In a study, titled "Locus coeruleus norepinephrine selectively controls ... "Now we have found a brain structure that has strong signals related to whether the subjects are paying attention ...

Epinephrine (also called adrenaline) and norepinephrine (also called noradrenaline) have a lot in common. Both are hormones that travel through your body, affecting many tissues and organs.

Microglia are very dynamic and constantly extending and retracting processes to explore and monitor the brain. In this image from the new University of Rochester study, white shows the microglial cell ...