Tracking and discrete dual task performance for different visual spatial stimulus-response mappings with focal and ambient vision

摘要

AbstractThe effect of spatial compatibility for various display-control configurations on human performance was studied with a dual-task paradigm using a tracking task and a discrete response task. Degradation of performance on both tasks within the visual modality was observed and was considered to be most likely due to resource competition resulting from simultaneous task operation. It was found that the more complicated the mapping for the discrete spatial compatibility response task, the more severe the interference with the tracking task. Although performance on both the tracking and spatial response tasks was impaired, the magnitude of impairment was not as great as expected, implying that focal and ambient vision required for the tracking task and spatial task, respectively, might be deployed, at least partly, from separate resources. Participants here seemed to successfully use focal vision for tracking and ambient vision for identifying signal lights concurrently, reducing the expected keen competition for visual resources.Highlights?Competition for visual resources can be reduced by concurrent use of focal and ambient vision for dual-task processing.?Unimanual two-finger responses may not benefit from the right-left prevalence effect as it would for two-hand responses.?Displays and controls with high level of spatial compatibility can reduce resource competition in a dual task paradigm.]]>