Related by context. Frequent words. (Click for all words.) 76 frontal lobe 73 prefrontal cortex 68 cerebellum 67 cortex 66 cerebral cortex 65 brain 59 brains 58 hippocampus 58 cortical 58 visual cortex 56 brainstem 56 amygdala 53 cognitive functions 52 thalamus 52 nerve cells 52 striatum 52 cognitive abilities 51 optic nerve 50 cognitive 50 neurons 50 cognition 50 neuronal 49 neural 49 synapses 48 insula 48 hypothalamus 48 retina 47 nerve fibers 47 synapse 47 axons 46 neuron 46 cognitive functioning 46 macula 46 synaptic 46 auditory 46 inhibitory 46 axon 46 cognitively 46 cochlea 46 retinas 45 pancreas 44 impulsivity 44 nerve endings 44 cognitive deficits 44 blood vessels 44 dorsal 43 lobe 43 spinal cord 43 myelin 43 dopamine 43 hair follicles 43 lobes 43 plasticity 43 facial muscles 42 motor neurons 42 subconscious 42 perceptual 42 nonverbal 42 sensory 41 eye sockets 41 eardrum 41 reproductive organs 41 skull 41 serotonin 41 pituitary 40 cilia 40 skeletal muscle 40 internal organs 40 glucose metabolism 40 neural networks 40 ventricles 40 astrocytes 40 cranial 40 BDNF 40 cognitive function 40 left ventricle 40 neurological 40 schizophrenics 40 molars 39 follicles 39 dendrites 39 fatty tissue 39 circuitry 39 developmentally 39 neurotransmitter 39 photoreceptors 39 amyloid beta 39 pituitary gland 39 REM sleep 39 imaging fMRI 39 amyloid plaques 39 brain scans 39 cerebral 39 vasculature 39 cortisol levels 39 adrenal glands 39 fibroblasts 39 epidermis 39 testes 38 muscle tissue 38 endothelium