precuneus 45 human 44 male 40 female 39 adult 35 controlled study 35 Article 32 Humans 31 functional magnetic resonance imaging 30 nuclear magnetic resonance imaging 30 diagnostic imaging 27 Magnetic Resonance Imaging 26 Male 22 Female 21 functional connectivity 20 posterior cingulate 19 nerve cell network 17 Adult 16 clinical article 16 brain cortex 15 physiology 15 brain 14 major clinical study 14 Cerebral Cortex 13 young adult 13 Brain 12 Young Adult 12 article 12 human experiment 12 Nerve Net 11