The intersection between the oculomotor and hippocampal memory systems: empirical developments and clinical...

Area of Science:

• Cognitive Neuroscience
• Neurobiology
• Systems Neuroscience

Background:

• Extensive research links visual attention (where we look) to memory processes.
• The oculomotor system controls eye movements, while the hippocampal system is crucial for memory.
• A reciprocal relationship between these systems is increasingly recognized.

Purpose of the Study:

• To review evidence for the moment-to-moment interaction between oculomotor and hippocampal systems.
• To explore how visual exploration and memory influence each other.
• To propose implications for computational models and clinical applications.

Main Methods:

• Review of findings from human and nonhuman animal studies.
• Inclusion of behavioral, neuropsychological, neuroimaging, and computational modeling approaches.
• Analysis of the structural and functional network mediating the interaction.

Main Results:

• Visual exploration efficiently gathers environmental information for memory encoding, updating, and retrieval.
• Memory enhances the efficiency of visual exploration.
• A complex network mediates the reciprocal interaction between eye movements and memory.

Conclusions:

• Models of oculomotor control should incorporate hippocampal influence on eye movement cognition.
• Models of hippocampal function should consider the oculomotor system's role in memory.
• Eye movement analysis offers potential for detecting neurodegeneration and guiding mental health therapies.