nerve cell plasticity 71 human 70 Article 63 controlled study 57 male 50 adult 45 female 41 Humans 38 Reinforced plastics 35 physiology 33 nonhuman 31 Neuronal Plasticity 27 Fiber reinforced plastics 25 article 25 clinical article 25 animal experiment 22 Tensile strength 20 Animals 19 Male 19 Scanning electron microscopy 18 animal 18 learning 18 Plasticity 17 Plastics 17 Carbon fiber reinforced plastics 16 Female 16 plasticity 16 Fibers 15 Polypropylenes 15 Reinforcement 15