EEG based time and frequency dynamics analysis of visually induced motion sickness (VIMS)

Area of Science:

• Neuroscience
• Human-Computer Interaction
• Visual Perception

Background:

• 3D movies offer immersive experiences but are associated with viewer discomfort.
• Symptoms like eye strain, headaches, and dizziness are collectively termed visually induced motion sickness (VIMS).

Purpose of the Study:

• To compare the effects of 3D passive technology versus conventional 2D technology on viewers.
• To determine if 3D viewing causes VIMS and analyze associated physiological changes.

Main Methods:

• An experiment was conducted with participants randomly assigned to watch specially designed 2D or 3D movies for 10 minutes.
• Electroencephalogram (EEG) data was recorded, and participants completed the Simulator Sickness Questionnaire (SSQ).
• Statistical analysis (two-tailed t-test) and MATLAB analysis of EEG data were performed.

Main Results:

• Participants watching 3D movies reported significantly higher VIMS symptoms (p < 0.05) compared to the 2D group.
• EEG analysis revealed significant differences in brain activity, including frontal-theta and temporal-beta power changes between 2D and 3D viewing.
• Frontal-theta power increased over time in 2D but decreased in 3D, while beta power decreased in the temporal lobe for the 3D group.

Conclusions:

• 3D movies have negative effects, causing significant alterations in brain activity (band powers).
• These changes in brain activity are linked to the development of visually induced motion sickness (VIMS) in viewers.