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Faculty of Medical Sciences

How does virtual visual information, extracted from Optic Flow and Egomotion, influence gait patterns when walking on a treadmill?

Buseman, H.T. (Lena) (2016) How does virtual visual information, extracted from Optic Flow and Egomotion, influence gait patterns when walking on a treadmill? thesis, Human Movement Sciences.

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Abstract

Aim: To uncover the influence that visual information provided in virtual reality has on treadmill walking and the influence of mechanical properties of the treadmill on the gait pattern. The parts of visual information that will be addressed are that provided by optic flow and egomotion. Methods: 18 participants (aged 22.7 � 2.1 years) were recruited to walk overground and on a split-belt, instrumented treadmill. Participants walked in overground and treadmill walking situations in different conditions, which are: opened eyes, occluded vision, closed eyes, opened eyes without visual flow from egomotion and occluded vision without this information. Outcome measures were step frequency, step width and the angles of 16 joints of all four extremities and the head. Results: Step width, step frequency and joint angles, especially of the lower extremities, are different for treadmill walking and overground walking. Differences are also found when comparing conditions within treadmill, as well as within overground walking. Walking on a treadmill is different from overground walk- ing due to the mechanics of the treadmill, but also due to different visual information that is available. When walking on the treadmill, it does not matter if the visual information is from the central visual fi�eld only, or if it is supplemented by fi�xed beacons in the peripheral �field.

Item Type: Thesis (UNSPECIFIED)
Supervisor name: Otten, prof. dr. E.
Faculty: Medical Sciences
Date Deposited: 20 Apr 2022 10:17
Last Modified: 20 Apr 2022 10:17
URI: https://umcg.studenttheses.ub.rug.nl/id/eprint/3126

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