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Related Experiment Video

Updated: Jul 4, 2025

Two-photon Calcium Imaging in Neuronal Dendrites in Brain Slices
10:35

Two-photon Calcium Imaging in Neuronal Dendrites in Brain Slices

Published on: March 15, 2018

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Seizure event detection using intravital two-photon calcium imaging data.

Matthew A Stern1, Eric R Cole1,2, Robert E Gross1,2

  • 1Emory University School of Medicine, Department of Neurosurgery, Atlanta, Georgia, United States.

Neurophotonics
|January 26, 2024
PubMed
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This study presents an automated algorithm for detecting seizure events using calcium imaging. The new method accurately identifies cell recruitment and seizure wavefronts, aiding epilepsy research.

Area of Science:

  • Neuroscience
  • Computational Biology

Background:

  • Intravital cellular calcium imaging offers insights into neuronal microcircuitry and seizure activity, crucial for understanding epilepsy.
  • Traditional electrophysiology methods for seizure activity are abundant, but calcium imaging methods are limited.

Purpose of the Study:

  • To develop an automated algorithmic framework for detecting seizure-related events using calcium imaging.
  • To enable detection of pre-ictal spike events, seizure wavefront propagation, and terminal spreading waves at both population and single-cell levels.

Main Methods:

  • Developed an algorithm for precise recruitment detection of population and individual cells during seizure events.
  • Leveraged averaged population activity and high-magnitude slope features for detecting single-cell pre-ictal spike and seizure recruitment.
Keywords:
electroencephalographyepilepsygenetically encoded calcium indicatormultiphotonoptical imagingsignal processing

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  • Applied the algorithm to awake in vivo two-photon calcium imaging data during pentylenetetrazol-induced seizures in mice.

    • Main Results:

    • Demonstrated concordance between algorithm-detected recruitment times and expert visual labels.
    • Showed sufficient accuracy to model the spatiotemporal progression of seizure-associated traveling waves.
    • Validated the algorithm's ability to detect cell recruitment during seizures.

    Conclusions:

    • The developed algorithm enables accurate cell recruitment detection during seizure dynamics.
    • This tool is valuable for researchers utilizing calcium imaging to study epilepsy and neuronal network activity.