PSY E111 Lecture 19: Psy E111 - Class 19 (Fall)
Document Summary
Light is captured and focused through the cornea, lens and pupils onto the retina. In the retina, light waves are changed into neural signals. Light first enters the eye through the cornea, which helps focus it. The muscles of the iris cause the pupil to dilate or constrict in response to light intensity or emotional factors. The lens focuses the incoming light onto the retina. Receptors for vision (rods and cones) are located in the retina. The fovea, a pit filled with cones, is responsible for our sharpest vision. The blind spot, near the fovea, has no visual receptors. Fovea: center most point of the retina the eye. There are 3 types of cones: green, blue and red. As you move to the periphery, there are less cones and more rods. Cones don"t work in the dark, only work in the light. Responsible for detailed division good at picking up fine details. Ciliary muscles: contains only cons and no rods.
