Since there is a consistent positive correlation (r = 0.56, p < 0.001, n = 84) between object exploration in the NOE test and the “Number of head dips” (anxiety index) in the EZM test (see also [12]), these correlations indicate a negative relationship between anxiety and BDNF levels in the PFC and ACg, as well as PSA-NCAM levels in the vHPC. This evidence concerns the gene BDNF and Anxiety.