Related Experiment Video
Updated: Feb 4, 2026
11:27
Interfacing Microfluidics with Microelectrode Arrays for Studying Neuronal Communication and Axonal Signal Propagation
Published on: December 8, 2018
8.6K
Microfluidics-guided localized low-temperature modulation of axonal signal propagation
Jaehyun Kim1, Eunseok Seo1, Na Yeon Kim1
1Department of Mechanical Engineering, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul 04107, Republic of Korea. sortpark@sogang.ac.kr.
Lab on a Chip
|February 3, 2026
Summary
Localized cooling reversibly suppresses neural and axonal activity. Prolonged cooling causes persistent axonal conduction delays, revealing selective vulnerability and paving the way for targeted neuromodulation strategies.
Area of Science:
- Neuroscience
- Bioengineering
- Biophysics
Background:
- Low-temperature stimulation shows promise for neuromodulation, but its effects on axonal conduction are unclear.
- Existing methods lack spatial resolution for studying localized cooling effects on axons.
Purpose of the Study:
- To investigate the impact of localized cooling on axonal conduction properties.
- To develop a platform for high-resolution, real-time monitoring of cooling-induced neuromodulation.
Main Methods:
- Developed a microfluidic platform integrating a microelectrode array (MEA) with a localized cooling module.
- Monitored cooling-induced signal propagation in unidirectionally guided axons in real-time.
- Quantitatively validated findings using high-resolution electrophysiological recordings.
Main Results:
- Short-term cooling (1 minute) caused reversible suppression of neuronal and axonal activity.
- Long-term cooling (5 minutes) led to persistent axonal conduction delays post-rewarming, despite network recovery.
- Demonstrated that localized cooling alters axonal conduction by affecting ion channel kinetics and membrane excitability.
Conclusions:
- Localized cooling selectively impacts axonal conduction, with prolonged exposure causing lasting delays.
- The microfluidic-MEA platform enables detailed investigation of cold-induced neuromodulation at the axonal level.
- Findings support development of precision neuromodulatory strategies for neuroengineering and potential therapeutic applications.
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