I have done a sleep study long time ago but using at home device my ENT recomended. No apnea was recorded. However, I know for a fact that sleeping on my back cause my jaw/toung to drop back causing me to snore which affect my sleep. But not enough to block breathing. I use an app to record my sleep and level of noise of associated with sleeping.

That said, I read there are other type of apnea which are associated with the brain not sending the appropriate signals to help you breath. Perhaps I should do another lab study.