How does brain measure light received by retina, to send the signal to increase or decrease the size of pupil?
In: Biology
I hope this helps.. the optic pathway gets a little jumbled with names, but in general:
Special cells on our eyes called rods and cones receive light, communicates it to the brain via the optic tract and nerves. From that point it gets processed via our cranial nerves and travels to a special nucleus called “edinger westphal”, which computes that information and tells our iris sphincter muscles to contract/relax in response to change pupil size
Latest Answers