Here, we use a powerful neuron simulator called xolotl to demonstrate fundamental principles that define neuronal excitability. We didn't develop xolotl, nor do we maintain it. We can thank the lab of Dr. Eve Marder for supporting this effort. 

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At brain.how, we have simply developed exercises that tap into xolotl.

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This site and the xolotl exercises are maintained by Serapio Baca, Robbie Magill and Mark Beenhakker. As with most things, this is a work in progress.