Characterize the longitudinal development of passthrough rigidity and physiological costs

Determine whether the increased kinematic and oculomotor rigidity and associated physiological costs observed during approximately one hour of video passthrough use plateau or compound during extended-use scenarios such as an eight-hour workday.

Background

The study measures short-term effects of a single approximately one-hour experimental session. It finds that passthrough viewing is associated with reduced head and hand movement, more restricted visual exploration, longer fixation durations, shorter blink durations, and increased reports of eye strain, difficulty concentrating, and general discomfort.

The authors explicitly leave unresolved how these effects develop over longer periods. This question is consequential for the intended use of spatial-computing systems in sustained occupational and everyday contexts: the costs may stabilize after an initial adaptation period, or they may accumulate with continued exposure.