Experiment Design

From the literature, it is clear that 3D produces symptoms of VIMS that can vary from one person to another. The symptoms that are mostly induced are visual and related to the occulomotor system, such as visual fatigue, eye strain, headache, etc. VIMS is not limited to these symptoms; other symptoms like disorientation and nausea can be found. For this purpose we designed an experiment that would induce motion sickness by watching a movie. The movie selected for the experiment was specially created to induce VIMS in participants.34 The points considered during the experiment design are as follows:

  • • A large screen 3D TV to display the stimulus. Viewing on a large screen prompts viewers to have a feeling of involvement in the scene, and they feel more symptoms ofVIMS.35
  • • Stimulus used was animated with specialized movements to induce VIMS. This reduces the time of the experiment, as a normal movie viewing would take more time to induce symptoms of VIMS and the symptoms induced can be rated on a reasonable scale.
  • • EEG and ECG were recorded as the objective parameters while SSQ was taken at the end to compare the subjective rating.
  • • EEG was selected as the major recording parameter because it records brains neuronal activity with high temporal resolution.
  • • Within EEG a dense array EEG device with 128 channels was selected so that brain activity with higher spatial resolution can be achieved.
  • • Participants were asked to give written consent before participating in the study. See Appendix 2C for the consent form.
  • • Maximum duration for the experiment was two hours and participants were compensated for the time spent.

The experiment flow chart is presented in Fig. 10.1.

 
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