Psych 330 Vision
Terms
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- What are the 2 dimensions of color?
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1. Hue- dominant wavelength, "color"
2. Brightness- intensity, dark- light - Sclera
- Forms "white eyeball"
- Iris
- Colored opens/ closes to let light through a hole, the pupil
- Lens
- Focuses Light
- Retina
- Light energy initiates neural activity
- Fovea
- At the center of the retina, region of sharpest vision and has the densest distribution of photoreceptors specialized for color
- Blind Spot/ Optic Disk
- where blood vessels enter the eye/ optic nerve- exit the eye
- Characteristics of the retina
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Light sensitive surface
Back of the eye
Contains modified neurons - Cones
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Coned/ rounded outer segment
Responsive to bright light
Mainly for day vision
- Rods
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Cylindracal outer segment
Responsive for wide range of color
Mainly for night vision -
Retinal Ganglion Cells
Which kind are related to cones? -
Give rise to optic nerve
P-Cells are sensitive to color - Amacrine Cells
- Link bipolar cells with RGC