Neural implant smaller than salt grain wirelessly tracks brain

Neurobiology and Behavior

By | Syl Kacapyr , Cornell Chronicle

11/3/2025

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Grey square topped by a silver arrow-shaped object — Sunwoo Lee/Provided A neural implant developed at Cornell rests on a grain of salt. About 300 microns long and 70 microns wide, it’s the smallest neural implant capable of wirelessly transmitting brain activity data.

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