Forehead ‘e-tattoo’ tracks how hard you’re thinking
Nature, Published online: 29 May 2025; doi:10.1038/d41586-025-01652-5Temporary device records eye movement and brain activity to monitor mental strain.

Nature, Published online: 29 May 2025; doi:10.1038/d41586-025-01652-5Temporary device records eye movement and brain activity to monitor mental strain.