This is a curiosity for me; my first study if you will. Scientists are discovering people with heightened senses. The most common you'll probably hear about are super tasters; that is, they have more than the average amount of taste buds, and can therefore make a finer distinction between tastes, and tetrachromacy; when the individual possess four color-receiving cones as opposed to the usual three, and therefore claim to see more obvious differences in color than others. Most scientists attribute this to evolution, so it would stand to reason that indigos, if we are next in the evolutionary process and not just a fluke of nature, would report a higher rate of heightened senses.
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I personally can smell and taste much finer than others, and I might have a slight increase in my hearing sense. I'm not sure about sight. I don't know if touch is changing as well, but I personally don't experience it, except that I'm colder easier, though this is likely due to my small frame.
I'm just curious if anyone else has every noticed that they can maybe see or hear better than their peers, or have any heightened senses at all, psychic abilities aside.