Effects Upon The Brain
The longer the brain has been awake, the greater thing the spontaneous firing rates of cerebral cortex neurons with this increase being reversed by sleep. Another effect of wakefulness (which may or may not be related to this) is that it lowers the small stores of glycogen held in the astrocytes that can supply energy to the brain's neurons—one of the functions of sleep it has been proposed is to create the opportunity for them to be replenished.
Read more about this topic: Wakefulness
Famous quotes containing the words effects and/or brain:
“Oh that my Pow’r to Saving were confin’d:
Why am I forc’d, like Heav’n, against my mind,
To make Examples of another Kind?
Must I at length the Sword of Justice draw?
Oh curst Effects of necessary Law!
How ill my Fear they by my Mercy scan,
Beware the Fury of a Patient Man.”
—John Dryden (1631–1700)
“One of the most singular facts about the unwritten history of this country is the consummate ability with which Southern influence, Southern ideas and Southern ideals, have from the very beginning even up to the present day, dictated to and domineered over the brain and sinew of this nation.”
—Anna Julia Cooper (1859–1964)