Bad news:
Fell asleep without turning the app on, so missed another night. (was trying to plan something out for my book, but fell asleep in the process)
Good news:
I took a look at the source code of the S+ sleep-tracker app, and it does indeed stream the sleep-stage data throughout the night.
What this means:
I should be able to eventually replicate that in the LucidLink app, letting users wire it up to trigger custom events on entering/exiting rem sleep. It also keeps track of breathing rate, and apparently, even heart rate! (It has code for heart rate tracking, though I wonder how accurate it is. I know I did look carefully at the real-time "breathing rate" graph a few times (before checking the code), and was indeed able to discern regular small bumps matching my heartrate, so I know it's possible -- though don't know how reliably that's picked up between sessions.)
As the S+ device's rem-detection has been quite good from what I've seen (almost always being accurate on whether I awoke from rem or non-rem, for example), this is fantastic news as it means we'll finally have an "open" and easy to use means of detecting rem sleep, without having to wear a headband or the like or pay for an overly expensive device. (I got mine for $23 on ebay, but it also sells new for $50 on amazon, which is not bad)
Hooked up to the user script system, we could then have lots of people experimenting with different ways of signalling to the user about their dreaming state, once they're known to be in one. (I'm pretty confident there is such a way -- we just haven't found it yet)
My current plan is to have it play a loud but brief "ding" -- the intention being to wake the person up each time, but have it be short enough that you can then fall back into the dream consciously. This was also basically my intention with the Muse headband, but as mentioned, I didn't like how it restricted my sleeping positions -- so this is considerably better for people with difficulties falling asleep (like me).
Anyway, it will probably be a while as the S+ app's code is more substantial than I expected. But it's definitely within reach, and I'm pretty optimistic some good things will come out of it.
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