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Transducing Light: Visual Perception

"When you look at a bright red tulip...." (224).

"Light travels in waves, and the shape of those waves influences what we see" (224).

TITLE

PICTURES

Information Processing

130 million "buried receptor cells, the rods and cones" (226).

Terms

Optic Nerve: carries neural impulses to the brain.

Rods: detect black, white, gray and movement

Cones: fine detail and color

"If no one sees the tomato, is it red?" (228)

1) The tomato rejects (reflects) the long wavelengths of red

2) Color is "constructed" in our brains

Feature Detection

"...specialized neurons, now known as feature detectors, receive information...." (230).

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