To see whether massaging these vessels could boost CSF flow, the researchers built a device with a small rod attached to a 1-centimetre-wide cotton ball.

Nahrendorf intends to investigate the consequences of the new outbound CSF flow in diseases such as dementia and identify pathways that could be therapeutically modulated.

The brain's cerebrospinal fluid (CSF) pulses during deep sleep and this appears to be tied to brain wave activity and blood flow, an exploratory study showed. Large oscillations of CSF inflow to ...