Light neural pathways

[upasanasehgal]

Thank you so much, the help students all over the world get from your videos is enormous. You are a great teacher. Thank you once again :)

[Summertimeangel]

Thank you for your efforts Dr. Campbell :) Can always depend on you for a great learning experience

[kevkonk]

I presume the optic radiations are not just four on each, but very many? Trying to keep my brain exercised by trying to understand.