conducted vibration) for evaluating the function of the vestibular nerve.

Methods: Data were obtained in 63 patients with non-operated VS, and 20 patients operated on VS. Vestibular function was assessed by caloric, cervical and ocular VEMP testing.

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Objective: This study compared the results of ocular and cervical vestibular evoked myogenic potentials (VEMPs) tests for healthy subjects with those for patients suffering from vestibular diseases to try to determine the clinical usefulness of combined ocular and cervical STB VEMP testing.

Methods: Thirty-two healthy volunteers and 74 patients with unilateral vestibular dysfunction underwent tests for ocular and cervical VEMPs induced by AC 100 dB nHL 500 Hz STB combined with caloric and audiometric tests.

Results: In healthy subjects, the mean P13-N23 peak-to-peak amplitude of cervical VEMPs was much larger than the mean n1-p1 peak-to-peak amplitude of ocular VEMPs.

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