Yesterday, Yuriko told me I’d been talking in my sleep. Apparently, I told her that there was a blue light inside the light in our bedroom. When she said that, I remembered saying it, and seeing the light. It was like a bit of blue lightning, moving around inside the lampshade.
Of course, the really significant thing is that Yuriko told me that I told her that in Japanese. And, although communication was apparently a little difficult, I successfully told her what I wanted to say.
Thus, I can now, in all honesty, claim to be able to speak Japanese in my sleep.