Revolutionary Brain Probe Combines Recording and Light Control in a Single Device
A new device called Neuropixels Opto is set to transform neuroscience research by merging two essential technologies—recording brain activity and controlling it with light—into a single, ultra-thin probe. Developed by an international team including scientists at UCL and the Allen Institute, the innovation was detailed in Nature Methods and is part of a £15 million project funded by the Wellcome Trust, the Allen Institute, and other partners.
"The device overcomes limitations of combining electrophysiology and optogenetics, especially in deep brain regions." - Professor Matteo Carandini, UCL Institute of Ophthalmology
Unprecedented Precision in Deep Brain Regions
The probe, narrower than a human hair, features hundreds of recording sites and microscopic light emitters. This allows researchers to monitor the electrical activity of hundreds of neurons while simultaneously activating or silencing specific cells using light. This dual capability is a significant leap forward, as previous approaches required separate tools, making it difficult to test causal relationships in deep brain structures.
Functionality: Bridging Observation and Intervention
- Simultaneous Recording and Manipulation: Neuropixels Opto can track neural firing patterns while precisely targeting individual neurons for light-based control.
- Causal Testing: The technology enables researchers to directly test how changes in neuronal activity influence brain function, behavior, and perception—a task previously impractical.
New Insights into the Brain's Operating Principles
Dr. Karolina Socha (UCL) reported surprising findings from studies in mice, revealing that cortical neurons can operate independently, not only in concert.
Applications for Neurology and Psychiatry
The device holds promise for understanding the neural circuits underlying:
- Behavior, perception, learning, and decision-making
- Neurological and psychiatric disorders, including Alzheimer's disease, schizophrenia, and Parkinson's disease
By revealing circuit disruptions, Neuropixels Opto could provide new targets for therapeutic interventions.
Background: A Next-Generation Tool
Neuropixels are already established as next-generation silicon probes capable of recording the electrical activity of hundreds of neurons simultaneously. Neuropixels Opto adds integrated optogenetic manipulation capability, closing the loop between observation and intervention in a way that was previously impossible.