The Dynamics of a Type 1-Type 2 Switcher and the Effects of Noise




Davis, Gracie

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The effects of noise on firing behavior are studied but poorly understood when it comes to changing how a neuron may change its firing behavior. To better understand it, a model based off the Connor-Stevens model was built and tested over several of its features. The first were the fI curves of type 1 and type 2 behavior and the switch the model makes between them. Next, noise was added to test if the differences in firing behavior held up. The hypothesis that type 2 would exhibit type 1-like behavior under a noisy input current. This was confirmed through the fI curves. Next, the resonant behavior of the model was tested. Type 2-like behavior was expected to have more resonant behaviors than type 1 behavior. Again, the resonant models were subjected to noise. Resonant behavior was quantified and analyzed under noisy and non-noisy environments. Studying the changes between these two types of behavior and how it affects their firing properties is important because it gives us greater insight to how neurons communicate with each other and make sense of signals in a noisy environment.


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bifurcations, noise, resonance, Type 1, Type 2



Integrative Biology