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Why can’t we stop laughing once we start?

Oct 20, 2026 · 4m

Summary

Professor Sophie Scott discusses the evolutionary roots of laughter, noting it is shared by apes and rats as a bonding mechanism during play. She explains that laughter serves as an invitation to play, crucial for developing mammal brains, and distinguishes between voluntary social laughter and involuntary, uncontrollable bursts. The segment also explores how depression may reduce laughter by diminishing the sense of connection and joy typically associated with it.

Topics discussed

Sherwin-Williams Super Sale advertisement Introduction to Sophie Scott and the topic of laughter Laughter in apes: chimpanzees and gorillas Laughter analogues in rats and other animals Rat play-fighting and tickling behaviors Evolutionary role of laughter in bonding Importance of play for brain development Involuntary laughter and neural control Voluntary vs involuntary laughter mechanisms Human perception of laughter frequency Laughter and depression research Closing remarks and contact information Sherwin-Williams Super Sale advertisement
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