Related by context. Frequent words. (Click for all words.) 59 neuronal activity 58 neural pathways 58 oscillations 55 neurotransmitter serotonin 54 sensory stimuli 54 overactivity 54 neural circuits 54 brainwaves 54 external stimuli 54 synchrony 53 brain circuitry 53 synaptic plasticity 52 synaptic connections 52 EEGs 52 neural networks 52 REM sleep 52 visual stimuli 52 excitation 52 synapses 52 electrophysiological 52 subcortical 52 visual cortex 52 theta 52 synaptic 52 pulsations 52 neural mechanisms 51 hippocampal 51 sensory input 51 cortex 51 emotional arousal 51 nerve impulses 51 noradrenaline 51 stress hormones 51 autonomic nervous system 51 circadian rhythms 51 fMRI scans 51 pineal gland 50 dentate gyrus 50 amplitudes 50 neurochemical 50 sensory stimulation 50 myelination 50 cognitive functions 50 Cortisol 50 neural 50 electrodes implanted 50 oscillation 50 mammalian brain 50 synaesthesia 50 sensory organs 49 neural circuitry 49 parietal cortex 49 vibrational 49 neurotransmitter dopamine 49 basal ganglia 49 neuropeptides 49 muscle contractions 49 excitatory 49 neurophysiological 49 circadian 49 disinhibition 49 limbic 49 microelectrodes 49 hormone melatonin 49 biochemical processes 49 jerky movements 49 biochemical reactions 49 forebrain 49 serotonergic 49 neocortex 49 cognition 49 Brownian motion 49 wakefulness 49 astrocyte 48 electroencephalogram EEG 48 sensory nerves 48 vasodilation 48 neurotransmission 48 norepinephrine 48 frontal cortex 48 neurons 48 neurones 48 homeostatic 48 NMDA receptors 48 dopamine receptors 48 electrical impulses 48 cerebellar 48 neural connections 48 mirror neurons 48 physiological responses 48 Brain scans 48 contractility 48 Neurons 48 chemical messengers 48 behavioral abnormalities 48 auditory cortex 48 magnetic pulses 48 midbrain 48 dendritic spines 48 muscle rigidity 47 locomotor