Author
Açık, Alper, Bartel, A., König, P.
Publication Date
2014-01
Publication Place
-
Association for Research in Vision and Ophthalmology
Subject
Eye movements, Motion perception, Natural scene statistics, Visual attention
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1534-7362
Record ID
541937cf-8989-43fc-9ddc-2d1e1631ac44
Library Location
Psychology
Date
2014-01
Notes
ERC-2010-AdG ; Cognition and Neuroergonomics/Collaborative Technology Alliance grant, Seventh Framework Programme ; Cognition and Neuroergonomics/Collaborative Technology Alliance grant
Sample Text
Even though the dynamicity of our environment is a given, much of what we know on fixation selection comes from studies of static scene viewing. We performed a direct comparison of fixation selection on static and dynamic visual stimuli and investigated how far identical mechanisms drive these. We recorded eye movements while participants viewed movie clips of natural scenery and static frames taken from the same movies. Both were presented in the same high spatial resolution (1080 × 1920 pixels). The static condition allowed us to check whether local movement features computed from movies are salient even when presented as single frames. We observed that during the first second of viewing, movement and static features are equally salient in both conditions. Furthermore, predictability of fixations based on movement features decreased faster when viewing static frames as compared with viewing movie clips. Yet even during the later portion of static-frame viewing, the predictive value of movement features was still high above chance. Moreover, we demonstrated that, whereas the sets of movement and static features were statistically dependent within these sets, respectively, no dependence was observed between the two sets. Based on these results, we argue that implied motion is predictive of fixation similarly to real movement and that the onset of motion in natural stimuli is more salient than ongoing movement is. The present results allow us to address to what extent and when static image viewing is similar to the perception of a dynamic environment.
DOI
10.1167/14.1.2
Cilt
14
