Related by context. Frequent words. (Click for all words.) 60 neurotransmitter acetylcholine 60 excitatory 59 neuronal activity 59 sensory nerves 59 nerve impulses 59 synapse formation 58 AMPA receptors 58 presynaptic 58 Nerve cells 57 glutamate receptors 57 retinal ganglion cells 57 NMDA receptors 57 primary visual cortex 56 synaptic transmission 56 basal ganglia 56 auditory nerve 56 exocytosis 56 neural cells 56 mutant proteins 56 cell cytoplasm 56 forebrain 56 putamen 56 synaptic plasticity 55 dopamine neurons 55 electrical conduction 55 mu opioid receptors 54 noradrenaline 54 Wnt signaling 54 nerve cells 54 neurotrophic factors 54 neurones 54 T lymphocyte 54 somatosensory 54 midbrain 54 neuronal connections 54 dendritic spines 54 dopaminergic neurons 54 peripheral tissues 54 striatum 54 cytosol 54 cannabinoid receptors 54 endosomes 54 myocytes 54 contractile 54 neurotransmission 53 hypocretin 53 cholinergic 53 opioid receptors 53 spermatogenesis 53 melanopsin 53 neurotransmitter glutamate 53 serotonergic 53 osteoblast 53 neurotransmitter serotonin 53 neurochemicals 53 cytosolic 53 PrP 53 anterior cingulate 53 platelet activation 53 HPA axis 53 sensorimotor 53 olfactory bulb 53 spinal nerves 53 dentate gyrus 52 depolarization 52 potassium ions 52 neurotransmitter dopamine 52 inhibitory 52 chemical messengers 52 auditory cortex 52 dopamine neurotransmitter 52 transduction 52 vasodilation 52 histone modifications 52 secretory 52 methylation patterns 52 iNOS 52 neuropeptide 52 excitability 52 neurons 52 neural tissue 52 brainstem 52 medulla 52 CTLs 52 limbic 52 interleukins 52 contractility 52 sodium ions 52 hypothalamic 51 electroencephalography EEG 51 downregulation 51 amyloid proteins 51 neurotransmitter 51 dysregulated 51 Treg cells 51 parietal cortex 51 sensory neurons 51 dopaminergic 51 electrical impulses 51 cerebellar 51 neuronal cell