Human Machine Mystery #4

Why does it look like there's a hole in your hand during the hole-in-hand illusion?

• Your brain isn't working properly.

• Your hand actually has a hole in it.

• Your brain is seeing two things and combining the images.

Tags

NGSS.MS-LS1-8

What do the sensory nerves do?

• They send messages from your brain to your senses.

• They send messages to tell your body to move.

• They control your muscles.

• They control your bones.

Tags

NGSS.MS-LS1-8

What do the movement nerves do?

• They send messages from your brain to your senses.

• They send messages from your brain to your muscles.

• They send messages from your brain to your bones.

• They send messages to your eyes.

Answer #1.

• The eyes see the ruler falling.

• The eyes see your hand.

• The eyes see your arm moving.

Tags

NGSS.MS-LS1-8

Answer #2.

• The eyes close.

• The eyes look down at the floor, so they can see the ruler drop.

• The eyes send a message to the brain that the ruler is being dropped.

Tags

NGSS.MS-LS1-8

Answer #3. What does the brain do first?

• The brain makes the decision to grab the ruler.

• The brain sends messages to the whole body.

• The brain sends the message back to the eyes.

Tags

NGSS.MS-LS1-8

Answer #4. What does the brain do next?

• The brain makes a decision.

• The brain sends a message to the movement nerves to grab the ruler.

• The brain tells the eyes to close.

Tags

NGSS.MS-LS1-8