The knowledge of the visual strategies adopted while walking in cognitively engaging environments is extremely valuable. Analyzing gaze when a treadmill and a virtual reality environment are used as motor rehabilitation tools is therefore critical. Being completely unobtrusive, remote eye-trackers are the most appropriate way to measure the point of gaze. Still, the point of gaze measurements are affected by experimental conditions such as head range of motion and visual stimuli. This study assesses the usability limits and measurement reliability of a remote eye-tracker during treadmill walking while visual stimuli are projected. During treadmill walking, the head remained within the remote eye-tracker workspace. Generally, the quality of the point of gaze measurements declined as the distance from the remote eye-tracker increased and data loss occurred for large gaze angles. The stimulus location (a dot-target) did not influence the point of gaze accuracy, precision, and trackability during both standing and walking. Similar results were obtained when the dot-target was replaced by a static or moving 2D target and "region of interest" analysis was applied. These findings foster the feasibility of the use of a remote eye-tracker for the analysis of gaze during treadmill walking in virtual reality environments.


    Access

    Download


    Export, share and cite



    Title :

    Use of a remote eye-tracker for the analysis of gaze during treadmill walking and visual stimuli exposition



    Publication date :

    2016-01-01



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Visual Acuity During Treadmill Walking

    Peters, B. T. / Brady, R. / vanEmmerik, R. E. A. et al. | NTRS | 2006


    Gaze direction affects walking speed when using a self-paced treadmill with a virtual reality environment

    Jeschke, A.M. / Groot, L.E. de / Woude, L.H.V. van der et al. | BASE | 2019

    Free access


    Self-paced versus fixed speed treadmill walking

    Sloot, L.H. / van der Krogt, M.M. / Harlaar, J. | BASE | 2014

    Free access