Fig. 5.

Voronoi analysis in pyramidal layer. a A micrograph of neurons and schematic of Voronoi tessellation in the hippocampal pyramidal layer for control and COVID-19 groups. b The most distribution of Voronoi polygon area is in the range 80–100 µm². c Mean ± Standard deviation of Voronoi polygon area in both groups, d Coefficient of Variation (CV) of distribution of neurons within the hippocampus, e number of neurons per mm² of hippocampus. Asterisk (*) shows the difference between the COVID and the control group (*P < 0.05; **P < 0.01; ***P < 0.001). The values were expressed as means ± SEM. The values were expressed as means ± SEM