Recent studies show that the earliest mammals complex brains evolved in stages. Of all the regions in a mammals brain, smell was the first to develop. Researchers say that these early mammals used there sense of smell to exploit the world they lived in. This enlargement of the smell sensing part of the brain is directly correlated with parts of the brain that deal with touch sensitivity from body hair and parts that increase movement. Among many other mammals humans have traded in somOriginal Story Here of there ability to smell with improved vision and hearing. Though many mammals such as dogs still carry this trait. This study is said to provided the first concrete evidence of the stages of mammalian brain evolution. Due to the fact that this study involves early mammals they believe that these mammals most likely were active at dusk and night and heavily required on smell and tactile senses. Also hearing would have been very important to these mammals. This idea of how the brain of mammals developed has really taken the interest of many scientist. They hope studies like this can one day lead to the creation of robots that have the ability to smell which is crucial for many safety purposes!
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