PROBLEM STATEMENT AND OBJECTIVES
3D stereoscopic technology is growing day-by-day with advancements in hardware as well as in content. Viewers look at 3D as the future of display devices. If problems ofVIMS persist in 3D stereoscopy, viewers might be struck by VIMS or certain symptoms of VIMS. This will ruin the entertainment of the viewers, and they will have to pay for unexpected costs. Therefore it is necessary to evaluate the symptoms ofVIMS that are produced by 3D stereoscopy. These symptoms should be compared to a normal 2D display device. The symptoms should be recorded, analyzed, and compared between the two devices. Based on the comparative analysis, symptoms ofVIMS in 3D could be adjudged.
For the evaluation of VIMS, it is important to know that how VIMS can be easily induced and evaluated. Evaluation of VIMS requires different methods that can be subjective (questionnaire or interviews) and objective (physiological data). A combination of different data provides a suitable outcome. In this study, the SSQ in combination with electrocardiography (ECG) and electroencephalography (EEG) signals were recorded for the comparative analysis of 3D display with 2D display. EEG signals directly measure the neuronal changes occurring due to VIMS or cognitive fatigue and can be quantitatively analyzed using computational techniques to determine useful information for assessment of brain states.16,17 Similarly, ECG signals that refer to the dynamics of heartbeats are useful to study the heart rate variability (HRV) during any mental state such as visual discomfort.18
The experiment was designed with the following objectives:
- • To find the brain regions that are activated when VIMS is present.
- • To evaluate and compare the brain wave changes and level of motion sickness in individuals induced by 2D and 3D movies.
- • To propose an objective indicator/measurement of VIMS using EEG signals.