Factors affecting gaze position lag in multiple object tracking

0433886 - PSÚ 2015 RIV RS eng A - Abstrakt
Lukavský, Jiří
Factors affecting gaze position lag in multiple object tracking.
Perception. Bělehrad: Pion, 2014. s. 26.
[37th European Conference on Visual Perception. 24.8.-28.8.2014, Bělehrad]
Grant CEP: GA ČR GA13-23940S
Institucionální podpora: RVO:68081740
Klíčová slova: eye movements * multiple object tracking * visual attention
Kód oboru RIV: AN - Psychologie
http://www.perceptionweb.com/abstract.cgi?id=v1411705

Previously, it has been shown the gaze position during Multiple Object Tracking is systematically lagging behind the scene content by approx. 100 ms. We ran additional experiments to investigate how the cognitive workload and predictability of objects’ movements affect the lag time. In Experiment 1 we manipulated the number of tracked objects (2 or 4). In Experiments 2a and 2b we manipulated the predictability of movements on the screen by adjusting the parameters of von Mises distribution from which the objects’ directions were sampled. All experiments confirmed the presence of gaze position lag of 100 ms when tracking 4 targets with speed 5 deg/s. We found a significant increase of lag in less predictable movements (by +33 ms). The observed changes in gaze position lag for lower cognitive workload (-14 ms) or more predictable movements (-19 ms) were not significant.
Trvalý link: http://hdl.handle.net/11104/0238056