University of Twente Student Theses


Pace yourself! The effects of optic flow on biomechanics of movement and perceived effort

Kugis, R. (2023) Pace yourself! The effects of optic flow on biomechanics of movement and perceived effort.

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Abstract:Optic flow is fundamental for motor control and impacts the way we take and perform actions. Yet, little is known about how natural changes of optic flow might impact our behaviour and how we experience it. In this study we aim to answer two research questions: 1) How do changes in optic flow density impact the biometric parameter of cycling cadence? 2) How do natural changes of optic flow impact how we perceive effort? Two experiments were designed to explore these phenomena. In both experiments, participants were asked to cycle in virtual reality through four different optic texture conditions. The used textures were different in both experiments (simple textures in Experiment 1 and natural, complex textures in Experiment 2), but their placement and frequency in the scene were maintained. The results showed no significant difference in mean pedalling cadence between texture conditions, but participants perceived movement speed differences in different texture conditions. Furthermore, the results showed differences in perceived effort between texture conditions and experiments. Surface optical density was the optic flow descriptor with the largest change between experiments and is at least partially responsible for the changes in perception. The results also suggest an impact of factors specific to each individual. Further analysis should be done on the dataset to describe these relationships in more detail and account for their impact.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:54 computer science, 77 psychology
Programme:Interaction Technology MSc (60030)
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