IU Indianapolis ScholarWorks :: Browsing by Subject "Virtual reality"

Browsing by Subject "Virtual reality"

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Assessment of Boys' Responses to Interpersonal Conflict in Virtual Reality
(Mary Ann Liebert, 2023) Hummer, Tom A.; Wood, Zebulun M.; Miller, Kevin; McCarthy, Rachel L.; Brickman, Jocelyn E.; Neumann, Dawn; Psychiatry, School of Medicine
Background: Continuous advances in virtual reality (VR) technology have increased its potential for clinical use in the research, assessment, and treatment of mental health difficulties. One potential target for VR use is childhood behavior problems, which are often associated with social-cognitive deficits that can be difficult to measure or modify. Materials and Methods: We enrolled 36 boys between the ages of 8–13 to assess the usability of a VR device and its feasibility as a psychiatric tool for youth. Each participant experienced three virtual school cafeteria scenes that varied in antisocial content and the intentions of a virtual counterpart (VC) (control, ambiguous, or hostile). Following each scene, participants completed questions about ease and comfort in using the headset as well as an assessment of hostile attribution bias (HAB). HAB is the tendency to attribute hostile motivations to others' behaviors, which contributes to antisocial thoughts and behaviors. Following this VR use, participants completed a standard text assessment of HAB. Results: In general, participants reported the VR headset to be enjoyable and easy to use, and scenes worked as intended, with VCs in the hostile scene rated the meanest. In addition, boys with more conduct problems reported that virtual characters were meaner to them, despite no difference in text vignette measures of HAB. Conclusion: This study provides preliminary evidence supporting the further development of VR programs to assess and treat childhood behavior problems.
Benefits of Higher Cardiovascular and Motor Coordinative Fitness on Driving Behavior Are Mediated by Cognitive Functioning: A Path Analysis
(Frontiers Media, 2021-06-29) Stojan, Robert; Kaushal, Navin; Bock, Otmar Leo; Hudl, Nicole; Voelcker-Rehage, Claudia; Health Sciences, School of Health and Human Sciences
Driving is an important skill for older adults to maintain an independent lifestyle, and to preserve the quality of life. However, the ability to drive safely in older adults can be compromised by age-related cognitive decline. Performing an additional task during driving (e.g., adjusting the radio) increases cognitive demands and thus might additionally impair driving performance. Cognitive functioning has been shown to be positively related to physical activity/fitness such as cardiovascular and motor coordinative fitness. As such, a higher fitness level might be associated with higher cognitive resources and may therefore benefit driving performance under dual-task conditions. For the first time, the present study investigated whether this association of physical fitness and cognitive functioning causes an indirect relationship between physical fitness and dual-task driving performance through cognitive functions. Data from 120 healthy older adults (age: 69.56 ± 3.62, 53 female) were analyzed. Participants completed tests on cardiovascular fitness (cardiorespiratory capacity), motor coordinative fitness (composite score: static balance, psychomotor speed, bimanual dexterity), and cognitive functions (updating, inhibition, shifting, cognitive processing speed). Further, they performed a virtual car driving scenario where they additionally engaged in cognitively demanding tasks that were modeled after typical real-life activities during driving (typing or reasoning). Structural equation modeling (path analysis) was used to investigate whether cardiovascular and motor coordinative fitness were indirectly associated with lane keeping (i.e., variability in lateral position) and speed control (i.e., average velocity) while dual-task driving via cognitive functions. Both cardiovascular and motor coordinative fitness demonstrated the hypothesized indirect effects on dual-task driving. Motor coordinative fitness showed a significant indirect effect on lane keeping, while cardiovascular fitness demonstrated a trend-level indirect effect on speed control. Moreover, both fitness domains were positively related to different cognitive functions (processing speed and/or updating), and cognitive functions (updating or inhibition), in turn, were related to dual-task driving. These findings indicate that cognitive benefits associated with higher fitness may facilitate driving performance. Given that driving with lower cognitive capacity can result in serious consequences, this study emphasizes the importance for older adults to engage in a physically active lifestyle as it might serve as a preventive measure for driving safety.
Bringing Virtual Reality to Mainstream Pediatric Care
(Advocate Aurora Research Institute, 2024-07-16) Kuang, Wayne; Yang, Eric J.; Truong, Roland; Woo, Benjamin K. P.; Anesthesia, School of Medicine
Virtual reality (VR) stands as an innovative technology transforming our interactions with the digital world. Its integration into health care has proven advantageous for both patients and health care providers across multiple levels and modalities. Given that VR is becoming increasingly accessible and prevalent, health care providers should explore incorporating the technology into their practices, particularly within the pediatric population, which is becoming progressively more accustomed to the technology. This topic synopsis provides a broad discussion of the current literature, exploring current and probable future applications of VR in pediatric patient care, particularly in improving the hospital experience, facilitating education during hospitalizations, providing an alternative to pharmacological therapy for pain management, and enhancing mental health care practices.
Comparing Brief Relaxation Period to Virtual Reality Period in Reducing Dental Anxiety Prior to Root Canal Treatment: A Randomized Control Trial
(2023-06) Mintz, Caley Faith; Spolnik, Kenneth; Ehrlich, Ygal; Schrader, Stuart; Flowers, Leslie; Warner, Ned
Introduction: Anxiety is a debilitating and difficult sensation many people face on a daily basis. Up to 20% of American adults experience dental anxiety2. Dental anxiety can present both psychologically and physiologically as a barrier to starting, completing and/or finishing dental treatment.2,4 Catastrophizing the procedure, which is common practice in anxious patients, will alter and increase the perception of pain66. Approaching and understanding dental anxiety has shown to produce more positive treatment outcomes and overall increased patient satisfaction2, 4, 6. Non-pharmacological approaches to reducing dental anxiety can be a quick, non-invasive, method to put patients at ease and can save chair time for both practitioner and patient, as well as a more pleasant experience for the patient. Objectives: The goal of this study is to investigate non-pharmacologic approaches to reducing dental anxiety prior to non-surgical root canal treatment. This will be done by comparing an Auditory Alone Brief Relaxation period (ABR) to a Relaxation Virtual Reality period (RVR). Materials and Methods: 60 subjects who need non-surgical root canal treatment was randomly allocated into 2 groups. One group received earphones to listen to a guided brief relaxation recording, focusing on breathing and a body scan. The other group received virtual reality goggles and choose a scene of their liking to experience. State Trait Anxiety Indicator (STAI), Visual Analog Scale (VAS), and vitals were measured to objectively determine baseline anxiety score followed by the same metrics after brief relaxation or virtual reality experience. A student will perform root canal treatment, and VAS and vitals were again be recorded at the end of the appointment. Results: Both RVR and ABR showed a statistically significant decrease in anxiety in STAI-S (p value <.001 for both), STAI-T (p value 0.025 ABR; <.001 RVR). VAS scores also significantly reduced from T1 to T2 to T3 time frame. Discussion: Our study investigated and compared two different interventions in reducing anxiety prior to endodontic therapy. The results showed that both ABR and RVR reduced anxiety prior to endodontic therapy and had an effect even after the endodontic therapy was completed. Additionally, when comparing the time points T1, T2, and T3, heart rate decreased throughout the procedure and more importantly, after the intervention (ABR or RVR) was delivered. Both anxiety scales, STAI and VAS showed a statistical significant decrease in anxiety throughout the appointment. Conclusion: Non-pharmacological techniques like guided meditation and virtual reality are a valid and unique approach to reducing anxiety prior to endodontic therapy. Both ABR and RVR interventions reduced the feelings of anxiety throughout the entire endodontic appointment. This study displays the ease of incorporating both interventions to reduce anxiety in an economical and noninvasive fashion.
Editorial: Novel applications of virtual and mixed reality in pain research and treatment
(Frontiers Media, 2022) Harvie, Daniel S.; Smith, Ross T.; Martin, Denis; Hirsh, Adam T.; Trost, Zina; Psychology, School of Science
The effect of music on body sway when standing in a moving virtual environment
(PLOS, 2021-09-28) Dent, Shaquitta; Burger, Kelley; Stevens, Skyler; Smith, Benjamin D.; Streepey, Jefferson W.; Kinesiology, School of Health and Human Sciences
Movement of the visual environment presented through virtual reality (VR) has been shown to invoke postural adjustments measured by increased body sway. The effect of auditory information on body sway seems to be dependent on context with sounds such as white noise, tones, and music being used to amplify or suppress sway. This study aims to show that music manipulated to match VR motion further increases body sway. Twenty-eight subjects stood on a force plate and experienced combinations of 3 visual conditions (VR translation in the AP direction at 0.1 Hz, no translation, and eyes closed) and 4 music conditions (Mozart's Jupiter Symphony modified to scale volume at 0.1 Hz and 0.25 Hz, unmodified music, and no music) Body sway was assessed by measuring center of pressure (COP) velocities and RMS. Cross-coherence between the body sway and the 0.1 Hz and 0.25 Hz stimuli was also determined. VR translations at 0.1 Hz matched with 0.1Hz shifts in music volume did not lead to more body sway than observed in the no music and unmodified music conditions. Researchers and clinicians may consider manipulating sound to enhance VR induced body sway, but findings from this study would not suggest using volume to do so.
Enhancing Mechanical Engineering Education Through a Virtual Instructor in an Ai-Driven Virtual Reality Fatigue Test Lab
(2023-08) Yahyaeian, Amir Abbas; Jones, Alan; Zhang, Jing; Du, Xiaoping
This thesis demonstrates the combination of virtual reality (VR) and artificial intelligence (AI) specifically exploring the practical application of Natural Language Processing (NLP) and GPT-based models in educational VR laboratories. The objective is to design a comprehensive learning environment where users can independently engage in laboratory experiments, deriving similar educational outcomes as they would from a traditional, physical laboratory setup, particularly within the realms of Science, Technology, Engineering, and Mathematics (STEM) disciplines. Using machine learning techniques and authentic virtual reality simulating educational experiments, we propose an advanced learning platform—Virtual Reality Instructional Laboratory Environment (VRILE). A key feature of the VRILE is an AI-powered instructor capable of not only guiding the learners through the tasks but also responding intelligently to their actions in real-time. The AI constituent of the VRILE uses the GPT-2 model for text generation in the field of Natural Language Processing (NLP). To ensure the generated instructions were contextually relevant and meaningful to lab participants, the model was trained on a dataset derived from an augmentation over user interactions within the VR environment. By pushing the boundaries of how AI can be utilized in educational VR environments, this research paves the way for broader adoption across other domains of engineering education. Furthermore, it provides a solid foundation for future research in this interdisciplinary field. It marks a significant stride in the integration of technology and education, encouraging more ventures into this promising frontier.
Exploring actual and perceived levels of physical activity intensity during virtual reality active games
(Frontiers Media, 2024-02-09) Naugle, Keith E.; Cervantes, Xzaliya A.; Boone, Carolyn L.; Wind, Brandon; Naugle, Kelly M.; Exercise & Kinesiology, School of Health and Human Sciences
Background: Research suggests that engaging in active virtual reality (VR) video games can elicit light to moderate levels of physical activity (PA), making it a novel and fun mode of exercise. Further research is needed to understand the influence of VR on perceptions of exertion and enjoyment during PA. Objective: The objectives of this study are (1) to compare actual and perceived exertion within and between active VR games with varying levels of difficulty and (2) to determine how playing active VR games influences PA enjoyment during gameplay. Methods: A total of 18 participants completed four separate study sessions, during which they engaged in either a 15-min bout of traditional exercise (stationary cycling) or played one VR game. Heart rate (HR) and ratings of perceived exertion (RPE) using the Borg CR10 scale were assessed during VR gameplay and cycling. Enjoyment was measured after gameplay. VR games included playing Holopoint at level 2 and level 3 and Hot Squat. Repeated measures ANOVAs were used to examine (1) changes in HR and RPE across time within games and (2) differences in actual and perceived levels of intensity and enjoyment between games. Bivariate correlations examined the relationship between the degree of change in actual intensity and the degree of change in perceived intensity during each VR game and cycling. Results: The analyses revealed that RPE and HR significantly increased from baseline during each condition and generally increased across the 15-min of gameplay. Hot Squat and cycling elicited a significantly higher percentage of heart rate reserve (%HRR) than Holopoint at levels 2 and 3. Holopoint level 3 elicited a higher %HRR than Holopoint level 2. The participants reported greater average and max RPE during Hot Squat and cycling compared with Holopoint at levels 2 and 3. The correlations revealed a significant positive correlation between the degree of change in HR and RPE for cycling, but no significant correlations were observed for any of the VR conditions. The physical activity during Holopoint at both levels was rated as more enjoyable than Hot Squat and cycling. Conclusion: Our data support the notion that VR has the potential to alter individuals' perceptions of exertion during PA and, in particular, may reduce their awareness of increases in actual exertion.
Feasibility of a virtual reality intervention in the intensive care unit
(Elsevier, 2021) Jawed, Yameena T.; Golovyan, Dmitriy; Lopez, David; Khan, Sikandar H.; Wang, Sophia; Freund, Chauncey; Imran, Sundus; Bin Hameed, Usman; Smith, Joseph P.; Kok, Lotte; Khan, Babar A.; Medicine, School of Medicine
Background: Delirium prevention requires optimal management of pain and anxiety. Given the limitations of current pharmacologic interventions, evaluation of novel non-pharmacological interventions is required. Virtual reality (VR) stimulation may be a promising intervention because of its capability to reduce psychophysiological stress, pain, and anxiety and to restore cognitive and attentional capacities. Objective: To ascertain patients' and providers' perceptions of acceptability and safety of VR intervention in the intensive care unit (ICU). Methods: We enrolled a cohort of 15 ICU patients and 21 health care providers to administer a 15-minute session showing a relaxing beach scene with VR headsets and nature sound effects. Participants were then asked to rate their experiences on a Likert scale survey. Results: The majority of patients (86%, 12 of 14) rated the headsets as moderately to very comfortable. All had moderate or greater sense of presence in the virtual environment, and 79% (11 of 14) rated their overall experience at 3 or greater (5 indicating that they enjoyed it very much). Seventy-one percent (10 of 14) of the patients felt that their anxiety was better with VR, and 57% (8 of 14) did not notice a change in their pain or discomfort. All health care providers found the headset to be at least moderately comfortable and felt a moderate or greater sense of presence. All providers concluded that VR therapy should be available for their patients. Both groups experienced minimal side effects. Conclusion: In this prospective study of perceptions of VR therapy for ICU patients and health care providers, there was a high level of acceptance, with minimal side effects, for both groups despite their low levels of prior experience with virtual reality and video gaming.
Key Views for Visualizing Large Spaces
(Elsevier, 2009-08) Cai, Hongyuan; Zheng, Jiang Yu; Fang, Shiaofen; Tuceryan, Mihran
Image is a dominant medium among video, 3D model, and other media for visualizing environment and creating virtual access on the Internet. The location of image capture is, however, subjective and has relied on the esthetic sense of photographers up until this point. In this paper, we will not only visualize areas with images, but also propose a general framework to determine where the most distinct viewpoints should be located. Starting from elevation data, we present spatial and content information in ground-based images such that (1) a given number of images can have maximum coverage on informative scenes; (2) a set of key views can be selected with certain continuity for representing the most distinct views. According to the scene visibility, continuity, and data redundancy, we evaluate viewpoints numerically with an object-emitting illumination model. Our key view exploration may eventually reduce the visual data to transmit, facilitate image acquisition, indexing and interaction, and enhance perception of spaces. Real sample images are captured based on planned positions to form a visual network to index the area.

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