Related by context. Frequent words. (Click for all words.) 74 cognition 73 cognitive abilities 73 cognitive function 73 cognitive functioning 72 cognitive 61 cognitive deficits 59 prefrontal cortex 58 cognitive decline 58 brain 58 cognitive impairment 57 glucose metabolism 57 hippocampus 56 perceptual 55 cognitively 55 cortex 54 neuronal 54 frontal lobe 54 synapses 54 impulsivity 53 neural 53 neurodegeneration 53 neurological 53 frontal lobes 53 neurotransmitters 53 neurons 53 dopamine 53 acetylcholine 53 cortical 53 mild cognitive impairment 52 psychiatric disorders 52 cerebral cortex 52 nerve cells 52 neurodegenerative diseases 52 cerebellum 52 visual cortex 52 physiological 52 neurotransmitter 52 plasticity 51 disorders 51 Alzheimer disease 51 auditory 51 dementia 51 neurological diseases 50 sensory 50 sleep disturbances 50 inhibitory 50 norepinephrine 50 serotonin 50 metabolic 50 synaptic 50 thyroid function 50 neurodegenerative disorders 49 dementias 49 mood disorders 49 lung function 49 circadian 49 schizophrenia 49 reading comprehension 48 neurodegenerative 48 developmental disorders 48 Cognitive 48 BDNF 48 brain scans 48 neurological disorders 47 autism spectrum disorders 47 circadian rhythms 47 brains 47 neurodegenerative disease 47 cortisol levels 47 neural networks 47 kidney function 47 amygdala 47 brainstem 47 stress hormones 47 neuroimaging 47 glutamate 47 irritability 47 insula 46 anxiety disorders 46 neuron 46 vascular dementia 46 metabolism 46 phenotypes 46 insulin sensitivity 46 Alzheimer 46 insulin resistance 46 alertness 46 Alzheimer disease AD 45 bone density 45 depressive symptoms 45 molecular mechanisms 45 abnormalities 45 oxidative stress 45 myelin 45 REM sleep 45 hyperactivity 45 physiologic 45 wakefulness 44 protein synthesis 44 leptin 44 neurobiology