Balancing energetic and cognitive resources: memory use during search depends on the orienting effector

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Factors Engineering

Background:

• Laboratory search studies often simplify real-world search complexities.
• Understanding how memory guides attention during visual search is crucial.
• Prior research suggests memory use increases with perceptual search difficulty.

Purpose of the Study:

• To investigate the role of memory in guiding attention during search under varying energetic costs.
• To compare memory utilization in head-contingent versus eye-contingent search paradigms.
• To extend theories of memory use in search by incorporating embodied factors.

Main Methods:

• Employed optical motion tracking to monitor search behavior.
• Developed a novel head-contingent display system for direct comparison of search strategies.
• Analyzed search timing and orienting metrics to quantify memory use.

Main Results:

• Significantly greater memory use was observed in head-contingent search compared to eye-contingent search.
• This difference in memory utilization correlated with the increased energetic cost associated with head movements.
• Both timing and orienting metrics reflected enhanced memory-guided search when using head movements.

Conclusions:

• The energetic cost of motor actions influences the degree to which memory guides attention during search.
• Embodied factors, such as the motor systems employed, are critical considerations in cognitive search theories.
• Future research should account for the specific costs and constraints of motor groups in task evaluation.