Losing your inner monologue

Your inner monologue is where you tell yourself, "I don't want to get up yet," or "This is a tasty burger."

Aphasia from Ancient Greek means "without speech." Typically aphasia occurs after a stroke. Reduced blood flow or bleeding causes brain cells to start dying, but the neural transmitters signal the brain's neurons to keep firing, even as they starve from lack of oxygen. Any brain cells killed during this time can't come back.