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Published on: November 19, 2017
Development of an integrated microelectrode/microelectronic device for brain implantable neuroengineering
Y-K Song1, W R Patterson, C W Bull
1Division of Engineering, Brown University, Providence, RI, USA.
Summary
Researchers developed a microminiaturized neuroport by integrating an ultra-low power chip with a microelectrode array. This device enables neural interface applications, demonstrated by recording brain signals from rat brain slices.
Area of Science:
- Neuroengineering
- Biomedical Devices
- Materials Science
Background:
- Development of implantable neural interfaces is crucial for understanding brain function and treating neurological disorders.
- Existing neural probes often face challenges with size, power consumption, and integration of electronics.
Purpose of the Study:
- To create a fully integrated, microminiaturized neuroport for brain implantable neuroengineering applications.
- To demonstrate the feasibility of the neuroport for recording neural activity.
Main Methods:
- Integration of an ultra-low power analog CMOS chip with a silicon-based microelectrode array.
- Development of a hybrid flip-chip bonding technique for device fabrication and encapsulation.
- Proof-of-concept demonstration using local field potential recordings from ex vivo rat thalamocortical brain slices.
Main Results:
- Successful fabrication of a functional, encapsulated, microminiaturized neuroprobe device.
- Demonstrated capability to record local field potentials from brain tissue.
- The integrated system achieved ultra-low power consumption.
Conclusions:
- The developed neuroport represents a significant advancement in creating compact neural interfaces.
- This technology offers a promising platform for future development of single-unit implantable neural interfaces.
- The device shows potential for applications in brain-computer interfaces and neural monitoring.
