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Related Experiment Video

Updated: Dec 11, 2025

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording
06:36

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In Vivo Optogenetic Modulation with Simultaneous Neural Detection Using Microelectrode Array Integrated with Optical

Penghui Fan1,2, Yilin Song1,2, Shengwei Xu1,2

  • 1Aerospace Information Research Institute Chinese Academy of Sciences, Beijing 100190, China.

Sensors (Basel, Switzerland)
|August 23, 2020
PubMed
Summary

This study integrates optogenetics with neural recording for advanced brain research. Combining these techniques offers new insights into neural circuits and neuron activity.

Keywords:
electrophysiologyin situ detectionmicro-electrode arrayneural circuit recognitionoptogenetics

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Area of Science:

  • Neuroscience
  • Biotechnology
  • Neural Engineering

Background:

  • Optogenetic modulation and neuroelectrophysiology are crucial for understanding neural circuits.
  • Integrating these technologies can enhance data reliability and research scope.

Purpose of the Study:

  • To develop an integrated system for simultaneous optogenetic modulation and electrophysiological recording.
  • To investigate neural circuit properties and the effects of optical stimulation parameters in vivo.

Main Methods:

  • Integration of an optical fiber and a microelectrode array using hot-melt adhesive bonding.
  • In vivo experiments on infected neurons in the hippocampal CA1 and upper cortical areas (900-1250 μm depth).
  • Analysis of neural activity under varying optical stimulation patterns and light powers.

Main Results:

  • Successful combination of optogenetics and electrophysiological detection for neuromodulation and neuronal activity recording.
  • Low-frequency, large-duty-cycle optical stimulation induced more intense neuronal activity.
  • Higher light power (1.032 mW-1.584 mW) resulted in more action potentials.

Conclusions:

  • The integrated approach provides a powerful tool for in vivo neural circuit recognition and study.
  • This method offers efficient detection and modulation of neurons, advancing neural research.
  • Findings highlight the impact of stimulation parameters on neuronal responses.