Is it me or the room moving? Recreating the classical “moving room” experiment with virtual reality for postural control adaptation

2020 ◽  
pp. 105971232097137
Author(s):  
Harish Chander ◽  
Sachini NK Kodithuwakku Arachchige ◽  
Alana J Turner ◽  
Adam C Knight

Postural control is a complex process requiring both sensory and motor responses. Perturbation-based balance training has emerged as an effective fall prevention intervention, which provides physical postural perturbations for postural control training and adaptation. With the advent of technology, virtual reality (VR) has also been used for fall prevention training by providing visual postural perturbations. This article addresses such VR studies, including a recent experiment which involved recreating the classical “moving room” paradigm into a “virtual moving room-wall paradigm” to assess the impact of VR-induced visual postural perturbations on postural stability and control. Evidence of both compensatory and anticipatory postural responses during unexpected and expected visual postural perturbations is presented. The future scope, required virtual environment set-up variations, limitations, and significance of a “virtual moving wall” paradigm in the learning and adaptation of postural control behavior are also discussed.

2019 ◽  
Vol 9 (11) ◽  
pp. 113 ◽  
Author(s):  
Harish Chander ◽  
Sachini N. K. Kodithuwakku Arachchige ◽  
Christopher M. Hill ◽  
Alana J. Turner ◽  
Shuchisnigdha Deb ◽  
...  

Background: Virtual reality (VR) is becoming a widespread tool in rehabilitation, especially for postural stability. However, the impact of using VR in a “moving wall paradigm” (visual perturbation), specifically without and with anticipation of the perturbation, is unknown. Methods: Nineteen healthy subjects performed three trials of static balance testing on a force plate under three different conditions: baseline (no perturbation), unexpected VR perturbation, and expected VR perturbation. The statistical analysis consisted of a 1 × 3 repeated-measures ANOVA to test for differences in the center of pressure (COP) displacement, 95% ellipsoid area, and COP sway velocity. Results: The expected perturbation rendered significantly lower (p < 0.05) COP displacements and 95% ellipsoid area compared to the unexpected condition. A significantly higher (p < 0.05) sway velocity was also observed in the expected condition compared to the unexpected condition. Conclusions: Postural stability was lowered during unexpected visual perturbations compared to both during baseline and during expected visual perturbations, suggesting that conflicting visual feedback induced postural instability due to compensatory postural responses. However, during expected visual perturbations, significantly lowered postural sway displacement and area were achieved by increasing the sway velocity, suggesting the occurrence of postural behavior due to anticipatory postural responses. Finally, the study also concluded that VR could be used to induce different postural responses by providing visual perturbations to the postural control system, which can subsequently be used as an effective and low-cost tool for postural stability training and rehabilitation.


2019 ◽  
Vol 8 (4) ◽  
pp. 294-300
Author(s):  
Camila Souza Miranda ◽  
Tatiana de Paula Oliveira ◽  
Joyce Xavier Muzzi Gouvêa ◽  
Danielle Borrego Perez ◽  
Amélia Pasqual Marques ◽  
...  

2021 ◽  
Vol 263 (6) ◽  
pp. 556-567
Author(s):  
Romain Dedieu ◽  
Catherine Lavandier ◽  
Roalt Aalmoes ◽  
Henk Lania ◽  
Ingrid Legriffon ◽  
...  

To give residents better understanding of the impact of future airport scenarios, a virtual reality application with sound simulation will be tested in the frame of the European ANIMA project. The set-up has been evaluated in laboratory before being used in real situation. This paper presents the laboratory experiment whose aim is to assess the application's relevance for simulating flyovers. Although the perceptual experiment is designed to test the influence of aircraft vision crossed with aircraft sound, this paper focusses only on the impact of the landscape where the flyovers are observed. Two landscapes (park and buildings) are presented to 60 participants, in balanced order, with 12 audio-visual stimuli in both landscapes. Participants had to rate four differential semantic scales. Globally there is no influence of the landscape on the overall pleasantness, but when looking at the individual answers, it appears that three groups of participants can be discriminated. The majority of people do not change their pleasantness ratings in both landscapes, but some participants prefer experiencing the flyovers in the park landscape because it is visually more pleasant, and others prefer the opposite because it is more annoying to be submitted to aircraft noise in a green park landscape.


2020 ◽  
Vol 62 (2) ◽  
pp. 92-98
Author(s):  
Laura Piejko ◽  
Kamila Niewolak ◽  
Dariusz Fielek ◽  
Paula Pecyna ◽  
Dariusz Chełminiak ◽  
...  

Introduction: Women with breast cancer have an increasing chance of survival for many years. Multimodal, extremely effective but also aggressive treatment, often leads to disorders of neuromuscular excitability and physical fitness of the patients. Therefore, when planning the physiotherapy process of women treated for breast cancer, one should look for the most effective methods of improvement with broad neurostimulatory and neuromodulatory effects. In recent years, more and more attention has been paid to the possibilities of using virtual reality exercises in therapy. Aim: The study was to understand the impact of medical resort treatment extended with modern feedback exercises using virtual reality to improve postural control in breast cancer survivors. M aterial and Methods: A clinical, pilot, non-controlled study was conducted at the Solanki Medical Resort in Inowroclaw. 46 women aged 36 to 63 completed the study (mean 51.67 ± 6.62 years). The patients participated in spa therapy for 3 weeks. For basic medical treatment, to improve postural control, physical exercises using feedback based on virtual reality were introduced. Postural control tests performed on the stabilometric platform were used to assess the progress of therapy. Results: In the assessment of dynamic postural control, the length of the center of foot pressure (COP) movement path before the treatment was on average 278.28 cm (± 147.13) and after treatment shortened to 209.60 cm (± 86.49) which was statistically significant (p = 0.0083). In the assessment of static postural control, no statistically significant differences were found between the length of the COP pathway before treatment compared to the condition before treatment (p> 0.05). Conclusions: Medical treatment enriched with physical exercises using feedback based on virtual reality did not affect static postural control but contributed to the improvement of dynamic postural control. The results of the study should be confirmed in high-quality therapeutic experiments, including control groups.


2021 ◽  
Author(s):  
Jinlong Wu ◽  
Hui Zhang ◽  
Ziyan Chen ◽  
Ruijia Fu ◽  
Hao Yang ◽  
...  

BACKGROUND Virtual reality (VR) balance training are increasingly being pursued in biomedical research and specifically with respect to investigating the balance ability with VR .However, Existing systematic reviews have found inconsistent conclusions about the efficacy of VR in improving balance in parkinson’s disease patients (PD). OBJECTIVE To evaluate the impact of VR balance training on the balance ability of patients with PD. METHODS All major databases, including Web of Science, PubMed, Scopus, China National Knowledge Infrastructure (CNKI) and Wanfang, were searched to identify all relevant studies published in English or Chinese since September 15th, 2010. Two researchers independently conducted document retrieval, study selection, data extraction, and methodological quality evaluation. RESULTS 16 randomized controlled trials were analyzed (N = 583 patients with PD), with the methodological quality evaluation score ranging from 5 to 8 points. A random effects model was selected to combine effect sizes. Meta-analysis showed that the balance ability of PD was significantly improved after VR training compared with the control group.(standardized mean difference(SMD) = 2.127, 95% confidence interval [CI] = 1.202 - 3.052, P < 0.01, I2 = 95.1, df = 15). It is worth noting that intervention platform may be the main reason for heterogeneity. Meta regression analysis showed that no training program could predict the impact of VR training (P = 0.567-0.938) on PD balance ability. CONCLUSIONS The present meta-analysis verifies the potential rehabilitative effects of VR balance training for Parkinson disease.


2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Thunyanoot Prasertsakul ◽  
Panya Kaimuk ◽  
Wipawee Chinjenpradit ◽  
Weerawat Limroongreungrat ◽  
Warakorn Charoensuk

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