Central sleep apnea
In this type the throat is open; for a while the brain does not send the command to breathe.
A little more detail
Defined by apneas in which respiratory effort is also lost because the respiratory centre temporarily stops sending signals. Heart failure (Cheyne Stokes breathing), opioid use and high altitude are common causes.
Source: Eckert DJ, Jordan AS, Merchia P, Malhotra A. Central sleep apnea: pathophysiology and treatment. Chest. 2007;131(2):595-607. doi:10.1378/chest.06.2287