Table 4.

The pFRG/RTN network parameters remain unchanged for 21-DIV cultures. The results of correlation analysis for the pFRG/RTN are shown. Among the analyzed network parameters, only the number of active cells differed at the analyzed time points, and only between 14 and 21 DIV. N.S.: not significant. N: number of slices. Data are presented as mean ± SD.

DOI: http://dx.doi.org/10.7554/eLife.14170.045

pFRG/RTN	7 DIV (N=12)	14 DIV (N=11)	21 DIV (N=6)
Correlating cell pairs	118 ± 69	61 ± 31	74 ± 42	N.S.
Active cells	49 ± 26	41 ± 21*	76 ± 19*	*p<0.05
Correlations per active cell	3.1 ± 2.2	1.7 ± 1.1	1.0 ± 0.7	N.S.
Connectivity	0.7 ± 0.2	0.6 ± 0.2	0.7 ± 0.2	N.S.
Mean shortest path length (λ)	0.7 ± 0.2	0.7 ± 0.3	0.8 ± 0.5	N.S.
Clustering coefficient (σ)	2.7 ± 1.6	3.0 ± 1.7	4.5 ± 3.6	N.S.
Small-world parameter (γ)	3.6 ± 2.5	4.2 ± 2.6	3.3 ± 1.6	N.S