I agree that it is possible that the emotion of apparent "significance" can be attributed to many different things, none the least of which would be selective perception. Some even say it can be likened to mental instability; undetectable seizures in the frontal lobes or even shcizophrenia.
I hope that it isn't any of these. I hope it is a "gift from above" or such. Some aspect of our brains electric construction that has not been uncovered. A portion of heaven, in our heads.