Beaver Easy Experiment

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Description

Paralysed Finger
Confuse your Leg


Resources

None required

Instructions

The Paralysed Finger

Bend your middle finger and place the centre section on a table or hard surface. You will be able to lift your thumb, index, and little finger without moving your middle finger. But it is impossible to lift your ring finger.

What is happening?
The tendons in your fingers are independent from one another apart from the ones in your middle and ring finger. These tendons are connected, so that when your middle finger is folded down you cannot move your ring finger. It feels like your ring finger is stuck!



Confuse Your Legs

Lift your right foot a few inches from the floor and then begin to move it in a clockwise direction. While you're doing this, use a finger your right index finger to draw a number 6 in the air. Your foot will turn in an anticlockwise direction and there's nothing you can do about it!

What is happening?
The left side of your brain, which controls the right side of your body, is responsible for rhythm and timing. The left side of your brain cannot deal with operating two opposite movements at the same time and so it combines them into a single motion. Try this with your right foot and left hand and you should have no problem!


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