the researchers can design the spots for EEG electrodes on the patient's scalp. Then, they use a digitally controlled inkjet printer to spray a thin layer of the e-tattoo ink on to the spots.

Scientists recently published a study in Cell Biomaterials showcasing an electronic tattoo printed directly on the scalp that is capable of monitoring brain activity noninvasively with a stable ...

The scalp camouflage needle is similar to that of a tattoo needle. It's this three-prong that creates the perfect size of a hair follicle. Unlike tattooing, this one will eventually fade over time ...

The ink formula can also be modified to create tattoo lines onto the scalp, meaning that the wires that connect the e-tattoos to a monitor are much shorter than they would be in a regular EEG test.