Giggling Rats Provide Insights Into Why Humans Are Ticklish

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Photo Credit: Shimpei Ishiyama and Michael Brecht/Science

For many of us, the mere thought of wiggling fingers approaching our rib cage or moving towards our underarms is enough to elicit squeals of laughter and giggles. However, while we all know that tickling makes us happy, Michael Brecht, a professor at Berlin’s Humboldt University, says it is “one of the most poorly understood forms of touch.”

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