How long has she been having these episodes? I would take her to the vet. An exam and some lab work, and other diagnostic tests should lead to a diagnosis and treatment options.
I wouldn’t wait till it happens again as I would be concerned it will occur when you are not around, dogs have been known to ingest rug remnants and other things that could be toxic and require emergency treatment/surgery.
If it’s neurological there are medications that will prevent the episodes and keep the dog comfortable, it doesn’t change the dog’s personality or make the dog drowsy.
