Futurity January 3, 2025
A new conductive ink can be printed directly on the surface of a patient’s head and measure their brainwaves.
Since the emergence of temporary, skin-attached electronic tattoos more than a decade ago—and their evolution to measure heart activity, track pneumonia, measure stress levels, and more—researchers have grappled with a major logistical challenge: How can they be applied to hairy skin without losing performance?
To figure out this challenge, researchers borrowed from regular tattoos.
Their new e-tattoos serve as the sensors for electroencephalography (EEG), a medical test that measures the brain’s electrical activity. EEG can help diagnose and monitor brain tumors, sleep disorders, and other brain issues.
“The holy grail for EEG is a sensor that patients can wear for long...
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