Exercise triggers memory ripples in human brain
Mar 10th 2026
Using intracranial EEG in 14 patients, researchers report that one bout of cycling rapidly boosts hippocampal ripples and hippocampal-cortical interactions tied to learning and memory.
- A University of Iowa-led team recorded brain activity with implanted electrodes in 14 epilepsy patients and found a single 20-minute cycling session increased high-frequency hippocampal ripples.
- Ripples rose in rate and propagated from the hippocampus to cortical areas involved in learning and memory.
- This is the first direct human evidence linking exercise to ripple activity previously documented in rodents and theorized in humans from indirect imaging studies.
- Authors say the patterns match noninvasive imaging results and likely reflect a general human response not limited to epilepsy patients.
- The study was published March 9 in Brain Communications and the researchers plan follow-up work to test memory performance while recording brain activity.