Fig 7. Relationship between the number of PV immunoreactive neurons in different regions of hippocampus (A—CA1, B—CA2/3, C—DG) and the shortening the time to cross the beam in the EBW test (n = 8 per group).

Simple regression analysis indicated that the number of PV neurons in CA1 (F = 5.617, df = 1, Pearson's r = 0.40, p = 0.02) and DG (F = 9.621, df = 1, Pearson's r = 0.50, p = 0.004) was negatively correlated with the shortening of time to cross the beam. There was no significant correlation for CA2/3 region (F = 0.106, df = 1, Pearson's r = 0.06, p = 0.75).