While waiting to get the stage data working on my new Zeo EEG headband, I noticed a few interesting hikes in the BPM right before some electrical activity like in the minute below that could be a starting point for the heartbeat algorithm:
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This pattern is sometimes interrupted – by movements, bad sensor readings and dreams perchance:
I woke up at 0308 when the electrode gel dried up and triggered a string of false positives from the OpenEEG channel. I stayed up for 30 minutes for some Choline and Galantamine and was plagued by numerous false awakenings over the next 3 hours. I also tried out a EV-806A tENS unit at 40 Hz on Fp1 and Fp2 for a few minutes before sleep.
The BPM channel (grey) sometimes climbs of its own accord – that might be the first place to start looking:
in every change in direction I had a short period of time of stillness.
the axis cannot retrieve the right orientation due to the position of the sensor, which is calibrated for staying in plane on a table. so looking up/down doesn’t mean an Y movement, for example.
A dot is a gentle blink, so that the NeuroSky EEG channel spikes above 500, but below 900. A dash is more of a frown, or wink or raising of the eyebrows so that the NeuroSky EEG channel spikes above 900. To practice, reference the International Morse Code chart. Start with some E’s (dots) and then a T (dash). Then say SOS and finally CONSCIOUS.
I caught that feeling you get when you are startled awake by an intense falling sensation on file again, this time with EEG. At 0052 I was still awake and making sure the audio tracks were triggering, then at 0101 I twitched awake and checked the time.
The minute above shows the episode – the first spike was the twitch and seems to have flat-lined the channel for a few seconds. The rest of the movements are from me checking the time and settling again.
Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV). The CSV file doesn’t contain the RAW channel – it was running at 256 Hz and the CSV export doesn’t work for the illuminated plugins yet. I will fix that in one of the next updates.
The first printout that I recorded last night, 5 minutes past midnight, shows the strained beats picked up by the halograph FM. The fREM channel can be seen counting up each blink or strained beat that peaks over the top line and then triggers the next track in the playlist after the 8th blink.
And the second printout, recorded at 0017, shows the same thing happening with the OpenREM channel from the OpenEEG electrodes.
This will make it a lot easier to perfect the algorithm by highlighting where it was thinking about triggering. The tracks at 0618 made it into the dream and helped me stave off a hoard of zombies, but didn’t trigger lucidity…
The first minute, 0143, shows a pattern that I have seen many times: a sequence of heartbeats where every third beat is three times as strong as a normal beat, 12 of which can be seen below. I have begun to suspect that this may be a phenomenon that only occurs in male subjects. Note that the EEG channels flatline.
Moving on, two and a half hours later at 0408 there are two such beats right before the onset of a marathon REM session that lasted half an hour.
And peaked with eye movements like this at 0412:
Only to end again with some strained beats at 0450. No idea what to make of that spike on channel 2, it seems to pop up quite regularly.