Scalable, Lightweight, Integrated and Quick-to-Assemble (SLIQ) Hyperdrives for Functional Circuit Dissection

Area of Science:

• Neuroscience
• Bioengineering
• Implantable Devices

Background:

• Multielectrode arrays are crucial for chronic in vivo neuronal ensemble monitoring at single-cell resolution.
• Current fabrication methods are highly specialized, limiting widespread adoption.
• Simultaneous electrophysiological recording and optogenetic manipulation is essential for neural circuit interrogation.

Purpose of the Study:

• To develop a scalable, lightweight, and easily assembled multielectrode array platform.
• To integrate optical fibers for simultaneous recording and optogenetics.
• To facilitate functional dissection of intact neural circuits.

Main Methods:

• Computer-aided design (CAD) for platform development.
• Finite element analysis (FEA) for parameter testing.
• Experimental validation in mice and rats for various applications.

Main Results:

• A scalable platform (2-32 microdrives) weighing 1-3g was developed.
• The platform integrates independently adjustable electrodes and optical fibers.
• Successful implementation demonstrated in freely behaving mice and rats.

Conclusions:

• The developed platform simplifies the use of multielectrode recordings.
• Integration with optical fibers enables simultaneous recording and optogenetics.
• This technology expands the utility of neural circuit dissection tools.