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Related Experiment Video

Updated: Oct 19, 2025

In vivo Optogenetic Stimulation of the Rodent Central Nervous System
09:37

In vivo Optogenetic Stimulation of the Rodent Central Nervous System

Published on: January 15, 2015

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A Closed-Loop Optogenetic Platform.

Dimitrios Firfilionis1, Frances Hutchings2, Reza Tamadoni1

  • 1Neuroprosthesis Lab, School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom.

Frontiers in Neuroscience
|September 27, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed an open-source system for closed-loop optogenetic neuromodulation. This platform enhances precision for neurological treatments and preclinical research by integrating recording and stimulation.

Keywords:
closed-loopelectrophysiologyneuromodulationopen-sourceoptogenetics

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Optogenetics

Background:

  • Neuromodulation is a key treatment for neurological disorders.
  • Enhanced spatial, temporal, and cell-type specificity is needed to broaden neuromodulation's therapeutic applications.
  • Optogenetics offers precise cell-type targeting for neural stimulation without disrupting electrical recordings.

Purpose of the Study:

  • To develop an open-source platform for closed-loop optogenetic neuromodulation.
  • To integrate custom hardware, real-time algorithms, and a user interface for precise neural control.
  • To validate the system's performance for preclinical neuroscience applications and potential human translation.

Main Methods:

  • Designed and implemented the Controlling Abnormal Network Dynamics using Optogenetics (CANDO) Control System (CS).
  • Utilized custom CANDO LED optrodes for simultaneous electrical recording and optical stimulation.
  • Developed a real-time closed-loop algorithm on a microcontroller and a PC-based Graphical User Interface (GUI) for system control and data acquisition.

Main Results:

  • The CANDO system successfully integrates custom integrated circuitry for recording and stimulation.
  • Real-time closed-loop algorithms running on a microcontroller enable precise neural activity control.
  • Demonstrated the system's capability to modulate neuronal oscillations both in vitro and in vivo.

Conclusions:

  • The developed open-source platform provides a flexible and expandable solution for closed-loop optogenetic neuromodulation.
  • The system facilitates precise control over neural activity, advancing preclinical neuroscience research.
  • This technology holds potential for future translation to human therapeutic applications.