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Related Experiment Video

Updated: Jun 2, 2026

A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats

A Wireless, Bidirectional Interface for In Vivo Recording and Stimulation of Neural Activity in Freely Behaving Rats

Published on: November 7, 2017

Intravascular Neural Interface with Nanowire Electrode.

Hirobumi Watanabe¹, Hirokazu Takahashi, Masayuki Nakao

¹New York University, USA.

Electronics and Communications in Japan = Denki Gakkai Ronbunshi

|May 17, 2011

Summary

This summary is machine-generated.

Researchers developed a novel microcatheter with submicron electrodes for minimally invasive neural recording. This technique shows promise for large-scale neuronal monitoring via the vascular system in brain-machine interfaces.

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Last Updated: Jun 2, 2026

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Area of Science:

Neuroscience
Biomedical Engineering
Materials Science

Background:

Effective brain-machine interfaces require methods to monitor thousands of neurons simultaneously.
Current techniques struggle to access large neuronal populations in behaving subjects.
The brain's vascular system offers a potential route for minimally invasive neural access.

Purpose of the Study:

To design and fabricate a microcatheter system for intravascular neural recording.
To evaluate the mechanical properties and feasibility of deploying electrodes within the cerebrovasculature.
To demonstrate the potential for large-scale neuronal activity monitoring through blood vessels.

Main Methods:

Fabrication of submicron-scale electrodes using Wollaston platinum wire.
Development of a microcatheter system for electrode delivery.
Ex vivo mechanical evaluation of electrode behavior in simulated capillary flow.
Intravascular electrophysiological recordings in Xenopus laevis spinal cord.

Main Results:

Successful fabrication of submicron electrodes suitable for vascular deployment.
Demonstrated mechanical integrity of electrodes within complex microvascular networks.
Feasibility of intravascular neural recording established in an ex vivo model.
Potential for monitoring large neuronal populations via the vascular system.

Conclusions:

The developed microcatheter system offers a promising minimally invasive approach for neural recording.
Intravascular electrode deployment is feasible for accessing neuronal populations.
This technology could advance brain-machine interface development by enabling large-scale neural monitoring.