If you find it hard to focus after a wakeful night, it’s because your brain is busy trying to catch up on crucial housekeeping.

The space between the arachnoid and pia meningeal layers encasing the brain is a landscape of connective tissue, blood vessels, and cerebrospinal fluid. Scientists debate how that fluid moves within ...

Cerebrospinal fluid (CSF) is a clear and watery liquid that flows in and around the brain and spinal cord. Its functions include protecting parts of the nervous system, delivering nutrients and ...

A new breakthrough study from the Rotman Research Institute at Baycrest, University of Toronto (Motsenyat et al., Brain Stimulation 2025) shows that brief sessions of pulsed photobiomodulation (PBM) ...

Pulsatile CSF flow dynamics increase during epochs with slower reaction times and attentional failures. (CREDIT: Nature) By 10 a.m., having had no sleep, subjects were lying in MRI scanners engaging ...

Nearly everyone has experienced it: After a night of poor sleep, you don't feel as alert as you should. Your brain might seem foggy, and your mind drifts off when you should be paying attention.

When you’re short on sleep and your focus suddenly drifts, your brain may be briefly slipping into cleanup mode. Scientists ...