Table 1. Summary of model parameters and variables.
| Symbol | Significance |
|---|---|
| Morphological Parameters | |
| α | Axon rigidity |
| β | Axon external attraction |
| Δρ | Step size |
| ψ | External attractive field |
| Pb | Branch point generation probability in tj |
| ω | Branch initial angle distribution |
| λb | Poisson parameter for branch distance |
| bl | Maximum branch order |
| d | Axon diameter |
| Numax | Number of axons |
| Dynamic Parameters | |
| nmax | Maximum number of steps grown in tj |
| nr | Retraction rate |
| countermax | Maximum value of trials upon interaction |
| Spatial Parameters | |
| Xmax | Maximum traveled distance |
| ξ | Growth cavity |
| Variables | |
| tj | Time point |
| ϕi | Step angle |
| θi | Model angle variable |
| counter | Number of trials upon interaction per growing tip |