There’s a problem with your brain… well, not your brain specifically, but there’s a problem when it comes to neuroscientists understanding how your brain works when you’re listening to stuff. In the past few years there have been massive advancements in mapping out the parts of your brain that are activated when when you hear. But the closer we look, the more complicated it gets. What exactly, in all that insanely complex network of neural connections, is going on in your head that makes it possible to hear sounds, filter out only the most important parts, and understand what they mean? In our fourth instalment, intrepid host Tim Hinman meets Trevor Cox, a professor of acoustics and perception, and gets the lowdown on what’s up with the brain and how (we think) it cognates sound.