Related by context. Frequent words. (Click for all words.) 59 neuronal activity 54 restlessness 54 wakefulness 53 glucose metabolism 53 insulin secretion 53 involuntary movements 52 neurotransmitter dopamine 52 serotonin 52 inhibitory 52 dysregulation 52 overactive 52 alertness 52 irritability 52 Cortisol 51 motility 51 secretion 51 impulsiveness 51 norepinephrine 51 glucocorticoid 51 neurotransmitter 51 thyroid hormones 51 cAMP 50 dopamine 50 synaptic 50 GABA 50 sleep disturbances 49 circadian rhythms 49 dopaminergic 49 metabolism 49 glutamate 49 autonomic nervous system 49 basal ganglia 49 cognition 49 Dopamine 49 cortisol levels 49 systemic inflammation 49 arousal 49 stress hormone cortisol 49 external stimuli 49 vocalization 49 inhibition 49 attentional 49 stress hormones 48 cortisol 48 airway inflammation 48 acetylcholine 48 aldosterone 48 vasopressin 48 BDNF 48 moodiness 48 orexin 48 daytime sleepiness 48 neurochemical 47 hyperactivity 47 skeletal muscles 47 thyroid hormone 47 cognitive functioning 47 neurogenesis 47 brain circuitry 47 chemical dopamine 47 mutant mice 47 hyperactive 47 sleepiness 47 impulsive behavior 47 cerebellum 47 plasticity 47 glucose tolerance 47 twitches 47 circadian rhythm 47 sensory perception 46 striatum 46 hippocampal 46 Serotonin 46 neurotransmitters 46 inflammatory markers 46 neural circuitry 46 disorientation 46 AMPK 46 impulsivity 46 inflammatory cytokines 46 circadian 46 neuroendocrine 46 neuronal 46 thyroid function 46 mental alertness 46 prostaglandins 46 sensory input 46 leptin 46 auditory 46 insulin sensitivity 46 muscle contractions 46 REM sleep 46 repetitive behaviors 46 pharmacologically 46 limbic system 46 hormonal 46 salivary glands 46 ghrelin 45 protein synthesis 45 adrenal 45 chemical messengers