Feb, 26 Dis - • Retina Light-sensitive inner surface of...

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Psychology Discussion February 26, 2008 Sensation - Process by which our sensory receptors and nervous system receive and represent stimuli from our environment Perception - Process of organizing and interpreting senor information; enables recognition of meaningful objects and events Proximal and Distal Stimuli Proximal stimuli - Input to the sense organs Distal stimuli - How objects actually are Structure of the Eye Cornea – Transparent outer portion of the eyeball; covers iris and pupil Pupil - Adjustable opening in the center of the eye Iris - Ring of muscle that forms the colored portion of the eye; controls the size of the pupil opening Lens - transparent structure behind pupil; changes shape to focus images on the retina
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Unformatted text preview: • Retina- Light-sensitive inner surface of the eye; containing receptor rods and cones; and layers of neurons • Optic Nerve- Carries neural impulses from the eye to the brain • Blind Spot- Point at which the optic nerve leaves the eye; no receptor cells located there • Fovea- Central point in the retina, around which the eye’s cones cluster Vision Receptors Rods and Cones – Specialized neurons that take sensory information and convert it into neural information Cones Rods Number 8 Million 120 Million Located in Retina Center Periphery Sensitivity in dim light Low High Color Sensitive Yes No...
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Feb, 26 Dis - • Retina Light-sensitive inner surface of...

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