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I was able to record eye movements with the camera on the bedside table next to me!
The headband still records more dreams as it trains the camera on your eyes as you move around throughout the night, but is a challenge to sleep with for the casual user. And this setup brings the cost down by 100 and hopefully clears the way for more research!
Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).
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Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).
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I have had a few inquires about using the setup without the headband and this shows that it could work if you can sleep close enough to the night-table or have the camera mounted above the bed somehow. I will try to record a session like that one night…
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I now have an infrared LED shining down on me from a cupboard… and the recordings have been out of this world! Gone are the dark ages with just a few squiggly lines of questionable EEG signal quality.
The latest version of the Halovision plugin records an image-stream of any movements and Lucid Scribe automatically replays them when reviewing a session. This helped a lot with writing filters for the artefacts, like when the camera re-focuses.
The eye movements that triggered the audio track can be seen in the minute above. I was re-taming a hippo that I had saved as a baby in another life!
Here is the finalised release candidate of the Halograph EOG – a headband with a night-vision camera held in place by two bendable selfie-sticks:
It is more comfortable to sleep in than I had ever hoped. I can sleep on either side or on my back with complete freedom of movement with the 2 meter cable.
The age of light is nigh; this is light-bending!
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Caught a nice flight of stairs from the OpenEEG channel in the minute below.
The signal quality tapered off here and there after that, which can only be seen in the raw EEG data… will add a signal quality channel to keep track of it.
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An interesting change in the heart rate variance in the top-right corner that might be indicative of REM sleep:
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Download entry as Lucid Scribe Data (LSD), Comma Separated Values (CSV) or watch the video.
Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).
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…
Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV) or watch the video.
The eight waves in the minute featured above seem to have repeated every hour, around the 50 minute mark, starting at 2 am. The relative quite in the accelerometer channel suggest that the waves aren’t artifacts. I might set an alarm for them one day.
Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).
LSDBase 