Physical exercise is widely known to improve cognitive function and memory, but the underlying neural mechanisms remain incompletely understood. In particular, hippocampal sharp-wave ripples—the key neurophysiological markers of memory processing—are thought to play a central role in learning and memory consolidation.
Recent evidence suggests that interactions between the hippocampus and cortical networks, especially the default mode and limbic systems, are critical for cognitive performance. However, whether acute exercise can modulate these neural dynamics in humans has not been clearly established.
A recent study demonstrated that a single session of light-to-moderate intensity exercise significantly enhances hippocampal ripple activity and its coupling with cortical networks. These findings provide direct neurophysiological evidence linking exercise to improved brain connectivity and memory-related processes (see Graphic).
(Source: Cardenas AR, Ramirez-VillegasJF, Kovach CK, Gander PE, Cole RC, Grossbach AJ, Kawasaki H, Greenlee JDW, Howard MA, Nourski KV, Banks MI, Voss MW. Exercise enhances hippocampal-cortical ripple interactions in the human brain, Brain Communications, 2026;8(2): fcag041. https://doi.org/10.1093/braincomms/fcag041)