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Why do humans laugh when tickled?

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Getreal

Lvl 1
8y ago
Updated: 8/18/2019

The tickling response seems to be complex. The type of tickling response that brings laughter is different from the tickling sensation that is related to itching.

There are two types of phenomena at work here. One is knismesis, which is a "moving itch" sensation. Most mammals and a lot of other animals have this. You can invoke this in yourself.

The other phenomenon is called gargalesis. That is a harder type of tickling and which seems to generate laughter. It seems to be present only in humans, other primates, and perhaps rodents. This type of response seems to require another person. If you tickle yourself roughly in the sensitive areas, you will likely not feel much of anything.

The tickle sensation seems to involve both the pain and touch receptors, and endorphin is released. But a certain amount of it may be a nervous reaction or a placebo effect, since the most "ticklish" of people tend to laugh or pull back before being tickled.

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Wiki User

8y ago

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