BME 4900 Final Report - Biomedical Engineering - University of ...

BME 4900 FINAL REPORT 15Team 8solution for the range of behaviors exhibited by each neuron population of interest. Asshown in Fig. 11 below, the “stock” design of this circuit is relatively simple and providesa train of action potentials at approximately 1000 Hz.Figure 11. The circuit schematic for “stock” 1000 Hz FitzHugh-Nagumo axon.12 below.The behavior of this model is displayed in the NI Multisim trace available in Fig.Figure 12. The NI Multisim trace for 1000 Hz FitzHugh-Nagumo axon.While this “stock” model functions properly for autonomously firing 1000 Hzneurons, some additional work is necessary to describe the desired physiologicallyaccurate neuronal populations. To encompass all of the desired neural behaviors of eachof these various populations, several modifications are necessary which directly impactthe firing rate. These modifications, while relatively simple in nature, allow for profound