Evaluation of adaptation to visually induced motion sickness by using physiological index associated with baroreflex...

Area of Science:

• Neuroscience
• Human Physiology
• Virtual Reality Studies

Background:

• Visually-induced motion sickness (VIMS) is a common issue during virtual reality (VR) and visual motion exposure.
• Objective evaluation of VIMS adaptation to repetitive stimuli is limited.
• The physiological basis of VIMS and its adaptation is not fully understood.

Purpose of the Study:

• To objectively evaluate the effects of repetitive visual stimuli on VIMS.
• To investigate the relationship between subjective VIMS scores and physiological responses.
• To identify potential biomarkers for VIMS triggers within visual content.

Main Methods:

• Subjects were repeatedly exposed to the same video image three times.
• Visually-induced motion sickness (VIMS) was assessed using subjective scoring.
• A physiological index, rho(max) (reflecting baroreflex function), was measured.
• Changes in rho(max) were analyzed in relation to VIMS intensity over time.

Main Results:

• Adaptation to VIMS was indicated by a decrease in both subjective scores and the rho(max) index.
• Some subjects exhibited increased rho(max) in specific video regions across trials.
• These rho(max) changes suggest localized VIMS-inducing elements within the visual stimuli.

Conclusions:

• Repetitive exposure can lead to adaptation in visually-induced motion sickness (VIMS).
• The rho(max) index serves as an objective measure of VIMS adaptation and baroreflex changes.
• Analyzing temporal rho(max) changes can pinpoint specific visual content responsible for VIMS.