Psychology / Unit 4 Psych 0402 short lesson, about 20 seconds
Rods
Captions available
The idea
Rods are retinal receptors that respond to low light levels and do not encode color.
In practice
In a dark room, shapes and movement are visible while colors are not.
Where people slip
Rods dominate peripheral vision. A dim star is often easier to see by looking slightly away from it.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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