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Investigating the Dynamic Relationship Between Anxiety and Spatial Memory Using Autonomous Ecological Momentary

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This study introduces a new method to track anxiety and spatial memory in epilepsy patients. Momentary anxiety influenced response speed but not accuracy, revealing adaptive strategies rather than memory deficits.

Area of Science:

Neuroscience
Psychology
Clinical Research

Background:

Anxiety's impact on memory is well-researched, but its real-time effects on spatial episodic memory in clinical settings are less understood.
Epilepsy patients often experience anxiety, which may affect cognitive functions like spatial memory.

Purpose of the Study:

To develop and validate an ecological momentary assessment (EMA) protocol for measuring dynamic anxiety-spatial memory associations.
To investigate how momentary anxiety levels influence spatial memory performance and retrieval speed in epilepsy patients.

Main Methods:

Developed and deployed an anxiety-spatial-memory EMA (asm-EMA) protocol in 30 epilepsy patients during inpatient EEG monitoring.
Administered pseudo-randomized momentary anxiety ratings and spatial memory tasks every 90-150 minutes over multiple days.

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Correlated subject-level asm-EMA data with standard neuropsychological assessments.

Main Results:

Subject-level asm-EMA metrics showed significant correlations with standard neuropsychological assessments, confirming clinical validity.
Elevated anxiety (STAI-6) was linked to faster retrieval times but did not impair spatial memory accuracy.
Anxiety exhibited short-term carryover effects between consecutive sessions, with minimal persistence beyond the next session.

Conclusions:

The asm-EMA protocol is a feasible and autonomous method for capturing real-time anxiety-memory dynamics in naturalistic clinical environments.
Findings suggest anxiety may alter response strategies (speed) rather than impairing spatial memory accuracy in this population.
This approach offers a valuable framework for future research on anxiety-memory interactions in neurological conditions.