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Related Experiment Video

Updated: Jul 27, 2025

Chronic Implantation of Multiple Flexible Polymer Electrode Arrays

Chronic Implantation of Multiple Flexible Polymer Electrode Arrays

Published on: October 4, 2019

A CMOS-based highly scalable flexible neural electrode interface.

Eric T Zhao¹, Jacob M Hull², Nofar Mintz Hemed³

¹Department of Chemical Engineering, Stanford University, Stanford, CA, USA.

Science Advances

|June 7, 2023

Summary

This summary is machine-generated.

This study introduces Flex2Chip, a scalable electrode connector for high-density neural recordings. It enables precise mapping of brain activity, revealing non-constant seizure propagation in epilepsy models.

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Last Updated: Jul 27, 2025

Chronic Implantation of Multiple Flexible Polymer Electrode Arrays

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Published on: October 4, 2019

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Author Spotlight: Advancing Large-Scale Neural Dynamics Through HD-MEA Technology

Author Spotlight: Advancing Large-Scale Neural Dynamics Through HD-MEA Technology

Published on: March 8, 2024

Area of Science:

Neuroscience
Bioengineering
Medical Devices

Background:

Coordinated neural activity underlies complex brain functions.
Current electrophysiological devices face scalability limitations for cortex-wide recordings.

Purpose of the Study:

To develop a scalable electrode connector for high-density neural recordings.
To enable precise measurement of large-scale neuronal population activity.

Main Methods:

Developed ultra-conformable thin-film electrode arrays (Flex2Chip).
Utilized self-assembly via capillary forces and van der Waals interactions for interconnects.
Tested ex vivo and in vivo using epileptic mouse models (Scn8a+/-).

Main Results:

Achieved multithousand channel counts at millimeter scale.
Successfully measured extracellular action potentials ex vivo.
Resolved micrometer-scale seizure propagation trajectories in vivo.
Demonstrated that seizure dynamics in absence epilepsy do not follow constant trajectories.

Conclusions:

Flex2Chip offers a scalable solution for high-density neural recording.
The technology advances the study of large-scale brain dynamics.
New insights into seizure propagation dynamics were obtained in an epilepsy model.