Mouse Brain Blood Flow Waves: Predictions and Implications

A recent study funded by the NIH has uncovered a fascinating phenomenon in the mouse brain's blood flow. Researchers have discovered rhythmic waves of blood vessels expanding and contracting across the brain's surface, independent of brain activity. These waves, occurring approximately every ten seconds, play a crucial role in mixing fluids around brain cells, potentially aiding in the removal of waste products and other materials. This process could have significant implications for neurological disorders such as Alzheimer's disease. Moreover, the study suggests that these blood flow waves may complicate the interpretation of fMRI scans, challenging current approaches to understanding brain activation.