Episode Description
In this episode of Neural Compass, host Mark Jacobstein sits down with David Eagleman — neuroscientist at Stanford, author of Livewired and Incognito, and creator of the Emmy-nominated PBS series The Brain — for a conversation that reframes everything you think you know about how the brain works, and what that means for how we treat it when it doesn't.
The conversation starts with a word. William James introduced "brain plasticity" a hundred years ago, and Eagleman thinks it was a mistake. Not the concept — the metaphor. Plastic holds its shape. The brain never does. It is continuously, at every nanosecond, reconfiguring. One hundred billion neurons unplugging and replugging and changing the strength of their connections. Not when something dramatic happens. Always.
New episodes every two weeks. This one will change how you think about therapy, about TMS, about ketamine — and about the violin Einstein played for most of his life.
This episode covers:
- Why "plasticity" is the wrong metaphor — and what "livewired" captures that it doesn't
- The man with hydrocephalus, a normal IQ, a job, and a marriage — and a brain scan that should have made none of that possible
- Why violinists grow an extra fold in their brain, pianists grow two, and Einstein's skull still shows the record of a lifetime of left-hand finger work
- Why CBT, TMS, ketamine, and talk therapy are all working on the same underlying mechanism — and what that means for how we build mental health tools
- Why removing half a child's brain can leave them largely intact — and why no data center survives the removal of half its racks
About the Speakers

David Eagleman is an American neuroscientist, bestselling author, and science communicator. He teaches neuroscience at Stanford University and has founded several neurotech startups. He directs the non-profit Center for Science and Law, which seeks to align the legal system with modern neuroscience. He is known for his work on brain plasticity, time perception, synesthesia, and neurolaw. He is a Guggenheim Fellow and a New York Times-bestselling author published in 32 languages. He is the writer and presenter of the international television series The Brain with David Eagleman and the host of the podcast Inner Cosmos with David Eagleman. His podcast has been ranked as the number-one science podcast on Apple several times and in 2024 was nominated for the best science podcast of the year at the iHeart Podcast Awards at SXSW.

Mark Jacobstein is the co-founder and president of Jimini Health. A longtime entrepreneur at the intersection of AI and health tech, he now leads Jimini’s mission to transform mental and behavioral health through clinically grounded, AI-powered care.
For healthcare executives, researchers, investors, and anyone who thinks the mental health crisis deserves serious answers — this is the show.





