Neuropixels Opto: combining high-resolution electrophysiology and optogenetics

Area of Science:

• Neuroscience
• Bioengineering
• Electrophysiology

Background:

• High-resolution extracellular electrophysiology is crucial for studying neural populations.
• Optogenetics allows precise temporal control over specific cell types.
• Combining these techniques offers powerful insights into neural circuit function.

Purpose of the Study:

• To integrate electrophysiology and optogenetics into a single probe.
• To develop a tool for simultaneous recording and manipulation of neural activity.
• To assess the performance of the integrated probe in vivo.

Main Methods:

• Development of Neuropixels Opto probes with 960 recording sites and light emitters.
• Integration of electronic and photonic circuits on a narrow shank.
• In vivo testing in mouse cortex and striatum for recording and optogenetic stimulation.

Main Results:

• Neuropixels Opto probes achieved high-quality recordings alongside spatially addressable optogenetics.
• Differential activation/silencing of neurons at various cortical depths was demonstrated.
• Efficient optotagging in deep brain structures identified multiple cell types concurrently.

Conclusions:

• Neuropixels Opto probes successfully combine electrophysiology and optogenetics.
• This technology enables precise manipulation and identification of neuronal populations.
• The probes represent a significant advancement for neuroscience research.