High-resolution CMOS MEA platform to study neurons at subcellular, cellular, and network levels

Area of Science:

• Neuroscience
• Bioelectronics
• Materials Science

Background:

• Understanding neuronal networks requires simultaneous monitoring of many neurons.
• Current technologies have limitations in scale and resolution for comprehensive network analysis.

Purpose of the Study:

• To present a novel CMOS-based device for high-density, simultaneous neural recordings.
• To enable detailed investigation of neuronal activity at subcellular, cellular, and network levels.

Main Methods:

• Development of a CMOS device with 26,400 microelectrodes in a reconfigurable array.
• Simultaneous recording of over a thousand cells using 1024 low-noise channels.
• Integration of 32 stimulation units for electrical stimulation and recording.

Main Results:

• Demonstrated simultaneous recording of electrical activity from over a thousand neurons in vitro.
• Achieved high spatiotemporal resolution for subcellular, cellular, and network-level analysis.
• Validated device applicability for large-scale network recordings and individual axonal property investigations.

Conclusions:

• The developed CMOS device significantly advances the capability for large-scale neural recordings.
• This technology facilitates comprehensive studies of information processing and learning in neuronal networks.
• Offers a powerful tool for diverse experimental paradigms in neuroscience research.