Horas
Which in Russian (sometimes a lot know bad).
Innerpulse American machine and basic session in her American.

Don't know, maybe Americans are sleep-well suited...

But theta with a work light and a sound is triggered, and the Delta in General so is not called. In General, the brain is much more going up than down.
However, any session causes mild trance state, consequently, strengthens intention, so Delta session for many people is working on the dream. Beta session with big debts to sleep cause diffuse inhibition of the cerebral cortex, which may be followed by sleep, but rarely installs a pretty bad state when simultaneously want to sleep and can't sleep, plus the heart rate increases, therefore it is not advised to use a beta session for sleep.
Most problems can be resolved using the alpha sessions as alpha waves correspond to a state of self-regulation and self-healing.