The online world can be isolating — and it can even contribute to rage, depression and extremism. But technology and the web can also be used to foster community, understanding and even spirituality.
When drugs fail, another option is deep brain stimulation, or DBS, where electrodes are placed in a specific brain region that helps control muscle activity.
In 2014, U.S. regulators approved a futuristic treatment for blindness. The device, called Argus II, sends signals from a glasses-mounted camera to a roughly 3-by-5-millimeter grid of electrodes at the back of eye.