NGFR and Anxiety: The hippocampus and the cerebellum are both involved in anxiety behaviors (Bannerman et al., 2004; McHugh et al., 2004; Engin and Treit, 2007; Phillips, 2015; Moreno-Rius, 2018), therefore the elevated anxiety observed only in the conditional p75Atoh1-Cre might be due to developmental defects in the hippocampus induced by the deletion of p75NTR after Atoh1 is expressed.