It sounds a bit like a form of sleep paralysis, which your medication may be heightening the frequency and/or lucid effects of. I understand because it sounds similar to something I once dealt with. I haven't taken any meds but I used to experience very intense lucidity and paralysis. I would be in the same room where I didn't know if I was asleep or awake, or perhaps I had fallen under just briefly, but I would swear I'd maybe just seen my brother enter the room or something else that couldn't happen actually happen. But i couldn't get up from where I was watching him and he would seem not to see me even though I was right in front of him. Then I would jolt up and I would see I am alone in the room I thought I wasn't alone in. I began to get very afraid to fall asleep in the day by myself for fear I might be ambushed or caught offguard. I live alone now though and I don't fear someone coming in if I fall asleep in the day. It is something to mention in your appointments. Perhaps you are experiencing visual side effects it would be helpful to address. You might also learn from what you see during these spells you have at the same time...