scholarly journals Investigating Head Movements Induced by ‘Riloid’ Patterns in Migraine and Control Groups Using a Virtual Reality Display

2018 ◽  
Vol 31 (8) ◽  
pp. 753-777
Author(s):  
Louise O’Hare ◽  
Alex Sharp ◽  
Patrick Dickinson ◽  
Graham Richardson ◽  
John Shearer
Keyword(s):  
Virtual Reality ◽  
Visual System ◽  
Visual Stimulus ◽  
Vestibular System ◽  
Visual Display ◽  
Head Movements ◽  
Illusory Motion ◽  
Control Groups ◽  
Visual Discomfort ◽  
And Control

Abstract Certain striped patterns can induce illusory motion, such as those used in op-art. The visual system and the vestibular system work together closely, and so it is possible that illusory motion from a visual stimulus can result in uncertainty in the vestibular system. This increased uncertainty may be measureable in terms of the magnitude of head movements. Head movements were measured using a head-mounted visual display. Results showed that stimuli associated with illusory motion also seem to induce greater head movements when compared to similar stimuli. Individuals with migraine are more susceptible to visual discomfort, and this includes illusory motion from striped stimuli. However, there was no evidence of increased effect of illusory motion on those with migraine compared to those without, suggesting that while motion illusions may affect discomfort judgements, this is not limited to only those with migraine.

Immersive Virtual Reality Improves Labor and Delivery Experience for Women: A Randomized Controlled Trial

2021 ◽  
Author(s):  
Elif Gizem Carus ◽  
Nazli Albayrak ◽  
Selen Gur Ozmen ◽  
Halit Mert Bildirici
Keyword(s):  
Virtual Reality ◽  
Patient Satisfaction ◽  
Rating Scale ◽  
Secondary Outcome ◽  
Immersive Virtual Reality ◽  
Labor And Delivery ◽  
Control Groups ◽  
Randomized Controlled ◽  
Pain Scores ◽  
And Control

Abstract Objective: To evaluate the effectiveness of immersive Virtual Reality (VR) in laboring women on patient satisfaction as a distractive tool and pain relief.Methods: Randomized, controlled clinical trial with 42 laboring women allocated to VR intervention and control groups. Among the VR group, patient satisfaction with the use of VR was assessed by a Virtual Reality Satisfaction Survey and questioning whether they would choose VR in future labor. As a primary outcome patient satisfaction scores regarding the overall labor and delivery experience were compared between the two groups. A secondary outcome was pain assessed by a visual pain rating scale in the early and active phases of labor in both groups. Psychometric information was also collected from participants in each group using Beck Anxiety Inventory and Beck Depression Inventory. Results: We observed a high level of patient satisfaction with the use of immersive VR during labor. The survey revealed a mean satisfaction score of 89.6 ± 10.8 out of a maximum of 100. 20 out of 21 (95%) women in the VR group stated that they would like to use VR again in future labor. VR improved pain scores in early labor and contributed positively to overall labor and delivery experience. The mean pain score pre-VR was 2.6±1.2 compared to 2.0±1.3, post-VR, respectively (p<0.01). Anxiety and depression scores were similar in the intervention and control groups (p=0.103, p=0.13, respectively). Conclusion: Immersive VR application during labor was feasible and associated with higher patient satisfaction based on our study. VR also improved pain scores in early labor before epidural placement. Immersive VR may find a place as an adjunct in Labor and Delivery Units to improve the lengthy labor experience for women. Larger studies are needed to confirm these observations. Trial Registration: ClinicalTrials.gov: NCT05032456 / 02/09/2021https://clinicaltrials.gov/ct2/show/NCT05032456

scholarly journals Investigation of the effect of the virtual reality application on experimental pain severity in healthy

2019 ◽  
Vol 65 (3) ◽  
pp. 446-451
Author(s):  
Dilek Karaman ◽  
Funda Erol ◽  
Dilek Yılmaz ◽  
Yurdanur Dikmen
Keyword(s):  
Blood Pressure ◽  
Virtual Reality ◽  
Control Group ◽  
Control Groups ◽  
Adult Type ◽  
Significant Difference ◽  
The Mean ◽  
And Control ◽  
Experimental Group ◽  
Virtual Reality Application

SUMMARY OBJECTIVE: This study aimed to investigate the effect of virtual reality application on experimental ischemic pain created with a blood pressure instrument in healthy volunteers. METHODS: The research sample consisted of 172 volunteer adult students who conformed to the inclusion criteria. These individuals were assigned into an experimental (n=86) and a control group (n=86) by a simple randomization method. All individuals in the experimental and control groups wereexperimentally subjected to pain for two minutes by applying 260 mmHg of pressure 3-4 cm above the antecubital region of the left arm with an aneroid adult-type blood pressure instrument. During the procedure, the volunteers in the experimental group watched virtual reality images, while those in the control group received no intervention. Immediately after the procedure, the pain levels of the individuals in both groups were assessed with a Visual Analog Scale (VAS). RESULTS: We found that the mean pain score of the individuals in the experimental group was 2.62±1.82, and that of individuals in the control group was 5.75±1.65. Results of the statistical analysis showed a statistically significant difference between the mean pain scores of the individuals in the experimental and control groups (p<0.001). CONCLUSION: This study found that the use of virtual reality was effective in reducing the level of pain in healthy individuals. This method used a smartphone with widespread availability and ease of transportation, which can be used by health professionals as a non-pharmacological method in the management of pain.

Measurement of visual sensitivity in migraine: Validation of two scales and correlation with visual cortex activation

Cephalalgia ◽  
2014 ◽  
Vol 35 (7) ◽  
pp. 585-592 ◽  
Author(s):  
Brett Cucchiara ◽  
Ritobrato Datta ◽  
Geoffrey K Aguirre ◽  
Kimberly E Idoko ◽  
John Detre
Keyword(s):  
Visual Cortex ◽  
Visual Stimulus ◽  
Visual Sensitivity ◽  
Strongly Correlated ◽  
Bold Signal ◽  
Visual Discomfort ◽  
Bold Fmri ◽  
Signal Change ◽  
And Control

Objective The objectives of this article are to compare interictal and ictal visual sensitivity between migraine and controls using two published questionnaires, and to correlate responses with a physiologic measure of visual cortex activation. Methods Migraine with (MWA, n = 51) and without (MwoA, n = 45) aura and control individuals ( n = 45) were enrolled and underwent BOLD fMRI with a visual stimulus. The visual discomfort score (VDS) assessed interictal and the migraine photophobia score (MPS) assessed ictal visual sensitivity. Result VDS was significantly higher both in MWA and MwoA vs controls (both p < 0.0001). MPS was greater in MWA vs MwoA ( p = 0.008). Ictal and interictal visual sensitivity strongly correlated in MWA ( p = 0.004) but not MwoA patients ( p = 0.12). BOLD activation in visual cortex was greater in MWA vs controls (2.7% vs 2.3%, p = 0.003) but similar between MwoA and controls. Increasing VDS was associated with greater BOLD signal change in MWA ( p = 0.03) but not MwoA ( p = 0.65) or controls ( p = 0.53). MPS did not correlate with BOLD activation in either group. Conclusion Increased interictal visual sensitivity is present both in MWA and MwoA. However, the correlation with ictal visual sensitivity and with cortical hyper-responsivity varies between MWA and MwoA, suggesting underlying differences between groups.

scholarly journals Interictal cortical hyperresponsiveness in migraine is directly related to the presence of aura

Cephalalgia ◽  
2013 ◽  
Vol 33 (6) ◽  
pp. 365-374 ◽  
Author(s):  
Ritobrato Datta ◽  
Geoffrey K Aguirre ◽  
Siyuan Hu ◽  
John A Detre ◽  
Brett Cucchiara
Keyword(s):  
Blood Flow ◽  
Cerebral Blood Flow ◽  
Visual Stimulus ◽  
Visual Stimulation ◽  
Blood Oxygen Level Dependent ◽  
Blood Oxygen Level ◽  
Visual Discomfort ◽  
Bold Fmri ◽  
Control Subjects ◽  
And Control

Objective The objective of this study was to compare the interictal cortical response to a visual stimulus between migraine with aura (MWA), migraine without aura (MwoA), and control subjects. Methods In a prospective case-control study, blood oxygen level-dependent functional magnetic resonance imaging (BOLD fMRI) was used to assess the response to a visual stimulus and arterial spin labeled perfusion MR to determine resting cerebral blood flow. A standardized questionnaire was used to assess interictal visual discomfort. Results Seventy-five subjects (25 MWA, 25 MwoA, and 25 controls) were studied. BOLD fMRI response to visual stimulation within primary visual cortex was greater in MWA (3.09 ± 0.15%) compared to MwoA (2.36 ± 0.13%, p = 0.0008) and control subjects (2.47 ± 0.11%, p = 0.002); responses were also greater in the lateral geniculate nuclei in MWA. No difference was found between MwoA and control groups. Whole brain analysis showed that increased activation in MWA was confined to the occipital pole. Regional resting cerebral blood flow did not differ between groups. MWA and MwoA subjects had significantly greater levels of interictal visual discomfort compared to controls ( p = 0.008 and p = 0.005, respectively), but this did not correlate with BOLD response. Conclusions Despite similar interictal symptoms of visual discomfort, only MWA subjects have cortical hyperresponsiveness to visual stimulus, suggesting a direct connection between cortical hyperresponsiveness and aura itself.

scholarly journals Walking Practice Combined with Virtual Reality Contributes to Early Acquisition of Symmetry Prosthetic Walking: An Experimental Study Using Simulated Prosthesis

Symmetry ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 2282
Author(s):  
Kazuki Fukui ◽  
Noriaki Maeda ◽  
Makoto Komiya ◽  
Shogo Tsutsumi ◽  
Keita Harada ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Lower Limb ◽  
Walking Speed ◽  
Control Groups ◽  
Head Mounted Display ◽  
Swing Speed ◽  
And Control ◽  
Lower Limb Amputees ◽  
Rate Of Improvement

Virtual reality (VR)-based rehabilitation has been used in lower limb amputees; however, the extent to which VR is effective in reacquiring symmetrical gait in lower limb amputees is unclear. The purpose of this study was to confirm whether a VR intervention is effective in obtaining a simulated prosthetic gait. The participants were 24 healthy males who had never worn a simulated prosthesis. They were divided into three groups: VR, tablet, and control groups. The intervention consisted of 5 min of in situ stepping on parallel bars and watching a video of a simulated prosthetic leg walker on a head-mounted display or a tablet. Measurements included Gait Up parameters during a 10-m walk and immersion scores. After the intervention, there was a significant interaction between walking speed and leg swing speed in the VR group. The rate of improvement in walking speed and immersion scores was significantly higher in the VR group than in the other two groups, and there was a significant positive correlation between the rate of improvement and immersion scores. Compared to the tablet and control groups, the VR group showed the highest rate of immersion and improvement in walking speed.

scholarly journals Virtual reality distraction decreases pain during daily dressing changes following haemorrhoid surgery

2019 ◽  
Vol 47 (9) ◽  
pp. 4380-4388 ◽  
Author(s):  
Jie Ding ◽  
Yanyan He ◽  
Lishan Chen ◽  
Bili Zhu ◽  
Qiuping Cai ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Control Group ◽  
Control Groups ◽  
Open Label ◽  
Pain Scores ◽  
Significant Difference ◽  
The Mean ◽  
Baseline Characteristics ◽  
Dressing Change ◽  
And Control

Objective To investigate whether immersive virtual reality (VR) distraction could decrease pain during postoperative dressing changes. Methods This was a prospective, open-label randomized clinical trial that enrolled patients that had undergone haemorrhoidectomy. Patients were randomly assigned to one of two groups: a control group that received the standard pharmacological analgesic intervention during dressing change and a VR group that received VR distraction during dressing change plus standard pharmacological analgesic intervention. Pain scores and physiological measurements were collected before, during and after the first postoperative dressing change. Results A total of 182 patients were randomly assigned to the control and VR groups. The baseline characteristics of the VR and control groups were comparable. There was no significant difference in mean pain scores prior to and after the dressing change procedure between the two groups. The mean pain scores at the 5-, 10-, 15- and 20-min time-points during the first dressing change were significantly lower in the VR group compared with the control group. Heart rates and oxygen saturation were not significantly different between the two groups. Conclusion Immersive VR was effective as a pain distraction tool in combination with standard pharmacological analgesia during dressing change in patients that had undergone haemorrhoidectomy.

scholarly journals Comparative effects of virtual reality training and sensory motor training on bone morphogenic proteins and inflammatory biomarkers in post-traumatic osteoarthritis

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Gopal Nambi ◽  
Walid Kamal Abdelbasset ◽  
Shereen H. Elsayed ◽  
Mona A. Khalil ◽  
Saud M. Alrawaili ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Functional Disability ◽  
Inflammatory Biomarkers ◽  
Motor Training ◽  
Virtual Reality Training ◽  
Control Groups ◽  
Bone Morphogenic Proteins ◽  
Sensory Motor ◽  
Post Traumatic ◽  
And Control

Abstract The objective of this study is to compare the effects of virtual reality training (VRT) and sensory-motor training (SMT) in bone morphogenetic proteins (BMP) and inflammatory biomarkers expression in post-traumatic osteoarthritis (PTOA) after the anterior cruciate ligament injury. Through a simple random sampling method, 60 eligible participants were allocated into VRT (n = 20), SMT (n = 20), and control groups (n = 20). They underwent training programs for 4 weeks. Clinical (pain intensity and functional disability) and biochemical (bone morphogenic proteins and inflammatory biomarkers) values were measured at baseline, after 4 weeks, 8 weeks and 3 months follow up. Four weeks following training, the VRT group shows more significant changes in pain intensity and functional disability than SMT and control groups (P < 0.001). Bone morphogenic protein (BMP) measures such as BMP 2, 4, 6, and 7 don’t show any significant changes between the groups. But at the same time, the VRT group shows positive improvement in inflammatory biomarkers (CRP, TNF-α, IL-2, IL-4, IL-6) analysis than the other two groups (P < 0.001). Our study suggests that including virtual reality training in PTOA shows beneficial changes in pain, functional disability, and modification of inflammatory biomarkers than sensory-motor training, but at the same time it shows a negligible effect on bone morphogenic proteins.

Effectiveness of a virtual-reality anti-stigma application to reduce the stigma of depression: a randomized controlled trial (Preprint)

2021 ◽  
Author(s):  
Wey Guan Lem ◽  
Ayako Kohyama-Koganeya ◽  
Toki Saito ◽  
Hiroshi Oyama
Keyword(s):  
Virtual Reality ◽  
Medical Information ◽  
Intervention Group ◽  
University Hospital ◽  
Control Group ◽  
Public Stigma ◽  
Control Groups ◽  
Post Intervention ◽  
Significant Difference ◽  
And Control

BACKGROUND Public stigma against depression contributes to low employment rates among individuals with depression and self-stigmatization of people with depression. Contact-based educational (CBE) interventions, either using in-person contact or video-based contact, have been shown to reduce stigma against mental illness effectively. In-person contacts can stimulate empathy in participants but are challenging to arrange, while video-based contact is cost-effective but encounters difficulty stimulating empathy towards the patient. In this paper, we examined the usefulness of the virtual-reality anti-stigma (VRAS) application to reduce public stigma. OBJECTIVE To develop and evaluate a VRAS application that could provide CBE intervention without using real patients. METHODS Sixteen medical students were recruited and randomized 1:1 to intervention and control groups. Participants in the intervention group (VRAS group) used the VRAS application, while those in the control group watched video material on depression. Participants' depression stigma score was assessed using the Depression Stigma Scale (DSS) and Attitudinal Social Distance (ASD), both pre-and post-intervention. The feasibility of both the VRAS application and video, and the utility of the VRAS application was also evaluated post-intervention. RESULTS Feasibility score was significantly higher in the intervention group (mean 5.63, SD 0.74) than in the control group (mean 3.88, SD 1.73; P=.03). This result indicates that the VRAS application promoted an understanding of stigma in participants. However, no significant differences were apparent between the intervention and control groups for DSS (intervention: mean 35.13, SD 5.30; control: mean 35.38, SD 4.50; P=.92) or ASD (intervention: mean 12.25, SD 3.33; control: mean 11.25, SD 1.91; P=.92). Stigma scores tended to decrease, but the stigma-reducing effects of the VRAS application were not statistically significant for either DSS (pre: mean 33.00, SD 4.44; post: mean 35.13, SD 5.30; P=.12) or ASD (pre: mean 13.25, SD 3.92; post: mean 12.25, SD 3.33; P=.12). CONCLUSIONS No significant differences in mean DSS or ASD were seen between VRAS and control groups. However, one item in the feasibility score showed a significant difference, and feedback comments suggested that VRAS was effective in educating about the stigma of depression. CLINICALTRIAL University hospital Medical Information Network Clinical Trials Registry (UMIN-CTR) UMIN000043020; https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000049109

scholarly journals Subtitles in virtual reality: Guidelines for the integration of subtitles in 360º content

2020 ◽  
Vol 25 (3) ◽  
pp. 643-661
Author(s):  
Belén Agulló ◽  
Anna Matamala
Keyword(s):  
Virtual Reality ◽  
Hard Of Hearing ◽  
Head Movement ◽  
Visual Information ◽  
Visual Display ◽  
Head Movements ◽  
Fixed Position ◽  
Hearing Results ◽  
Reception Study ◽  
Popular Medium

Immersive content has become a popular medium for storytelling. This type of content is typically accessed via a head-mounted visual display within which the viewer is located at the center of the action with the freedom to look around and explore the scene. The criteria for subtitle position for immersive media still need to be defined. Guiding mechanisms are necessary for circumstances in which the speakers are not visible and viewers, lacking an audio cue, require visual information to guide them through the virtual scene. The aim of this reception study is to compare different subtitling strategies: always-visible position to fixed-position and arrows to radar. To do this, feedback on preferences, immersion (using the ipq questionnaire) and head movements was gathered from 40 participants (20 hearing and 20 hard of hearing). Results show that always-visible subtitles with arrows are the preferred option. Always-visible and arrows achieved higher scores in the ipq questionnaire than fixed-position and radar. Head-movement patterns show that participants move more freely when the subtitles are always-visible than when they are in a fixed position, meaning that with always-visible subtitles the experience is more realistic, because the viewers do not feel constrained by the implementation of subtitles.

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