Tsukuba, Japan – Scientists have long wondered why almost all animals sleep, despite the disadvantages to survival of being unconscious. Now, researchers led by a team from the University of Tsukuba ...

Researchers looked at blood flow in brain capillaries between sleep phases The brain capillaries are where waste products and nutrients are exchanged They found evidence of increased blood flow in the ...

Microglia are the silent guardians of the brain. They hunt down pathogens, clean up toxic protein clumps, and even shape the brain’s wiring. They’re also robust. Neurons can’t divide to generate new ...