Another unplanned interruption!
The brain is whirring. I've got to think ! ...
I read a sci-fi story one time called Flowers for Algernon in which a man with an IQ of 60 went in for a psych experiment, did whatever treatment they were offering and his IQ zoomed up to 200. He wrote a research paper explaining everything that had gone on. Then the effect slowly wore away until he eventually went back to the limitations of his previous existence.
I've peaked a bit lower than that, but the tide is definitely receding about now.