Animals 12 nonhuman 12 article 11 behavior 11 hippocampus 11 Hippocampus 10 Male 10 Rats 10 Rats, Wistar 10 Time Factors 10 animal experiment 10 controlled study 10 male 10 rat 10 priority journal 9 Memory 8 Neuronal Plasticity 8 long term memory 8 protein synthesis 8 Exploratory Behavior 7 Spatial Behavior 7 exploratory behavior 6 learning 6 recognition 6 training 6 Behavior, Animal 4 Gene Expression Regulation 4 Recognition (Psychology) 4 animal 4 animal tissue 4