Posted: Feb 29, 2016 10:48 am
romansh wrote:Just a quick question on the preservation of colour experience.
Exactly by what mechanism does evolution preserve identical or even similar internal experiences of colour?
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It doesn't actually stay "identical" from the moment of birth, of course, because the cone cells are not sensitive enough at birth (being too small), and babies therefore thought to see almost in b&w in their first year or two. (Had a reference to that in an old thread, and I'll find it one day!)
EDIT: In later years, neither the photoreceptors nor their associated neural circuitry changes much, so there's not much change in perception either, barring damage due to disease or trauma (ie mechanical damage), of course.