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A Behavioral Screen for Heat-Induced Seizures in Mouse Models of Epilepsy
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Temperature effects on neuronal synchronization in seizures.

Rosangela Follmann1, Twinkle Jaswal1, George Jacob1

  • 1School of Information Technology, Illinois State University, Normal, Illinois 61790, USA.

Chaos (Woodbury, N.Y.)
|August 27, 2024
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Summary
This summary is machine-generated.

Elevated temperatures strengthen neuronal connections, increasing brain synchronization. This may explain how higher body temperatures can trigger seizure activity through outward-propagating synchronization waves.

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Area of Science:

  • Computational neuroscience
  • Biophysics
  • Neuroscience

Background:

  • Neuronal synchronization plays a critical role in brain function and dysfunction.
  • Seizures are associated with abnormal, hypersynchronous neuronal activity.
  • The influence of temperature on neuronal network dynamics, particularly in relation to seizures, remains incompletely understood.

Purpose of the Study:

  • To develop and analyze a computational model of networked neurons to investigate the impact of temperature on neuronal synchronization.
  • To explore the potential mechanisms by which elevated brain temperatures may induce seizures.

Main Methods:

  • A computational model of a square lattice network of chaotic bursting neurons surrounding a central tonic neuron was constructed.
  • Neurons were reciprocally coupled via temperature-dependent gap junctions.
  • Simulations were performed to observe network behavior under varying temperature conditions.

Main Results:

  • Increased temperature led to stronger gap junction coupling between neurons.
  • Higher temperatures significantly increased the likelihood of neuronal synchrony within the network.
  • Elevated temperatures induced waves of synchronization that propagated outwards in circular ripples from the network's center.

Conclusions:

  • Temperature-dependent gap junctions can promote neuronal synchrony in a networked model.
  • The outward-propagating waves of synchronization observed at higher temperatures offer a plausible biophysical mechanism for temperature-induced seizures.
  • This model provides insights into the role of thermal fluctuations in neurological disorders like epilepsy.