NEUR 2500 Lecture Notes - Lecture 9: Aqueous Humour, Optic Nerve, Color Vision
Document Summary
The adjustable opening in the center of the eye through which light enters. Iris muscular diaphragm that controls the size of the pupil; colored part of eye. Cornea transparent external surface of the eye, doesn"t have blood vessels, is nourished by aqueous humor. Sclera the white part of the eye; contains extraoccular muscles to move the eyeball. Membrane that folds back from the inside of the eyelids. For far-sighted vision, refraction depends on curvature of cornea. Focus closer things, because light rays no longer enter parallel. Visual acuity ability of eye to distinguish nearby points. Direct pathway of visual transduction photoreceptros-->bipolar cells-->ganglion cells fire aps. Receive input from photoreceptors and project laterally to influence bipolar cells. Amacrine cells receive input from bipolar cells and project laterally to influence ganglion cells, and other bipolar and amacrine cells. Only light sensitive cells in the retina photoreceptors.
