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Long-range Channelrhodopsin-assisted Circuit Mapping of Inferior Colliculus Neurons with Blue and Red-shifted Channelrhodopsins
Published on: February 7, 2020
Control of neural synchrony using channelrhodopsin-2: a computational study
Sachin S Talathi1, Paul R Carney, Pramod P Khargonekar
1Department of Pediatrics, University of Florida, Gainesville, FL 32611, USA. talathi@ufl.edu
Journal of Computational Neuroscience
|December 22, 2010
Summary
This study uses optical stimulation to achieve precise 1:1 in-phase synchrony in networks of channelrhodopsin-2 (ChR2) expressing interneurons. A novel closed-loop controller ensures stable synchrony despite network variations.
Area of Science:
- Computational Neuroscience
- Optogenetics
Background:
- Neuronal synchrony is crucial for brain function.
- Controlling neuronal networks with precision remains a challenge.
Purpose of the Study:
- To develop an optical stimulation method for inducing and maintaining 1:1 in-phase synchrony in coupled interneuron networks.
- To design robust open-loop and closed-loop control architectures for neuronal synchrony.
Main Methods:
- Modeling channelrhodopsin-2 (ChR2) kinetics under light stimulation.
- Defining a functional optical time response curve (fOTRC) for ChR2-expressing interneurons.
- Developing open-loop and closed-loop control strategies using light actuation.
- Analyzing spike time response curves (STRCs) for Type-1 neurons.
Main Results:
- Successfully induced 1:1 in-phase synchrony in unidirectionally coupled networks using an open-loop controller.
- Proposed a closed-loop controller architecture and algorithm for robustly sustaining synchrony.
- Demonstrated the controller's performance in mutually coupled interneuron networks.
Conclusions:
- Optical stimulation offers a viable method for precise control of neuronal network synchrony.
- The developed closed-loop controller ensures stable 1:1 in-phase synchrony in the presence of parameter deviations.
