Exploring Ian McGilchrist's groundbreaking research on split-brain patients that reveals how our two brain hemispheres create fundamentally different ways of perceiving reality—and what happens when they can no longer work together.

The nature of the attention we bring to bear on the world changes what we find. Attention is a moral act: how we choose to pay attention—with narrow, grasping focus or with open, caring awareness—shapes both ourselves and the world around us.
Creado por exalumnos de la Universidad de Columbia en San Francisco
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Creado por exalumnos de la Universidad de Columbia en San Francisco

Lena: Hey Miles, I've been thinking about something that sounds almost too strange to be true. What if I told you that the way we pay attention to the world literally shapes what we can perceive?
Miles: Oh, that's fascinating, Lena! And you know what's even more intriguing? McGilchrist shows us that we actually have two completely different ways of attending to reality happening simultaneously in our brains. It's not just about focus versus distraction—it's about fundamentally different modes of being in the world.
Lena: Right! And here's what really got me—he argues that one hemisphere gives us broad, vigilant attention that's open to the unexpected, while the other provides that laser-focused, goal-driven attention. But here's the question that's been nagging at me: if both are happening at once, how do we know which one is actually running the show?
Miles: That's exactly the right question to ask! Because what McGilchrist discovered through studying split-brain patients is that when these two systems get disconnected, we see something remarkable—and honestly, a bit unsettling—about how our normal perception actually works. So let's dive into what happens when the brain's two ways of seeing the world can no longer work together.