Fig. 2 | Nature Communications

Fig. 2

From: A hierarchical anti-Hebbian network model for the formation of spatial cells in three-dimensional space

Fig. 2

Emergence of 3D place cells and their isotropic nature. a Figure, from left to right, shows the snapshots of the temporal evolution of the localized volumetric 3D place-cell firing field of a LAHN neuron that resembles the empirically reported 3D place cells. Iteration number (Itr) is given above each box. be show the rate maps of four example 3D place cells from the trained model, overlaid on the flight trajectory traversed by the animal (gray lines). It is evident from the figure that the place cells code for different regions of the space. f The distribution of the elongation index of the fitted ellipsoids results in similar values to those observed empirically in freely flying bats18. Elongation index is the descriptor of the isotropic nature of the firing map. The Gaussian curve fitted to the distribution (red curve) mainly shows the emergence of isotropic nature of place cells from the model (mean (μ) = 1.3042, standard deviation (s.d.) = 0.2179). Approximately 65% of place cells from the model exhibit isotropic place fields

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