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science1d ago
Brain Microchip Smaller Than a Grain of Salt Sends Data Using Lasers and Satellite Technology
- Cornell researchers created the smallest wireless neural implant to measure brain activity and report it back optically.
- The device is powered and communicates using red and infrared laser beams that pass through the skull.
- In tests, the implant functioned for more than a year in mice without affecting their health or behavior.
- The system uses a semiconductor diode and optical encoder to process signals and transmit data.
- The device, named MOTE, is a tetherless, optoelectronic system designed for long-term use.
- Researchers hope the technology could extend to other tissues and MRI-safe settings.
- Power and data delivery rely on light-based methods, reducing tissue irritation compared to wired implants.
- The implant measures activity from single neurons to broad brain waves in the barrel cortex of mice.
- The study was published in Nature Electronics and supported by Cornell researchers.
- The discovery marks a milestone in miniaturizing neural interfaces for long-term use.
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