Issue 91: The Amazing Brain (3)

Brain “plasticity” is one of the great discoveries in modern science, but neuroscientist David Eagleman thinks the word is misleading. Unlike plastic, which molds and then retains a particular shape, the brain’s physical structure is continually in flux. But Eagleman can’t avoid the word. “The whole literature uses that term plasticity, so I use it sparingly,” he says. Eagleman also discounts computer analogies to...

Don’t look at the clock! Now tell me: How much time has passed since you first logged on to your computer today? Time may be a property of physics, but it is also a property of the mind, which ultimately makes it a product of the brain. Time measures out and shapes our lives, and how we live our lives in turn affects how...

You might say the brain is our most photogenic organ. We are, thanks to modern neuroimaging, living amid an explosion of brain data. Just consider: We can zoom into the brain’s connectivity to the most minute, molecular level. We can trace individual cells as well as entire cell populations. We can turn neurons on and off just like a light switch. We can even...