So, the questionnaire could implicate two possibilities, whether you are having adequate REM phase
sleep. This can be interrupted, if you have
sleep disorders like obstructive
sleep apnea. OSA can also cause hypoxia. Another possibility is disorders related to dreaming could occur with REM sleep behavior disorders (trouble mares). Here the person acts out the dreams.
Good Luck with your sleep study.
Hope this helped and do keep us posted.