Researchers at the University of California San Diego have figured out a way to turn everyday earbuds into high-tech gadgets that can record electrical activity inside the brain. The 3D screen-printed, flexible sensors are not only able to detect electrophysiological activity coming from the brain but they can also harvest sweat. Yes, sweat.
More specifically, sweat lactate, which is an organic acid that the body produces during exercise and normal metabolic activity. Because the ear contains sweat glands and is anatomically adjacent to the brain, earbuds are an ideal tool to gather this kind of data.
You may be wondering why scientists are interested in collecting biometric info about brain activity at the intersection of human sweat. Together, EEG and sweat lactate data can be used to diagnose different types of seizures. There are more than 30 different types of recorded seizures, which are categorized differently according to the areas of the brain that are impacted during an event.
But even beyond diagno
