“How does the brain work?” is a question as old as the brain itself. The brain is composed of billions of neurons and quadrillions of connections between them. Somewhere in this vast and complex ...

Optical microscope image of the implantable shanks (141 micron pitch) of a light sheet neural probe. Light is emitted by nanophotonic gratings on the shanks to form light sheets. Disclaimer: AAAS and ...