I just learned that term today, but I guess so. I don't know how I generate words, they're just there. I type at about 120 wpm and speak very quickly as well, but as it's coming out I'm just flashing through different images in my head, often partial images from my own memory, and the words come out without paying attention to them, like out of a lower layer of consciousness. I write a lot of 300+ word messages at work, and it's just image after image firing in my head while the words appear.
I think I have a concept-image map in my head; to test it out, I'm thinking of random words, and very well-defined images are popping into my head. "Insurance" is the impression of slate grey followed by a view into a 90s corporate office room. "Propulsion" is the bell of one of the space shuttle engines firing on full, but not centered in frame. "Gravity" is one of the rooms in the Adler Planetarium in Chicago. Etc. But it's harder to go the other way; if I see an image or a drawing and have to describe what it is, there's more of a lag before I can retrieve the words to describe it. It's much easier to think of other related images.
I think I have a concept-image map in my head; to test it out, I'm thinking of random words, and very well-defined images are popping into my head. "Insurance" is the impression of slate grey followed by a view into a 90s corporate office room. "Propulsion" is the bell of one of the space shuttle engines firing on full, but not centered in frame. "Gravity" is one of the rooms in the Adler Planetarium in Chicago. Etc. But it's harder to go the other way; if I see an image or a drawing and have to describe what it is, there's more of a lag before I can retrieve the words to describe it. It's much easier to think of other related images.