Hannah Critchlow on the connected brain

Hannah Critchlow on the connected brain

Author: BBC Radio 4 April 16, 2024 Duration: 28:09

With 86 billion nerve cells joined together in a network of 100 trillion connections, the human brain is the most complex system in the known universe.

Dr. Hannah Critchlow is an internationally acclaimed neuroscientist who has spent her career demystifying and explaining the brain to audiences around the world. Through her writing, broadcasting and lectures to audiences – whether in schools, festivals or online – she has become one of the public faces of neuroscience.

She tells Professor Jim Al-Khalili that her desire to understand the brain began when she spent a year after school as a nursing assistant in a psychiatric hospital. The experience of working with young patients - many the same age as her - made her ask what it is within each individual brain which determines people’s very different life trajectories.

In her books she’s explored the idea that much of our character and behaviour is hard-wired into us before we’re even born. And most recently she’s considered collective intelligence, asking how we can bring all our individual brains together and harness their power in one ‘super brain’.

And we get to hear Jim’s own mind at work as Hannah attaches electrodes to his head and turns his brain waves into sound.

Producer: Jeremy Grange


Hosted by physicist and author Professor Jim Al-Khalili, The Life Scientific offers a rare and intimate glimpse into the minds shaping our world. Each conversation moves beyond the standard lecture or interview, weaving together personal history with groundbreaking ideas. You’ll hear how childhood curiosity, unexpected setbacks, and moments of sheer luck have steered the careers of some of today's most influential researchers. This BBC Radio 4 podcast treats science not as a remote collection of facts, but as a deeply human endeavor driven by passion, perseverance, and sometimes, serendipity. The discussions delve into the real process of discovery-the late-night frustrations, the collaborative breakthroughs, and the ethical questions that arise from new knowledge. While exploring everything from the smallest particles to the vastness of the cosmos, the core of each episode remains the individual behind the science. Listeners come to understand not just what these scientists know, but who they are and what continues to drive them forward. It’s a series that connects the personal to the universal, making complex fields accessible and profoundly relevant. By focusing on the life as much as the science, this podcast reveals how our future is being built, one question at a time, in labs, field stations, and offices around the globe.
Author: Language: English Episodes: 50

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