It's when they wire up your head and see what happens while you fail to sleep, as far as I know. I have never had one as my sleep problems lie more with an inability to sleep at the right times, rather than inability to sleep at all, which is the kind of problem for which your sarky git of a doctor mocks you roundly. Between ranting about laptops and posture.
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
ninetydegrees
no subject
on 2009-03-04 01:57 pm (UTC)