Toward Understanding the Impact of Visualized Focus Levels in Virtual Reality on User Presence and Experience

Chuang-Wen You; Hsin-Ai Chen; Pin-Chieh Chen; Wen-Ni Lai; Chien Wen (Tina) Yuan; Nanyi Bi

doi:10.1145/3676527

journal article Sep 24, 2024

Toward Understanding the Impact of Visualized Focus Levels in Virtual Reality on User Presence and Experience

Chuang-Wen You

Hsin-Ai Chen

Pin-Chieh Chen

Wen-Ni Lai

Chien Wen (Tina) Yuan Nanyi Bi

Proceedings of the ACM on Human-Computer Interaction Vol. 8 No. MHCI pp. 1-30 · Association for Computing Machinery (ACM)

View at Publisher Save 10.1145/3676527

Abstract

Neurofeedback refers to the process of feeding a sensory representation of brain activity back to users in real time to improve a particular brain function, e.g., their focus and/or attention on a particular task. This study addressed the notable lack of research on methods used to visualize EEG data and their effects on the immersive quality of VR. We developed an algorithm to quantify focus, yielding a focus score. A pre-study with twenty participants confirmed its effectiveness in distinguishing between focused and relaxed mental states. Subsequently, we used this focus score to prototype a VR experience system visualizing the focus score in preconfigured manners, which was utilized in an exploratory study to assess the impact of different neurofeedback visualization methods on user engagement and focus in VR. Among all the visualization methods evaluated, the environmental scheme stood out due to its superior usability during task execution, its ability to evoke positive emotions through the visualization of objects or scenes, and its minimal deviation from user expectations. Additionally, we explored design guidelines based on collected results for future research to further refine the visualization scheme, ensuring effective integration of the focus score within the VR environment. These enhancements are crucial for designing neurofeedback visualization schemes that aim to boost participant focus in VR settings, offering significant insights into the optimization of such technologies.

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Details

Published: Sep 24, 2024
Vol/Issue: 8(MHCI)
Pages: 1-30
License: View

Authors

C

Chuang-Wen You

National Tsing Hua University, Hsinchu, Taiwan

H

Hsin-Ai Chen

National Tsing Hua University, Hsinchu, Taiwan

P

Pin-Chieh Chen

National Chengchi University, Taipei, Taiwan

W

Wen-Ni Lai

National Tsing Hua University, Hsinchu, Taiwan

C

Chien Wen (Tina) Yuan

National Taiwan University, Taipei, Taiwan

N

Nanyi Bi

National Taiwan University, Taipei, Taiwan

Funding

National Science and Technology Council of Taiwan Award: 113-2221-E-007-110, 112-2222-E-002-007, 112-2221-E-007-095, 112-2221-E-002-187, and 112-2634-F-002-006

Cite This Article

Chuang-Wen You, Hsin-Ai Chen, Pin-Chieh Chen, et al. (2024). Toward Understanding the Impact of Visualized Focus Levels in Virtual Reality on User Presence and Experience. Proceedings of the ACM on Human-Computer Interaction, 8(MHCI), 1-30. https://doi.org/10.1145/3676527

Toward Understanding the Impact of Visualized Focus Levels in Virtual Reality on User Presence and Experience

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