Related by context. Frequent words. (Click for all words.) 59 basal ganglia 58 nucleus accumbens 58 prefrontal cortex 57 frontal cortex 57 dopamine receptors 57 cortex 57 neuronal activity 56 brain circuitry 56 neurotransmitter dopamine 55 amygdala 55 arousal 55 hippocampus 55 limbic system 55 dopamine 55 frontal lobes 54 striatum 54 hippocampal 53 frontal lobe 53 sexual arousal 53 neural circuits 53 neurochemical 53 neural circuitry 53 attentional 53 chemical serotonin 53 skeletal muscles 53 cortical 52 brainstem 52 neocortex 52 chemical dopamine 52 brain 52 neural 51 glucose metabolism 51 visual cortex 51 cerebellum 51 vasopressin 51 autonomic nervous system 51 physiological responses 51 insula 51 stress hormone cortisol 51 cognition 50 habituation 50 stress hormones 50 dopaminergic 50 Dopamine 50 impulsivity 50 impulsive behavior 50 hypothalamus 50 cerebral cortex 49 ghrelin 49 dopamine neurons 49 substantia nigra 49 NPY 49 thalamus 49 neural pathways 49 temporal lobe 49 excitability 49 plasticity 49 dysregulation 49 inhibitory 49 norepinephrine 48 serotonin 48 imaging fMRI 48 nerve cells 48 neurotransmitter 48 BDNF 48 ventral 48 visceral fat 48 neurons 48 mirror neurons 47 cognitive functions 47 external stimuli 47 cortisol levels 47 alpha synuclein 47 Cortisol 47 cognitive functioning 47 Brain scans 47 auditory cortex 47 muscle contractions 47 glial cells 47 cognitive 46 stimuli 46 electrical stimulation 46 orexin 46 neural networks 46 brain shrinkage 46 visual stimuli 46 physiological 45 stimulation 45 wakefulness 45 synaptic 45 REM sleep 45 neurotransmitters 45 cortisol 45 neurones 45 synapses 45 electrophysiological 45 neurobiological 45 oxytocin 45 addictive behaviors 45 motor cortex 45 sensory input