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Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
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Toolkit for Oscillatory Real-time Tracking and Estimation (TORTE).

Mark J Schatza1, Ethan B Blackwood1, Sumedh S Nagrale1

  • 1University of Minnesota, Minneapolis, MN, USA.

Journal of Neuroscience Methods
|November 17, 2021
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Summary

Researchers developed a Toolkit for Oscillatory Real-time Tracking and Estimation (TORTE) for neuroscience. This open-source tool enables accurate, real-time estimation of neural oscillations, facilitating closed-loop experiments and improving research reproducibility.

Keywords:
Analytic signalClosed-loopOpen-sourceOscillationsToolkitTranslational

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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Systems Neuroscience

Background:

  • Establishing causal links between brain activity and behavior is crucial in neuroscience.
  • Closed-loop control of neural oscillations is a key area of research.
  • Accurate real-time estimation of oscillatory phase and amplitude is essential but challenging.

Purpose of the Study:

  • To develop a novel, efficient, and accurate toolkit for real-time tracking and estimation of neural oscillations.
  • To facilitate closed-loop experiments by providing tools for precise phase and amplitude estimation.
  • To enhance the accessibility and replicability of oscillatory closed-loop experiments.

Main Methods:

  • Development of the Toolkit for Oscillatory Real-time Tracking and Estimation (TORTE).
  • Integration of TORTE with the open-source Open Ephys GUI (OEGUI) system.
  • Implementation of TORTE for efficient extraction of oscillatory phase and amplitude with minimal latency.

Main Results:

  • TORTE accurately extracts oscillatory phase and amplitude from neural signals.
  • The toolkit offers versatile options for triggering closed-loop perturbations.
  • TORTE integrates seamlessly into existing experimental protocols with minimal added latency.

Conclusions:

  • The availability of TORTE, an open-source and broadly applicable toolkit, is expected to increase the number of labs performing closed-loop experiments.
  • TORTE promotes improved replicability of protocols and data across different research groups.
  • This toolkit offers a flexible, user-friendly alternative to proprietary software for oscillatory analysis.