Literature review reveals divergent effects of stress on conditioning versus spatial memory, indicating that glucocorticoids across brain circuits govern cognitive outcomes.
Key Points
Synthesize existing literature across five distinct classifying factors to establish an integrative model explaining how stress modulates memory processes and identify underlying neurobiological mechanisms.
Narrative synthesis of behavioral and neurobiological literature on stress-memory interactions.
Evaluation of memory outcomes across five parameters: stressor source, duration, intensity, timing relative to memory phase, and learning type.
High stress levels facilitate Pavlovian conditioning in a linear-asymptotic manner while impairing spatial and explicit information processing via an inverted U-shaped dynamic for intrinsic stress.
Glucocorticoid signaling acts as a shared biological mediator for both facilitating and impairing memory effects.
Modulatory effects are primarily mediated across the hippocampus, amygdala, and prefrontal cortex.