Publications

The search for techniques to modulate the sense of verticality is an important challenge for the rehabilitation of balance disorders associated with lateropulsion or retropulsion (stroke, Parkinson's, etc.). In this pilot study in healthy subjects, we tested two techniques likely to modulate the sense of verticality: immersion in a tilted virtual room (visual information) and suspended walking (somesthetic information).

Active Cervical Range of Movement
To assess the active cervical range of movement (CROM) the CROM device (Performance Attainment Associates, Lindstrom, MN, USA) was used, which is composed of two goniometers that allow measuring the range of motion in the different planes of movement [39]. Each movement is recorded three times with a pause in between, and the average of the three is used for the statistical analysis [40].

Current diagnosis of concussion relies on self-reported symptoms and medical records rather than objective biomarkers. This work uses a novel measurement setup called BioVRSea to quantify concussion status. The paradigm is based on brain and muscle signals (EEG, EMG), heart rate and center of pressure (CoP) measurements during a postural control task triggered by a moving platform and a virtual reality environment. Measurements were performed on 54 professional athletes who self-reported their history of concussion or...

Introduction: Postural control is a sensorimotor mechanism that can reveal neurophysiological disorder. The present work studies the quantitative response to a complex postural control task.
Methods: We measure electroencephalography (EEG), electromyography (EMG), and center of pressure (CoP) signals during a virtual reality (VR) experience called BioVRSea with the aim of classifying different postural control responses. The BioVRSea paradigm is based on six different phases where motion and visual stimulation are modulated throughout the experiment, inducing subjects to a different adaptive postural control strategy. The goal of the study is to assess ...

Postural instability and loss of vestibular and somatosensory acuity are among the signs encountered in Parkinson's disease (PD). Visual dependency is described in PD. These modifications of sensory input hierarchy are predictors of motion sickness (MS). The aim of this study was to assess MS susceptibility and the effects of real induced MS in posture. Sixtythree PD patients, whose medication levels (levodopa) reflected the severity of the pathology were evaluated, and 27 healthy controls, filled a MS questionnaire; 11 PD patients and 41 healthy controls were assessed by posturography using virtual reality...

Objective. To define a new neurophysiological signaturefrom electroencephalography (EEG) during a complex postural control task using the BioVRSea paradigm, consisting of virtual reality (VR) and amoving platform, mimicking the behavior of a boat on the sea.Approach. EEG(64 electrodes) datafrom 190 healthy subjectswere acquired. The experiment is composed of 6 segments(Baseline, PRE, 25%, 50%, 75%, POST). The baseline lasts 60 s while standing on the motionless platformwith amountain view in the VR goggles...

Many theories explaining a probable cause for MS have been proposed but the most prominent is the sensory conflict theory, stating that a mismatch between vestibular and visual signals causes MS. Few measurements have been made to understand and quantify the interplay between muscle activation, brain activity, and heart behavior during this condition. We introduce here a novel multimetric system called BioVRSea based on virtual reality (VR), a mechanical platform and several biomedical sensors to study the physiology associated with MS and seasickness...

Conclusion: This research demonstrated the plausibility of using VR as an alternative method to conduct the SOT. Ongoing development and testing of virtual environments are necessary before employing the technology as a replacement to current clinical tests.

A Randomized Controlled Trial. Med Sci Monit. 2019;25:4186-4192.

evidence from fMRI. Neuroreport, 15(8), 1245-1248.

Conclusion: Virtual reality vestibular rehabilitation may be useful in patients with Ménière's disease, particularly those in the early stages or having mild functional disability.

CONCLUSION: Body balance rehabilitation with virtual reality stimuli effectively improved symptoms of dizziness, quality of life, and Limits of Stability of patients with Ménière's disease.