Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).
When you say “blinks” do you mean rapid eye movements that are indicative of REM sleep?
I want to believe so. I have found that there are three distinct types of eye movements.
1.) Flutters, the conventional rapid eye movements – that last around 100 milliseconds and occur a few times a second:
2.) Blinks, that last for up to 1.5 seconds and occur every few seconds:
3.) Ticks, or fast blinks, that last for 100 milliseconds and occur every few seconds:
Are all three of those graphs taken from your actual sleep recordings?
Yes, as are 99% of the recordings in the database.
Reason I ask is that I believe the first graph is indicative of true REM while the latter two are showing some kind of artifact activity. Rapid Eye Movement in dream sleep is very sporadic/random and does not follow a set tempo. Here’s a good example of how REM looks (LOC & ROC show eye activity; electrooculogram):
Since those “blinks” in your 2nd and 3rd frames are occurring exactly every few seconds and lasting longer than an instant, I would believe it’s artifact from breathing.
If your wires on the Halograph/actograph set-up don’t have enough slack while you are laying down, this could cause “respiratory” artifact in the reading because your body is pulling on the wires each time you inhale or exhale.
I used to be a polysomnologist (sleep technologist) and I saw this artifact pretty often. I could be wrong, but if I’m right then it should help you avoid false positives.
Wow. Thanks! That would also explain the vibrations I have been seeing as simply rolling into the position in which the wires don’t have enough slack.
I will focus my attention on the true eye movements and retrain the algorithms to detect them more selectively. Thank you for the advice – you have probably saved me a good year of research.
Glad to help out however I can. If the respiratory artifact continues, I can explain a few tricks to avoid them.
By the way, what’s your main email address?
That would be great. It might even be of value to include an optional wire as a plug-in to always pick up the respiratory artifact for those interested in monitoring the breathing patterns throughout the night?
My main account is mcoder at the lucid-code.com domain.
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