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Animal ability to process and respond to stimuli is correlated with brain size. Small-brain animals tend to show simple behaviors that are less dependent on learning than those of large-brained animals. Vertebrates, particularly mammals, have larger brains and complex behavior that changes with experience.
A possible but unexplored mechanism of magnetoreception in animals is through endosymbiosis with magnetotactic bacteria, whose DNA is widespread in animals. This would involve having these bacteria living inside an animal, and their magnetic alignment being used as part of a magnetoreceptive system.
Thus, the structure, distribution and mechanism of these sensory systems vary amongst different classes and species of aquatic animals and they also differ greatly to those of terrestrial animals. The basic functions of communication in aquatic animals are similar to those of terrestrial animals. In general, communication can be used to ...
However, animal behaviorist Temple Grandin argues that fish could still have consciousness without a neocortex because "different species can use different brain structures and systems to handle the same functions." [36] Animal welfare advocates raise concerns about the possible suffering of fish caused by angling. Some countries, such as ...
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This portion of the brain receives other sensory information as well, most notably optic stimulation, but also motor, proprioceptive and auditory. Some neurons in the tectum respond to visual or infrared stimulation alone; others respond more strongly to combined visual and infrared stimulation, and still others respond only to a combination of ...
Image credits: Sasha Weilbaker #4 Wind Blades. Humpback Whales are one of the largest weighing animals of the world, yet they are profound swimmers, which attributes down to its flippers (fins).
Electroreceptive animals use the sense to locate objects around them. This is important in ecological niches where the animal cannot depend on vision: for example in caves, in murky water, and at night. Electrolocation can be passive, sensing electric fields such as those generated by the muscle movements of buried prey, or active, the ...