Term
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Definition
| Making sense out of sensation |
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Term
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Definition
| Height & depth of wave (brightness & loudness) |
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Term
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Definition
| Crest to crest (color & pitch) |
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Term
| As you get older, which do you lose first? Shorter wavelength or longer wavelength colors? |
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Definition
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Term
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Definition
| Converting energy. Turning light waves into electricity. Physical energy into neural energy. |
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Term
| If you are born blind, more areas of your brain are devoted to____, ____, & ____. If you are made blind at an early age, your _____ ______ are significantly decreased. |
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Definition
Sound, touch, & other senses.
Language skills. |
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Term
| The first place light hits is the... |
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Definition
| Cornea. Your cornea is bending light rays. |
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Term
| After light goes through the cornea, it comes to the chamber called the... |
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Definition
| Aqueous Humor. This nourishes your cornea & cycles about every 4 hrs. |
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Term
| Pressure built up in the eyeball results in... |
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Definition
| Glaucoma. Kills cells in the peripheral vision. African Americans are more likely to get it. |
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Term
| Glaucoma has 2 basic types: ___ ___ (most common) & ___ ____ (exit shut off). |
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Definition
| Open angle & closed angle. First treatment is usually eye drops.. which keep the exit open. |
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Term
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Definition
| Iris. Anything beyond brown is less pigment. As you get older, your iris doesn't retract as well, pupil doesn't open as well, & you have difficulty seeing in dim light. |
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Term
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Definition
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Term
| When looking at something far away your lens becomes ____. When looking at something close up, it will become ____. |
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Definition
| Flatter; rounder. (Accommodation) |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Cataracts. 75% of people by age 65 have cataracts. |
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Term
| When lights comes through the lens it is ____. It then passes through the chamber filled w/ _____ ______. |
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Definition
| Reversed; Vitreous humor (helps keep eyeball round). |
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Term
| Light striking cells causes____. |
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Definition
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Term
| 2 main types of photoreceptors: |
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Definition
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Term
| Are rods connected w/ scotopic vision or photopic vision? |
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Definition
| Scotopic vision (black & white). |
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Term
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Definition
| About 120 million. For scotopic vision (black & white). Every rod contains a little chemical. When light hits that chemical, it splits in 2: a form of vitamin A & a protein called opsin. This causes depolarization. |
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Term
| When light hits the chemical in rods, what 2 things does it split into? |
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Definition
| A form of vitamin A & a protein called opsin. (This causes depolarization) |
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Term
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Definition
| Vision under brighter illumination. Discern color. 3 types: long wavelength, medium wavelength, & short wavelength. (Some women have 4 & can discern color better) |
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