Aged 1 Alzheimer Disease 1 Alzheimer's disease 1 Clearance 1 Degeneration 1 Diseases 1 Emotions 1 Geriatric neuropsychiatry 1 LDL receptors 1 Mild Cognitive Impairment 1 Molecular aspects 1 Nervous System Diseases 1 Nervous system 1 Neurodegenerative Diseases 1 Neuroimaging 1 Neuropsychiatry 1 Neuropsychological Tests 1 Neuropsychology 1 Neurosciences 1 Parkinson Disease 1 Pathogenesis 1 Physiopathology 1 Proteases 1 Research 1 Signal Transduction 1 amyloid-beta 1 graph theory 1