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Choose an Episode
The Baby's Brain
The Child's Brain
The Teenage Brain
The Adult Brain
The Aging Brain
A combination spiral is made up of two spirals with lines going in opposite directions. When this combination spiral is rotated, apparent expansion and contraction occur.
Try this: Stare at this spiral for 30 seconds and then look at a stationary object. The afteraffects in the stationary object are opposite to the spiral.
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