Sleep Is the Mate of Death

> Melancholic depressive patients report that they feel worst in the morning, just after waking up, get better as the day goes on, and feel least affected in the evening just before bed. Continue the trend, and you might wonder how depressed people would feel after spending 24 or 36 or 48 hours awake.

Perhaps melancholic depressive patients end up experiencing negative dreams while sleeping, and that makes them wake up depressed in the morning? Because if you sleep deeply you tend not to remember what you dreamed during the night?

That looks so straightforward but the author goes all in into sleep deprivation as a way to "treat" depression.