Edward Willett

Archives

To sleep, perchance to dream

[podcast]http://edwardwillett.com/wp-content/upLoads//2009/11/Dreaming.mp3[/podcast] Why do we dream? You’d think we’d know by now. Everyone dreams, and people have been fascinated by dreams throughout recorded history. But scientifically, their origin and importance remain uncertain. Do they serve some vital psychological or physiological function? Or are they just meaningless accidents of our brain’s wiring? A few years ago, Finnish psychologist Antti Revonsuo theorized that dreams evolved as a way to rehearse threatening situations. Silvio Scarone of the Universita degli Studi de Milano in Milan, Italy, explains it this way: “The environment in which the human brain evolved included frequent dangerous events that posed threats to human reproduction. These would have been a serious selection pressure on ancestral human populations and would have fully activated ...

Posted by Edward Willett at 14:34, November 12th, 2009 under Blog, Columns, Science Columns | Comment now »