My sister is a somniloquist- shebabbles in her sleep.
A somniloquist is someone who talks in their sleep. A somnambulist is someone who walks in their sleep. roots: somni (sleeping) loqui (speaking) ambu (movement) or something to that effect, hope this helps :]
Somnambulist ; somniloquist ; insomnia
The term used is "somnambulism" (Latin. literally sleep walk), and is a medical andpsychological condition wherein the person is up and active, but usually has no conscious memory of these periods of activity. They are not technically "still asleep", but have aroused from deep (slow wave) sleep into a semi-conscious state.