Working memory in action: inspecting the systematic and unsystematic errors of spatial memory across saccades

Area of Science:

• Cognitive Neuroscience
• Psychology
• Neuroscience

Background:

• Working memory is crucial for daily tasks, often involving eye movements (saccades).
• Existing research primarily studies working memory without saccades, limiting understanding of transsaccadic memory.
• Saccades disrupt perception and attention, potentially necessitating specialized transsaccadic memory systems.

Purpose of the Study:

• To compare working memory systems within and across saccades.
• To investigate the influence of memory load on spatial errors during transsaccadic tasks.
• To determine if transsaccadic error measures predict performance in established working memory paradigms.

Main Methods:

• Devised transsaccadic memory tasks evaluating systematic and unsystematic spatial errors.
• Used a line intersection task and a 2-back task (Experiment 1).
• Employed pointing tasks and tested change detection and 2-back performance (Experiments 2-3).

Main Results:

• Unsystematic transsaccadic errors increased with memory load and correlated with 2-back performance.
• Systematic errors showed similar trends, influenced by array geometry.
• Transsaccadic errors did not predict change detection performance.

Conclusions:

• Working memory systems within and across saccades likely share neural resources.
• Transsaccadic spatial error measures offer insights into working memory function.
• Further research on working memory across saccades is essential for a complete understanding.