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It is also very interesting to look at the sorts of calculations that our brain makes through communication among neural regions, as these allow us to be aware of patterns and develop perceptions in relation to the input that our brains recieve. For instance, when we hear something, the vibrations of the sound enter our ear and vibrate in a location on the tonotopic map of our choclea. Our brain is able to register where the sound has come from, based on where it resonated in the chochlea, from which neural input signals were sent to the cortex. The power that the brain has to take information from sensory to cortical and present in the consciousness is incredible. In conjunction with this, as bkim stated, our brains' ability to make conscious deductions/reasoning from the physical efferent loops may give rise to cognition.