Brain cells called astrocytes help to cause the urge to sleep that comes with prolonged wakefulness, according to a new study in mice. The cells release adenosine, a chemical known to have sleep-inducing effects that are inhibited by caffeine.
Brain cells called astrocytes help to cause the urge to sleep that comes with prolonged wakefulness, according to a new study in mice. The cells release adenosine, a chemical known to have sleep-inducing effects that are inhibited by caffeine.
