Hi Dave,
I am fully aware of it happening, I can feel the need to automatically write "coming on" hence the ability to open a fresh Word document and have at it. I don't black out or go completely into a trance either, sort of suspended animation, with a few caveats. (When it happens when the kids come in to talk to me about something, they see I am "distracted" and leave the room and come back later. I am totally aware that they are there, and talk to them for a bit, usually to ask em to hold off for a few). That being said, I think you may have nailed it here, for the most part:
"If there's a distinction, some channels use what I call idea implants, where they channel a concept and then riff on it, putting the concept into their own words. Channels that use this technique tend to talk quite fast."
The idea gets planted, I get into a "suspended animation mode" and start to write. It all goes down and then I have to go back and correct what I have written as if there is a teacher standing there telling me "no no no, that wording is wrong". This can go on for an hour or so, or it can be a 15 minute thing.
I'm working on trying to tame it to a specific time of day as it does get annoying when I am in the middle of a heavily referenced psychology assignment. Heh
So its not just me, OK. Thanx for that :-)
Blessings
Nancy