Different sleep features will be predictive of different subtypes of Alzheimer's disease.

“when we do eventually subtype Alzheimer's disease we will then find that there are subsets of sleep features that are deterministic of those subsets of Alzheimer's so for example deep sleep will be predictive of one form of Alzheimer's sleep fragmentation which is more about sleep quality than it is about physiological quantity you know sleep fragmentation will be predictive of something else another sort of subtype of Alzheimer's disease then I think you know basic duration could matter”