ZEO users: How well does ZEO data predict daytime function?

patrissimo wrote:My sleep doctor thinks the Zeo is junk

On the other hand, my board certified sleep doc looks forward to reviewing my Zeo reports as an indication of how I've been sleeping.

In a different thread patrissimo wrote: My problem is fragmented sleep due to UARS, or something like that. I think if the Zeo says something is better, it is probably better for my sleep, even if it isn't fixing whatever is causing my chronic fatigue.

Here's an interesting study performed at Stanford on sleep fragmentation in mice:
http://med.stanford.edu/ism/2011/july/memory.html

And a succinct summary by Dr. Steven Park:

“The researchers figured out a way of fragmenting sleep in mice without causing any stress, using special lights to control genetically engineered brain neurons that control sleep and wake. By pulsing these cells with 10 second bursts of light, they could fragment sleep without significantly altering the quality and the composition of sleep, or the total sleep time.

Their conclusion was that “regardless of the total amount of sleep, a minimal unit of uninterrupted sleep is crucial for memory consolidation.”

http://doctorstevenpark.com/tag/memory-loss

I'm thinking the sheer number of awakenings and the total-time spent in mid-session awakenings might serve as a pair of useful Zeo correlates for some sleep-disordered patients---perhaps those presenting variability in memory impairment or dyscognition.

And to answer SU's question, my Zeo data tends to correlate well with my subjective impression of sleep quality. But it does not seem to correlate as well with my following-day performance. I believe that last statement relates to my daytime cognitive performance not always correlating well with sleep itself. As an example, I might experience daytime cognitive problems after a good night of sleep; alternately I might experience perfectly normal cognition after a three-hour night of sleep. There is some correlation, since episodic musculoskeletal pain tends to affect both sleep and daytime cognition. However, in absence of musculoskeletal pain problems, the correlation between my sleep quality and daytime cognition is weak at best. Go figure.