Adult Humans Young Adult female human 115 Female 113 Male 111 adult 109 male 109 controlled study 69 article 65 young adult 54 Adolescent 46 Middle Aged 44 priority journal 43 human experiment 41 Article 35 physiology 35 adolescent 34 normal human 31 Argentina 28 middle aged 26 clinical article 22 task performance 22 Magnetic Resonance Imaging 19 Photic Stimulation 19 functional magnetic resonance imaging 19 learning 19 Child 18 major clinical study 18