See What Happens When You Tickle a Rat | National Geographic

What frequency do rats use for vocalizations when they are happy or excited?

• 22 kHz

• 50 kHz

• 100 kHz

• 20 Hz

How do rats show that they enjoy being tickled?

• They run away from the hand.

• They make long calls at 22 kHz.

• They approach the hand to be tickled more.

• They stop vocalizing completely.

What is the main function of the somatosensory cortex in the brain?

• Controlling muscle movement.

• Processing visual information.

• Receiving signals for touch, pain, temperature, and pressure.

• Regulating heart rate and breathing.

What happened when researchers electrically stimulated the neurons in the somatosensory cortex of a rat?

• The rat became scared and made 22 kHz calls.

• The rat stopped moving and became unresponsive.

• The rat emitted short calls at 50 kHz, similar to when it's happy.

• The rat's body temperature increased significantly.