Eye movements in extended tasks: Analyses of ambient/focal attention with coefficient K

Research output: Contribution to journalConference articleContributedpeer-review


Patterns of scene exploration can be characterized by two modes of processing: an ambient mode, serving global spatial orientation in the visual environment, followed by a focal mode, facilitating a more elaborated and object-centered analysis. Previous studies suggest that shifts in these processing modes can also be identified in relation to changes in dynamic environments based on eye movement parameters. For the analysis of these changes in eye movement behavior, the coefficient K has been suggested. Here, we used a multi-step task, in which participants needed to perform a series of sub-tasks, to investigate whether shifts in ambient/focal attention can also be identified in complex task solving. While differences in eye movements and in the coefficient K were observed when switching between sub-tasks, the overall temporal dynamics in visual attention remained stable.


Original languageEnglish
Pages (from-to)13:1-13:7
Number of pages7
JournalE Eye Tracking Research and Applications : Proceedings of the ... Symposium on Eye-Tracking Research & Applications
Publication statusPublished - 8 Jun 2022


Title2022 ACM Symposium on Eye Tracking Research and Applications, ETRA 2022
Duration8 - 11 June 2022
CityVirtual, Online
CountryUnited States of America

External IDs

dblp conf/etra/GuoPH22
ORCID /0000-0002-6673-9591/work/142242368



  • ambient attention, coefficient K, fixation duration, focal attention, saccade amplitude, task processing