Sophie Scott: Human who researches cognitive neuroscience of voices, speech and laughter at University of London

Sophie Scott on Why Human Voices (and Conversations) Still Matter in an AI WorldNeuroscientist Sophie Scott (UCL), whose research focuses on speech perception and vocal communication, discusses how the brain changes through life by rewiring neural connections rather than growing new neurons, and why human voices carry powerful social and emotional meaning from before birth. She explains that babies learn their mother’s voice and the rhythm of language in utero, and that singing uniquely soothes infants and engages specialized brain responses even in adults. Scott describes conversation as a precisely timed, affiliative “joint action” where people align pitch, rhythm, words, and even breathing, producing bonding effects linked to endorphins, akin to primate grooming. The hosts contrast this with text and synthetic/AI voices, arguing AI lacks natural alignment and emotional reactivity, raising concerns about reduced human connection, voice cloning, and growing exposure to automated customer service and AI narration.00:00 Meet Sophie Scott00:33 Standup Scientist01:22 You Only Get One Brain03:37 Why Voices Matter03:57 Voices Before Birth05:46 Singing Bonds Us08:50 Conversation Alignment10:17 What Voices Reveal11:41 Accents And Identity12:37 Audiobooks Versus AI15:05 Synthetic Voice Risks16:24 Voice Cloning Research19:31 Texting Versus Talking20:56 Dunbar And Endorphins25:12 AI Newsreader Backlash28:37 Wrapping Up And Next Time