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Task-dependence in scene perception: Head unrestrained viewing using mobile eye-tracking.


ABSTRACT: Real-world scene perception is typically studied in the laboratory using static picture viewing with restrained head position. Consequently, the transfer of results obtained in this paradigm to real-word scenarios has been questioned. The advancement of mobile eye-trackers and the progress in image processing, however, permit a more natural experimental setup that, at the same time, maintains the high experimental control from the standard laboratory setting. We investigated eye movements while participants were standing in front of a projector screen and explored images under four specific task instructions. Eye movements were recorded with a mobile eye-tracking device and raw gaze data were transformed from head-centered into image-centered coordinates. We observed differences between tasks in temporal and spatial eye-movement parameters and found that the bias to fixate images near the center differed between tasks. Our results demonstrate that current mobile eye-tracking technology and a highly controlled design support the study of fine-scaled task dependencies in an experimental setting that permits more natural viewing behavior than the static picture viewing paradigm.

SUBMITTER: Backhaus D 

PROVIDER: S-EPMC7409614 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Task-dependence in scene perception: Head unrestrained viewing using mobile eye-tracking.

Backhaus Daniel D   Engbert Ralf R   Rothkegel Lars O M LOM   Trukenbrod Hans A HA  

Journal of vision 20200501 5


Real-world scene perception is typically studied in the laboratory using static picture viewing with restrained head position. Consequently, the transfer of results obtained in this paradigm to real-word scenarios has been questioned. The advancement of mobile eye-trackers and the progress in image processing, however, permit a more natural experimental setup that, at the same time, maintains the high experimental control from the standard laboratory setting. We investigated eye movements while  ...[more]

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