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Score: Active vs Quiet Wake. #299

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dlevenstein opened this issue Feb 28, 2019 · 12 comments
Open

Score: Active vs Quiet Wake. #299

dlevenstein opened this issue Feb 28, 2019 · 12 comments
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@dlevenstein
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This has been on the potential to do list for a while and I'm thinking about implementing it.... First pass would be to use the theta threshold from REM to divide active/quiet wake. Anyone with thoughts?

@dlevenstein
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Bottom right plot shows the occupancy heat map for the non-NREM time..... notice that the wake cloud is continuous, but could be potentially divided by the same threshold that separates out REM.

I could add this in as an option to try out and see how it goes?

@brendonw1 ?

screenshot - 02282019 - 03 18 22 pm

@AntonioFR8
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AntonioFR8 commented Feb 28, 2019 via email

@dlevenstein
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The theta used by SleepScoreMaster is (5-10Hz)/(2-20Hz).
("narrowband theta" above, we found that to be more reliable than theta/delta, because it's isolated narrowband theta on both sides, Gervasoni did something similar)

SSM doesn't use accelerometer because it's not available in all recordings, but the EMG signal is pretty good (see above, bottom right panel). It's not cleanly bimodal, but it looks like the threshold from REM could be used.

@dlevenstein
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The only frustrating thing is the small v high EMG mode, which tends to be associated with microarousals, but is not present in all recordings

@AntonioFR8
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AntonioFR8 commented Feb 28, 2019 via email

@brendonw1
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brendonw1 commented Feb 28, 2019 via email

@dlevenstein
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Definitely state 2, though I think in the StateScore output I'd make it QWake or QuietWake or something like that? Not sure I'd like to commit to the animal being drowsy.

Plan is to make it a checkable box in TheStateEditor and input option in SleepScoreMaster (default: false, for now)

@dlevenstein
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Re: accelerometer - at this point, the SSM is well optimized for the LFP-derived EMG signal and it works well. I'd rather not go through the process of optimizing it for another optional signal which will have different statistics (for example, may not be so cleanly bimodal (middle left panel above) but may have a heavy tail). We think the EMG likely reflects muscle tone in stabilization muscles as well as movement, so it's very good for REM/NREM/MA segregation in a way that the accelerometer may or may not be.

@brendonw1
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Sorry I didn't mean to call it drowsy... I agree I wouldn't... was just specifying what it has been called as a name. I think QuietWake would be good

@dlevenstein
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dlevenstein commented Mar 1, 2019 via email

@brendonw1
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brendonw1 commented Mar 1, 2019 via email

@dlevenstein
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Manu has gotten this to work - we'll work together to integrate into SleepScoreMaster

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