Table 4.

Probability values of the comparisons between groups of arbors (Mann–Whitney U test)

	Total length (μm)	Coverage area (μm2)	Branch points (n)	Maximal density (μm/1000μm2)	High-density areas (μm2)
OD vs OND	↑0.02	↑0.003	ns	ns	ns
OD vs 6/7d-D	↑0.01	↑0.03	↑0.02	↑0.003	↑0.02
OND vs 6/7d-ND	↓0.001	ns	↓0.001	↓0.04	↓0.004
OD vs 6/7d-ND	ns	ns	↓0.03	↓0.03	ns
OND vs 6/7d-D	ns	ns	↑0.05	↑0.0002	↑0.006
OND vs normals P30	↓0.01	ns	↓0.05	ns	ns
OD vs normals P30	ns	ns	ns	ns	ns
OND vs normals P40	↓0.001	↓0.002	↓0.002	ns	↓0.05
OD vs normals P40	ns	↓0.05	ns	ns	ns
OND vs normal P49	↓0.002	↓0.002	↓0.002	ns	ns
OD vs normal P49	↓0.004	↓0.01	↓0.01	ns	ns

OD, Originally deprived; OND, originally nondeprived; 6/7d-D, deprived after 6/7 d of monocular deprivation; 6/7d-ND, nondeprived after 6/7 d of monocular deprivation; normals P30/P40/P49, normal arbors reconstructed in normal animals at postnatal day 30/40/49, respectively. Upward and downward arrows indicate whether the value of first term (OD or OND arbors) is significantly larger or smaller, respectively, than the second term of the comparison. Because the interest of this analysis was in the individual features of arbor development shown in each column, rather than in the significance of differences between groups, the values shown above are not corrected for multiple comparisons. However, all of the differences between groups, with the exception of OD vs normal P40, remain significant (p < 0.05) with the Bonferroni correction (Glantz, 1992). ns, Not significant.