PSYC 100 Chapter Notes - Chapter 6: Ciliary Muscle, Optic Nerve, Ciliary Body

• School: University of Maryland
• Department: Psychology
• Course: PSYC 100
• Professor: Ryan Curtis

Document Summary

Sensation: stimulus (sound, smell, touch, taste etc) is detected by receptors. Sensory organs (eyes, ears, nose, tongue) are designed to receive stimuli. Perception: brain receives the sensory input coming in from the body, organizes it, and interprets it. Aqueous humor: clear fluid made by the ciliary body, between the cornea and the iris, provides nutrients to the lense and the cornea. Ciliary muscle: relaxes and contracts to control the eye"s focus. Cornea: outer layer that protects the eye, focus light, the camera lense. Fovea: the densest concentration of photoreceptor cells (particularly cones) for highly detailed vision. Iris: controls how much light enters, adjust the pupil size. Lens: pulled into shapes that focus incoming light onto the receptor cells in the back of the eye(retina), accommodation: helps eye automatically focus on near objects. Optic nerve: carries electrical impulses from photoreceptor cells in the retina to the visual cortex in the brain.