Topic: Technology

Scientists at Cornell University created a tiny implant that can read brain activity and transmit it wirelessly. This breakthrough could lead to new ways to monitor brains and develop medical devices.

Researchers at Cornell University have made a significant discovery in the field of neuroscience. They've developed an extremely small neural implant, called MOTE (microscale optoelectronic tetherless electrode), that can sit on a grain of salt. Despite its tiny size, the device can transmit brain activity data wirelessly for over a year.

The MOTE uses red and infrared laser beams to safely pass through brain tissue. It sends data back by emitting tiny pulses of infrared light that encode electrical signals from the brain. This technology has the potential to revolutionize brain monitoring and could lead to new approaches in medicine and technology.

The team, led by Professor Alyosha Molnar, included Sunwoo Lee, an assistant professor at Nanyang Technological University. The project began as a collaboration between researchers from Cornell and Nanyang Technological University.

The MOTE measures about 300 microns in length and 70 microns in width. It's the smallest neural implant that can measure electrical activity in the brain and transmit it wirelessly. The device uses pulse position modulation, a code used in optical communications for satellites, to communicate with minimal power consumption.

This breakthrough has many potential applications. For instance, researchers could use MOTE to record brain activity during MRI scans, which is currently not possible. The technology could also be adapted for other parts of the body, such as the spinal cord, and eventually combined with future innovations like opto-electronics embedded in artificial skull plates.

The study was published in Nature Electronics on November 3, 2025.

Why It Matters

This breakthrough has the potential to improve our understanding of the brain and could lead to new treatments for neurological disorders. It's an exciting development that could benefit people all over the world, including India.

Key Facts

• Scientists at Cornell University developed a tiny neural implant called MOTE that can read brain activity and transmit it wirelessly.
• The MOTE is smaller than a grain of salt and has been tested to transmit data for over a year.
• The device uses red and infrared laser beams to safely pass through brain tissue.
• The technology could be used to record brain activity during MRI scans, which is currently not possible.
• The study was published in Nature Electronics on November 3, 2025.

Key Terms

Neural implant

A device that can read and transmit electrical signals from the brain

Implications

This breakthrough has the potential to improve our understanding of the brain and could lead to new treatments for neurological disorders. It's an exciting development that could benefit people all over the world, including India.