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Features of eye movements during the examination of a dynamic virtual environment 1203
, Junior Research Associate, A. B. Kogan Institute of Neurocybernetics, Southern Federal University, Rostov-on-Don, Russia, email@example.comPetrushan M.V.
, Junior Research Associate, A. B. Kogan Institute of Neurocybernetics, Southern Federal University, Rostov-on-Don, RussiaSamarin A.V.
, Senior Research Associate, A. B. Kogan Institute of Neurocybernetics, Southern Federal University, Rostov-on-Don, Russia
The differences between trajectories of eye movements during navigation in a 3D virtual environment projected on a screen, and during 2D image viewing are considered in this paper. Two types of the tasks had been used in navigation tests. In the first one subject was navigate in a 3D virtual environment by pressing buttons. In the second the subject watched the environment during imposed motion of the virtual space. Differences between proportions of the fixations and smooth pursuits have been found: in the first type (active control) proportion of smooth pursuits was significantly larger than in the second type (passive control) – 67% and 55%, correspondingly. On the other hand, saccade amplitude, velocity and duration of fixation were similar in navigation tests. Typical patterns linked with camera rotation were revealed. In particular they were different in active and passive navigation tests: in active type, these patterns preceded the rotation, and in second type followed it. Also the movement’s properties (fixation duration, spatial distribution of fixation on the image, peak speed and saccade amplitude) were different. Differences of eye movement properties (fixation duration, spatial distribution of fixation on the image, peak speed and saccade amplitude) were found in comparison of navigation tests and 2 D image viewing tests.
Keywords: visual perception, navigation, virtual 3D environment, smooth pursuit, fixations, saccades
Column: Psychology of Perception
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