Related by context. Frequent words. (Click for all words.) 57 vocalizations 54 vocalization 50 cochlea 50 auditory 49 vertebrates 49 mammals 48 auditory cortex 48 nocturnal animals 48 photoreceptors 48 neural circuitry 47 sensory input 47 sonar 47 mirror neurons 47 noisy environments 46 visual cues 45 dragonflies 44 infra red 44 zebrafish 44 neuronal activity 44 olfactory bulb 44 vestibular 43 inner ear 43 Archaeopteryx 43 cilia 43 electromagnetic waves 43 pterosaurs 43 Mammals 43 synesthesia 43 neural circuits 43 magnetic fields 43 neurones 43 neural 43 pterosaur 42 birdsong 42 locomotion 42 visual stimulation 42 theropods 42 vowel sounds 42 visual stimuli 41 visual cortex 41 mammal 41 phonemes 41 tuning fork 41 brain circuitry 41 quantum mechanical 41 nonhuman primates 41 mockingbirds 41 verbal cues 41 neurons 41 infrared 41 harmonics 41 neural pathways 41 humans 41 narwhal 41 cetaceans 41 beaked whales 41 nonverbal communication 40 ultrasonic 40 baleen whales 40 facial expressions 40 circadian 40 laser beams 40 directionality 40 infrared radiation 40 profoundly deaf 39 infrared sensors 39 receptors 39 great horned owls 39 brainstem 39 synchrony 39 chickadee 39 resonators 39 Drosophila 39 infrared camera 39 neuroscientists 39 C. elegans 39 infrared cameras 39 sensory 39 circadian rhythms 39 Neurons 39 foraging 39 oscillations 38 tetrapods 38 electrophysiological 38 morphological 38 olfactory 38 electromagnetic radiation 38 instinctual 38 American Sign Language 38 vertebrate 38 basal ganglia 38 cochlear implants 38 propellers 38 dog barks 38 neurobiological 38 Neandertals 38 spatial 38 amplitudes 38 peripheral vision 38 strobe light 38 mammalian