NFTsim: Theory and Simulation of Multiscale Neural Field Dynamics
Fig 5
Schematic of the discretized spatial domain.
The model has two populations: Population 1 and Population 2. Geometrically, each population is represented by a grid of 12 nodes, which are labeled with integers. The grid is rectangular with dimensions 4 × 3 nodes. The number of nodes of the longest side is specified by Longside nodes. The physical size, Lx, of each population is different. Thus, each node in Population 1 has a linear size of Δx1, and of Δx2 in Population 2. Each spatial point (e.g., r1, r9, r11) is at the center of a grid cell. The subscript denotes the node index on this grid. Also, rn denotes the actual position in the largest population; in the smallest population rn denotes a rescaled physical dimension. Lastly, the borders of the grid are depicted with dashed lines to denote periodic boundary conditions (PBCs), which represent structures with planar geometry and toroidal topology.