Visual Dynamics When Interrupting a Control Task to Search for a Peripheral Target.

摘要

The dynamic patterns of eye and head movements were measured when the subject interrupted a manual control task to visually process a peripheral, digital target. The initial pattern of movement differs both quantitatively and qualitatively from that reported in 'classic' studies without the competing, central, ongoing task. A compensatory eye/head movement period was observed wherein the head began movement toward the target while fixation remained on the control task display. The initial saccadic eye movement was delayed approximately 300 msec over the classic paradigm. Control order (plant dynamics) and control signal bandwidth have effects on this pattern as does the status of control at the time search is commanded.