Scientists discover a hydraulic link between the abdomen and the brain
PsyPost • • health
Key Points:
- A study published in Nature Neuroscience reveals that abdominal muscle contractions compress blood vessels connected to the spine and brain, causing gentle brain movement within the skull that may help wash away cellular waste.
- Researchers used two-photon microscopy on awake mice to observe brain shifts linked to abdominal muscle activity, suggesting that core muscle contractions act like a hydraulic pump pushing blood and fluid through the spinal column.
- Computational modeling showed that this brain movement drives fluid flow, helping to clear waste products from brain tissue, complementing waste clearance that occurs during sleep.
- The study highlights a specialized vein network, the vertebral venous plexus, connecting the abdomen to the spine, which transmits pressure changes from abdominal contractions to the brain.
- While the findings suggest exercise-induced motion benefits brain health by promoting fluid circulation and waste removal, limitations include the use of restrained mice and simplified brain models, necessitating further research in humans.
