Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

The thalamus helps to regulate consciousness, arousal, and sleep states.
What helps to regulate consciousness, arousal, and sleep states?

Does water get colder or warmer the deeper you go?
Does water get colder or warmer the deeper you go?

With vibrating charged particle does an electromagnetic wave start.
With what does an electromagnetic wave start?