Related by context. Frequent words. (Click for all words.) 74 cerebellum 68 cortex 67 visual cortex 66 temporal lobe 65 brain 65 cerebral cortex 64 basal ganglia 63 cortical 62 neurons 62 thalamus 62 frontal lobe 60 neurones 59 nerve cells 59 neural 59 sensory input 59 prefrontal cortex 58 optic nerve 58 neural circuits 57 frontal cortex 57 neuronal 57 brain circuitry 57 autonomic nervous system 57 neocortex 57 Neurons 56 hippocampus 56 hypothalamus 56 neuron 56 frontal lobes 56 cochlea 56 motor cortex 56 optic nerves 55 amygdala 55 neural pathways 55 synaptic 53 ventral 53 vagus nerve 53 striatum 53 adrenal gland 53 motor neurons 52 auditory 52 synapses 52 REM sleep 52 insula 52 visual stimuli 52 glial cells 52 nerve endings 52 skeletal muscles 51 testis 51 nerve fibers 51 vasculature 51 photoreceptors 50 cerebrospinal fluid 50 blood vessels 50 electrical impulses 50 synapse 50 cilia 50 astrocytes 50 neuroendocrine 50 inhibitory 49 spinal cord 49 retina 49 salivary glands 49 nasal cavity 49 nucleus accumbens 49 ventricles 49 neurogenesis 49 mitochondria 49 duodenum 48 nerve impulses 48 synchrony 48 glutamate 48 cognition 48 neurologically 48 pituitary 48 dopamine 48 skeletal muscle 48 signaling molecules 48 retinas 48 abnormalities 48 gene encoding 48 brains 47 adrenal glands 47 epithelium 47 neural networks 47 electrical pulses 47 peripheral nerves 47 macula 47 thyroid gland 47 axons 47 circuitry 47 cognitive functions 47 norepinephrine 47 glucose metabolism 47 pituitary gland 47 cognitive 47 nonverbal 47 retinal cells 47 vestibular 46 perceptual 46 alpha synuclein 46 pancreas