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Bioinspired Soft Robot with Incorporated Microelectrodes
Published on: February 28, 2020
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Brain implantation of soft bioelectronics via embryonic development
Hao Sheng1, Ren Liu1, Qiang Li1
1John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA, USA.
Nature
|June 11, 2025
Summary
Researchers developed a flexible, mesh-like electrode that integrates into the developing brain, enabling stable, long-term recording of neural activity. This technology aids in understanding brain development and neurodevelopmental disorders.
Area of Science:
- Neuroscience
- Bioelectronics
- Developmental Biology
Background:
- Tracking neural activity in the developing brain is crucial for understanding neurodevelopmental disorders.
- The dynamic morphological changes during embryonic brain development challenge existing implantable electrode technologies.
- Previous methods struggle to maintain stable neural recordings throughout brain development.
Purpose of the Study:
- To develop a novel bioelectronic interface for stable, long-term, single-cell, millisecond-resolved neural activity tracking in the developing brain.
- To overcome the limitations of current technologies in accommodating the brain's developmental morphological changes.
- To investigate neural activity dynamics during brain development and regeneration.
Main Methods:
- Introduction of a tissue-level-soft, submicrometre-thick mesh microelectrode array.
- Leveraging the embryonic neural plate's natural 2D-to-3D reconfiguration for electrode integration.
- Utilizing immunostaining, gene expression analysis, and behavioral testing to assess biocompatibility and functional impact.
- Recording and stimulating neural electrical activity in axolotl models during regeneration.
Main Results:
- The mesh electrode seamlessly integrates and distributes throughout the developing brain without adverse effects.
- Stable, long-term mapping of single-neuron activity and population dynamics during brain development is achieved.
- The electrode successfully recorded neural activity during axolotl regeneration and modulated the process via electrical stimulation.
Conclusions:
- The developed mesh microelectrode array offers a breakthrough for monitoring neural activity throughout brain development.
- This technology provides unprecedented insights into neural circuit formation and function.
- The bioelectronic interface shows potential for therapeutic interventions in neurodevelopmental disorders and regenerative processes.
