>To respond a little - I was trying to use "innately get depressed when not exposed to sunlight" as an example of something well researched showing that light affects people physically in ways that are not just 'seeing shape and contrast'
It could not be light as such though. It could be warmth from the sun that makes people depressed when not exposed to sunlight, or vitamin deficiency (some vitamins need sunlight to be usable).
It could not be light as such though. It could be warmth from the sun that makes people depressed when not exposed to sunlight, or vitamin deficiency (some vitamins need sunlight to be usable).