Task-Dependent Visual Behavior in Immersive Environments: A Comparative Study of Free Exploration, Memory and Visual...

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human-Computer Interaction

Background:

• Visual behavior is governed by bottom-up (stimulus-driven) and top-down (goal-driven) mechanisms.
• Existing visual attention models often overemphasize bottom-up processes.
• Previous studies on cognitive tasks' effects on vision lack standardization, hindering comparisons.

Purpose of the Study:

• To systematically investigate how different cognitive tasks impact visual behavior.
• To provide a standardized within-subjects comparison of visual exploration, memory, and visual search tasks.
• To offer insights for designing effective task-oriented immersive applications.

Main Methods:

• A within-subjects design was employed.
• Participants engaged in free exploration, memory, and visual search tasks across three distinct scenes.
• Eye and head movements were meticulously recorded during task performance.

Main Results:

• Significant and consistent differences were observed in fixation and saccade distributions across tasks.
• Head movement patterns also varied significantly depending on the cognitive task.
• Task-specific variations in visual behavior were robustly identified.

Conclusions:

• Cognitive task demands profoundly shape visual behavior, affecting gaze and head movements.
• Findings highlight the importance of considering task-specific visual strategies.
• The results offer valuable guidance for optimizing immersive application design for specific user goals.