Role of neuronal oscillations in memory driven visual processing
摘要
Successful working memory of previous locations is critical for optimal navigation of the environment in primates. However, it remains unclear how successful working memory influences the statistics of sensory-motor probing (e.g., whisking, sniffing, saccading). This study addresses this gap by investigating the coupling between saccadic eye movements and neural oscillations in the frontal eye field.
ResultsWe demonstrate that the influence of working memory on saccadic behaviors involves a distinct coupling to beta rhythms. Analyzing local field potentials (LFPs) and saccadic patterns in rhesus monkeys performing a visual foraging task, we find that prior memory of visual targets is followed by a significant reduction of the synchronization of saccades with beta oscillations. This reduction suggests that working memory refines saccadic strategies by dynamically modulating neural synchronization, thereby optimizing visual search efficiency.
ConclusionsOur findings elucidate a fundamental mechanism through which memory may affect sensory-motor integration, highlighting the pivotal role of neural oscillatory adjustments in enhancing the cognitive processes that govern strategic eye movements and perception.