For a century, neuroscience mapped the brain spot by spot. Then it discovered something stranger: the brain works in networks — and now we're learning to steer them.

Home-based brain stimulation is reshaping care for mild cognitive impairment. Emerging evidence shows that caregiver-administered tACS can deliver safe, scalable, and repeatable neuromodulation at home—opening new opportunities to improve adherence, accessibility, and long-term cognitive outcomes beyond the clinic.