How a Light Beam Is Tailored to Brain Depth
The laser beam in a three-photon microscope works like a flashlight shining through murky water. The deeper you need to illuminate, the more the water scatters light and the dimmer the picture gets.
Sleep by Cardiogram: How a Single ECG Lead Could Replace a Night in the Lab
You sleep, but your heart keeps telling stories. The rhythm of beats, the pauses between them, the respiratory waves — all shift from one sleep stage to the next. In a sleep lab, this is read from a host of sensors on the head, face, legs, and chest. It's cumbersome, expensive, and not something you can do at home.