Eye-Tracking Metrics and Visuospatial Task Complexity: A Comparative Analysis

Visuospatial tasks involve varied eye behaviors such as rapid visual search, fixations, and pupil adjustments. Understanding how eye-tracking metrics change during visuospatial tasks of varying complexity provides valuable insights into cognitive processes related to task complexity. This study explores the differences in eye-tracking metrics between simple and complex visuospatial tasks. This study was conducted in a controlled laboratory setting with a cohort of 20 university students who built two Lego models as simple and complex tasks. The analysis included eye-tracking metrics, such as saccades and fixations, pupil diameter, and blink rate. The findings indicated that the simple task resulted in a significantly longer fixation duration and larger pupil diameter, with a declining trend compared to the complex task. However, the blink duration and blink rate per minute showed no significant differences between the two tasks. These results suggest that eye-tracking metrics effectively capture visual behavioral differences associated with visuospatial task complexity.