KAIST unveils wireless chip tracking acetylcholine in living brains

A KAIST-led team under Professor Jang Kyung-in built a miniature wireless implant that continuously measures acetylcholine in the prefrontal cortex of minipigs after donepezil dosing. The results were published in Device on October 14, 2026.

• The chip streams neurotransmitter data from a living brain without cables
• An Ag@Pt nanowire and chitosan sensor cuts interference from other molecules
• The experiment tracked acetylcholine dynamics in minipigs after donepezil
• The study appeared in Device on October 14, 2026