Related by context. Frequent words. (Click for all words.) 66 stimuli 63 stimulations 58 sensory stimulation 58 stimulated 58 stimulating 58 stimulator 55 electrical stimulation 55 overstimulation 54 stimulates 53 visual stimulation 52 external stimuli 52 arousal 52 Stimulation 51 therapy 50 habituation 49 dopamine receptors 49 sensory input 49 physiologic 48 Stimulating 48 sexual arousal 48 muscle contractions 48 stimulate 48 excitatory 48 homeostatic 47 neuronal activity 47 vasopressin 47 dopamine 47 rTMS 47 stimulators 47 mental stimulation 47 inhibition 46 noradrenaline 46 socialization 46 physiological responses 46 cortex 46 autonomic nervous system 46 ambulation 46 intellectual stimulation 45 sensory neurons 45 satiation 45 NMDA receptors 45 physiological 45 aversive 45 analgesia 45 adenosine 45 excitation 44 thyroid hormone 44 glucocorticoid 44 limbic 44 cholinergic 44 secretion 44 kinesthetic 44 transiently 44 neuroprotection 44 neurochemical 44 inhibitory 44 neurotransmitter 44 neurotransmitter dopamine 44 orexin 44 sensory 43 sebaceous glands 43 auditory 43 norepinephrine 43 entrainment 43 androgen 43 cortisol 43 BDNF 43 endorphin 43 salivation 43 visual stimuli 43 nerve impulses 43 oxytocin 43 relaxation 43 electrical pulses 43 contractile 43 prolactin 43 nerve regeneration 43 stress hormones 42 vagus nerve 42 synaptic plasticity 42 serotonin 42 stimulatory 42 brain circuitry 42 prefrontal 42 nucleus accumbens 42 injections 42 neurons 42 dopamine neurons 42 cochlear 42 midbrain 42 implantation 42 nerve endings 42 cognitive 42 cortical 42 physiologically 42 constriction 41 oxygenation 41 thalamus 41 dissociation 41 brain stimulation 41 activation