Hello...
Although I haven't done a research I know there some cases where the conjunction of Rahu-Moon can give to the person a high level of mediumnity capacity. If so, it's interesting how it is connected to the Child Mind. And more often to women.
Does it also Rahu in Cancer?
I know a person with it. She has also Mars, Venus and Neptune in Scorpio. Moon in Sag. Jupiter in Aries.
In my experience, that holds true more or less. Not all Moon/Rahu are mediums of course, but many I've worked with have this combo. You can also research it on Astro.com. Just put 'mediums' in the search field.
Also had a close friend with Rahu/Moon and she was not a medium per se, but she could 'see dead people' and hear them too.
I can confirm this from nearby experience.
Staffan
In the Rahu/Ketu course Ernst talks about the difficulty of Rahu/Moon conjunctions but also says it can give "strong attunement" That can also be found in the Yogas section of Kala under Deliniations - Modern if the chart has a Rahu Moon conjunction or a rasi aspect.
I actually have Rahu Moon in my chart ruled by Sa and its def caused me trouble so far haha. It's taken me until Sa maturation year now to even realize how deluding it can be wrt Moon indications. I've had to deal with emotions I didn't even know existed within me for the past year and a half or so!
Getting to the topic at hand, I am kind of hesitant to wander into these things I do not know about. However, have noticed sometimes I've had a good meditation outdoors, I've seen a bunch of small dash like particles of light roaming around. I do not know, and I didn't actually engage with it, just admired and move on.
When I had a deeper meditation, I sometimes saw cylindrical spiral like particles with a narrow structure roaming around. I felt like they are thoughts that are in motion, but again I don't quite know. I guess it's the time to pray for peace and move on.