male controlled study 180 Male 154 article 144 nonhuman 140 animal experiment 130 learning 114 priority journal 114 Animals 108 female 90 Memory 86 memory consolidation 86 adult 74 human 72 physiology 68 Female 62 long term memory 62 memory 60 Humans 56 crab 56 Learning 54 Article 52 animal 50 rat 46 Avoidance Learning 42 Brachyura 42 hippocampus 42 Hippocampus 40 task performance 40 training 40