Precision records from 4,096 electrodes on a human brain simultaneously

Precision Neuroscience/Layer 7 Cortical Interface

In an April 2024 procedure at Mount Sinai, surgeons placed four of Precision's thin-film Layer 7 arrays on a patient's brain during tumor resection, implanting 4,096 electrodes over approximately 8 square centimeters—doubling the previous record of 2,048. The system streamed live cortical data and mapped the motor-sensory boundary, assisting surgeons in avoiding critical brain regions during tumor removal.

• 4,096 electrodes on thin flexible film (1,024 per array); non-invasive surface placement requires no brain penetration; previous world record: 2,048 electrodes.
• Covered ~8 square centimeters of motor-sensory cortex; enabled real-time mapping of functional brain boundaries during awake neurosurgery.
• Clinical application: intraoperative brain mapping during tumor resection; detailed spatial and temporal neural signal capture at unprecedented density.