Memory & arousal system
Hippocampus: why you forget things when you're stressed
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You reread the same page without it sinking in, or forget a name seconds after hearing it, especially under pressure. This page covers what the hippocampus does for memory and learning, what strengthens it, what weakens it, and three sourced exercises.
Memory and learning.
- Lights up with
- learning · repetition · quality sleep
- Quiets with
- chronic stress · lack of sleep
- When it is strained
- forgetfulness · difficulty consolidating new knowledge
Train it
Spaced repetition
spaced sessionsReview at increasing intervals rather than cramming.
Source The spacing effect (Ebbinghaus) improves hippocampal memory consolidation compared to cramming.
7–9h of sleep
7–9h/nightProtect sufficient, regular sleep.
Source Sleep, especially deep phases, consolidates memory; chronic stress and sleep deprivation impair the hippocampus (research on cortisol and neurogenesis).
Physical activity
regularRegular aerobic exercise.
Source Aerobic exercise is associated with increased hippocampal volume and BDNF (Erickson et al., 2011).
Related regions
Hypothalamus · Locus coeruleus · Mammillary bodies · Septal nuclei · Lateral habenula
This page is the general mechanism, the same for everyone. Elevate estimates which of your own regions are active from what you write.
Create my account to see my active regionsEducational self-understanding tool: not medical advice, not a diagnosis.