human 109 Humans 75 male 60 Article 54 adult 48 article 48 controlled study 48 female 48 physiology 43 Action research 39 Animals 38 animal 38 action potential 35 Action Potentials 29 Male 29 nonhuman 24 human experiment 23 biological model 22 Models, Neurological 21 Female 20 clinical article 20 Neurons 17 Computational Biology 16 animal experiment 16 biology 16 mouse 16 nerve cell 16 perception 16 Adult 14 learning 14