37:25

In this episode of The Empowering Neurologist, Dr. David Perlmutter interviews neuroscientist and author Dr. Emma Byrne about her book Swearing Is Good for You. The conversation begins with a working definition of swearing as taboo, emotionally charged language. Dr. Byrne describes the classic ice‑bucket experiment (Richard Stephens) that shows swearing increases pain tolerance, explaining how the study controls for word recall and neutral‑word conditions. They discuss how swearing can enhance group cohesion and performance, citing a New Zealand factory study where a leader’s strategic use of profanity boosted team morale. The interview then moves to the neuroanatomical basis of swearing: historical cases such as Phineas Gage, modern stroke‑induced aphasia where profanity persists, and intra‑operative amygdala stimulation that triggers fluent swearing, illustrating the amygdala’s role in emotional regulation and inhibition. Dr. Byrne links this to Tourette syndrome, outlining dopamine‑driven reward circuitry, the prevalence of coprolalia, and emerging behavioral therapies that redirect tics without suppressing dopamine reward. Evolutionary speculation follows, proposing that profanity may have served as a non‑violent way to enforce social norms in early hunter‑gatherer groups. The discussion then turns to gender bias: experimental data showing women who swear are judged as less attractive and less powerful, contrasted with historical evidence that medieval women were celebrated for elaborate profanity, and the later Victorian shift toward a double standard. They also cover historical censorship of profanity in literature, especially Shakespeare’s redacted editions, and note cultural variability in swearing research (UK, Australia, New Zealand versus limited US studies). The interview concludes with reflections on the pervasive, powerful nature of swear words and an invitation to read Dr. Byrne’s book.

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