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| Image credit: kars4kids.com |
Everyone get tickled somewhere. But why do we laugh after get tickled? Why do we get tickled? Why we can't tickle ourself? Keep reading to know the answer...
When your touched or tickled by someone, the nerve endings under the top layer of your skin (epidermis), send electrical signals to the brain. When we are tickled the somatosensory cortex picks up the signals to do with pressure, but the anterior cingulated cortex also analysis the signals.
This part of the brain gives pleasurable feelings.
Evolutionary biologists and neuroscientists believe that hypothalamus is the part that forces us to laugh after get tickled when we experience a light touch, this is the same part that tells us to expect a painful sensation. We get tickled on our sensitive spots such as under the arms, near the throat, under our feet, etc.
So why we can't tickle ourselves? The cerebellum at the back of our brain tells us that you are going to self-tickle, so the doesn't waste it's precious time and energy interpreting the signals from the tickle.
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