I think this might be related to my Mercury conjunct Pluto very closely in scorpio, in the 6th. I assume pure obsession is related to pluto. My Mercury/Pluto also has a sextile to Neptune conjunct the 8th house cusp in Capri, maybe triggering these paranormal events or feelings.
I have a similar pattern, but involving different signs and houses. I have an exact Mercury-Pluto conjunction in Virgo (well, off by .01). It also sextiles Neptune in Scorpio, and there is a Uranus conjunction involved with Mercury-Pluto. The houses involved are the 7th and 9th.
YES, Mercury-Pluto will indicate obsession, but I'm not so sure it necessarily indicates any psychic ability. I won't say it doesn't, either, since you do have a different sign (and house) involved, but I'd expect that more from Pisces. In Virgo, my conjunction leads to my ability to research anything that interests me virtually to death. It's led to me getting a Ph.D. in my field. BUT Mercury-Pluto also leads to "obsession, deep study to the point of saturation, then extinction/transformation into a new interest." It's rather like the Diamond Vehicle of Buddhism, if you're familiar with that.
One might think Uranus has to do with my ability/tendency to "move on" from one topic to another, but really, I see that as Plutonian -- it's about eventual transformation when I'm satisfied with what I know. My interest doesn't *flit*, like Uranus would have it do. Rather the opposite. For a while, I am completely absorbed by whatever grabbed my interest, and by "a while" I mean as in *years*. But eventually, I'm done. And when I'm done, I'm DONE. I retain the knowledge, but not the obsession. Uranus gives my mind speed, and flashes of insight, but it can work against me as well, causing a mental "disconnect" between brain and mouth so that I literally forget common words in the middle of talking. It's sort of funny, and more annoying than a serious problem, but it's there. That's Uranian.
Neptune involved by sextile from the 9th gives me a good imagination, an ability to write/speak in inspiring ways, and the ability to write well period.
House placements account for what I study (as do signs, to some degree, but I see it more as houses).
So yes, obsession, but I've never noticed much in the way of psychic ability, to be quite honest. My family DOES have this ability in it, but I didn't inherit it.