Related by context. Frequent words. (Click for all words.) 66 neurochemicals 66 neurotransmitter acetylcholine 65 neurotransmitter 65 noradrenaline 65 Dopamine 64 dopamine 64 neurotransmitters 64 chemical serotonin 63 neurotransmitter serotonin 62 neurotransmitter dopamine 62 norepinephrine 62 dopamine receptors 62 Cortisol 61 serotonergic 61 Glutamate 60 chemical messengers 60 glutamate receptors 60 endocannabinoid system 60 serotonin 60 peroxisome proliferator activated 59 Serotonin 59 hormone cortisol 59 chemical dopamine 59 brain derived neurotrophic 59 Endorphins 59 releases endorphins 59 vasodilator 58 potentiate 58 acetylcholine 58 neurochemical 58 suppresses appetite 58 opioid receptors 58 N methyl 58 anandamide 58 homeostatic 58 excitatory 58 neuropeptides 58 neurotransmission 58 hypothalamic 58 glutamate 58 dopaminergic 57 Ghrelin 57 catecholamines 57 limbic system 57 PPAR gamma 57 serotonin receptor 57 anterior cingulate 56 eNOS 56 nucleus accumbens 56 protein kinase C 56 endocannabinoids 56 neuropeptide 56 reuptake 56 Arginine 56 NMDA receptors 56 vasopressin 56 endorphin 56 dysregulation 56 endorphins 56 overactivity 56 NMDA receptor 55 cannabinoid receptors 55 inhibitory 55 limbic 55 tyrosine 55 cholinergic 55 synaptic plasticity 55 superoxide dismutase 55 selectively inhibit 55 glucocorticoid 55 Oestrogen 55 Oxytocin 55 dysregulated 55 neuronal activity 55 proinflammatory 55 bile acid 55 voltage gated 54 GABA 54 MAPK 54 midbrain 54 cyclooxygenase 2 54 partial agonist 54 platelet activation 54 reductase 53 hypothalamus 53 Ca2 + 53 detoxifies 53 hypoxia inducible factor 53 adenosine 53 orexin 53 pharmacologically 53 oxidase 53 autonomic nervous system 53 intracellular calcium 53 sensory nerves 53 contains sildenafil 53 catalase 53 synaptic 53 cAMP 53 PDE5 53 secretory