Nana Tian

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Cybersickness assessment framework(CSAF): An Open Source Repository for Standardized Cybersickness Experiments

Ronan Boulic, Nana Tian, Adriano Viegas Milani

Studies of cybersickness (CS) often require a significant invest- ment in creating the primary VR environment and other experiment- related features. In addition, minor differences in VR content in independent studies may lead to opposite results. This motivates us to introduce a standardized CS assessment framework to facilitate the development of CS-related experiments. This paper describes the concept of the framework, the current progress of the technical implementation, and future goals

IEEE2023

EGG Objective characterization of cybersickness symptoms towards navigation axis

Khalil Haroun Achache, Ali Raed Ben Mustapha, Ronan Boulic, Nana Tian

The current study sought to objectively evaluate cybersickness by utilizing Electrogastrogram (EGG) physiological data in relation to three different navigation axes: Translational movement along the longitudinal and lateral axes, and rotation along the vertical Yaw axis. EGG was employed as it has been clinically identified as a valuable tool for capturing dysfunction in the stomach. This resulted in a 2x2x2 factorial design. Results from both subjective and objective measurements (N=26, F=10) indicate that rotation along the Yaw axis is the primary factor influencing cybersickness. Additionally, it was found that individuals who are not susceptible to cybersickness do not exhibit any dominant factors. In summary, through the analysis of EGG data, several key physi- ological indicators of individual susceptibility to cybersickness were identified. The findings suggest that there is a positive correlation between the mean dominant frequency and the tachygastria ratio with individual susceptibility, while the normalgastria and normal- tachy ratio were found to be negatively correlated with individual susceptibility

IEEE2023

Cybersickness still poses a significant challenge to the widespread usage of virtual reality, leading to different levels of dis- comfort and potentially breaking the immersive experience. Researchers have attempted to discover the possible fundamental causes of cybersickness for years. Despite the longstanding interest in the research field, inconsistent results have been drawn on the contributing factors and solutions to combating cybersickness. Moreover, little attention has been paid to individual susceptibility. A consolidated explanation remains under development, requiring more empirical studies with robust and reproducible methodologies. This review presents an integrated survey connecting the findings from previous review papers and the state of the art involving empirical studies and participants. A literature review is then presented, focusing on the practical studies of different contributing factors, the pros and cons of measurements, profiles of cybersickness, and solutions to reduce this phenomenon. Our findings suggest a lack of considerations regarding user susceptibility and gender balance in between groups studies. In addition, incongruities among empirical findings raised concerns. We conclude by suggesting points of insights for future empirical investigations.

2022