I know the disappointment of having a study not give you the answers you need, but please don't give up on pursuing answers. It doesn't always come easy, but it is so worth the perseverence. You gave us the percent of time in different stages, but I didn't see the total sleep time. Unless you were able to sleep a statistically significant amount of time in REM while supine (the supposed worse case scenario), the study would be considered technically suboptimal, therefore not sufficient to unequivocally rule out or diagnose sleep apnea. There is something called UARS (Upper Airway Resistance Syndrome) that can be characterized by frequent arousals. I don't know how late in the day you take your ADHD med, but you could ask your doctor if it could have affected your outcomes that night. Any time our sleep stages are chronically out of balance it can cause symptoms that look a lot like narcolepsy, Hopefully the neuro visit will yield you some clarity. Approach this appointment with this attitude, "Okay, then what's next, because this is not an answer." Often a non-diagnostic test result is presented as the end-of-story or nets a script for symptoms unless the patient clearly communicates their expectations. Your test doesn't prove nothing's wrong, it merely states they were not able to tell you what's wrong based on this information. Best wishes in finding answers.