Related by context. Frequent words. (Click for all words.) 63 brainwave 53 EEG 52 electrical impulses 51 brain 49 heartbeats 48 electrodes 48 fMRI 48 brains 47 arousal 46 electrical stimulation 46 auditory 45 neural networks 45 REM sleep 45 neural 44 moods 44 brain scans 44 facial muscles 44 robot 44 facial expressions 44 biofeedback 44 vibrating 44 accelerometer 44 cortex 44 twitch 44 functional magnetic resonance 44 brainstem 44 artificial intelligence 44 twitches 44 robotic 43 facial expression 43 imaging fMRI 42 wearer 42 beeps 42 wakefulness 42 vibrations 42 physiological 42 respiration 42 circadian rhythms 42 infra red 42 beep 42 electromagnetic 41 accelerometers 41 senses 41 pulse 41 heartbeat 41 laser beams 41 beeping 41 programmed 40 sensory 40 MRI scanner 40 cerebral cortex 40 cognitive 40 joystick 40 cognition 40 circadian 40 telepathy 40 impulses 40 tinnitus 40 gait 40 vibrates 40 perceptual 40 neuron 39 stimulator 39 stimuli 39 retinas 39 sexual arousal 39 physiologically 39 visual cues 39 subconscious 39 preprogrammed 39 electromagnetic waves 39 circuitry 39 bionic 39 electrocardiogram 39 neurons 39 stress hormones 39 twitching 39 frontal lobe 39 amplitude 39 haptic 38 cortisol levels 38 circadian rhythm 38 metronome 38 algorithm 38 cognitive functions 38 magnetic fields 38 Doppler 38 Wiimote 38 pheromones 38 robots 38 oxytocin 37 prefrontal cortex 37 motion sensing 37 gizmo 37 Cognitive 37 unconsciously 37 autonomic 37 endorphins 37 cortisol 37 synthesizer 37 oscillations