The selective disruption of spatial working memory by eye movements

Area of Science:

• Cognitive Psychology
• Neuroscience
• Experimental Psychology

Background:

• Seminal studies by Baddeley and colleagues in the late 1970s/early 1980s explored eye movements' role in visual working memory.
• These foundational studies, though briefly documented, significantly influenced diverse research areas, including experimental psychology, human neuropsychology, and primate electrophysiology.

Purpose of the Study:

• To present detailed findings from three critical historical studies on eye movements and visual working memory.
• To introduce results from a new study employing advanced eye movement measurement and control techniques.
• To elucidate the precise relationship between eye movements and visuospatial working memory.

Main Methods:

• Re-analysis and detailed presentation of three historical experiments on eye movements and visual working memory.
• Conducting a new study with high-precision eye movement tracking and control.
• Utilizing delayed-recognition tasks to assess working memory for locations and shapes.

Main Results:

• Disruptive effects on working memory are linked to the control of eye movements, not the physical act of movement.
• These effects specifically impair working memory for spatial locations, with no impact on memory for visual shapes.
• The interference is localized to the storage and maintenance phases within working memory, such as the delay period.

Conclusions:

• Visuospatial working memory is highly sensitive to the control of eye movements.
• Distinctions exist between spatial and feature-based visual working memory regarding eye movement interference.
• Findings necessitate refinement of current models of visual working memory to incorporate the role of oculomotor control.