Category: OpenEEG


I recorded another session with the OpenEEG… this time with a proper signal as evidenced by the OpenEEG RAW channel. The audio plug-out triggered from the OpenEEG channel at 0118:
Eye Movements at 0118

And then from the halograph FM channel at 0333:

Heartbeat Spike at 0333

Lost signal with a false positive at 0411:

Bad signal at 0411

That should be enough for me to add a signal quality channel and avoid false positives.

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2015-01-07 – EEG Stairs

Caught a nice flight of stairs from the OpenEEG channel in the minute below.

EEG Stairs

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.

Download entry as Lucid Scribe Data (LSD) with raw EEG data.

2015-01-02 – Kapalabhati

An exercise I picked up while practicing Bujinkan. The first printout shows four deep breaths a minute:

4 normal breaths

The second printout shows the rapid “shining” breaths, 60 inhalations and exhalations in one minute:

Effect of Kapalabhati on EEG

Notice the effect on the EEG channel. It feels exactly as pictured above. Although I have suspicion that a change in skin conductance (GSR) might be causing some artifacts. Perform Kapalabhati thusly:

Sit in the Lotus posture if possible and hold the head erect. Begin with an exhalation brought about by a rapid inward stroke of the abdomen. Inhalation follows immediately by relaxation of the abdominal muscles. Thus, inhalation is passive and automatic. Repeat this exercise at the rate of one exhalation per second. Look up at the end of the exercise, exposing the throat and hold the breath with the diaphragm.

Previously it was specified that the Lotus posture of yoga be employed for this exercise. The reason will now become apparent. When the breathing exercise described herein is properly performed over a long period, certain vibrations begin within the body. The vibrations, coupled with a feeling of exhilaration, lessen motor control of the limbs. In the Lotus, the legs are in a position impossible to undo without the aid of the hands.

This exercise is used to develop concentration.

Do not attempt while driving or operating machinery!

Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).

I dusted off my LightStone and set out on a new quest to detect the dream state from the heartbeat. The heart rate variability (HRV) channel sometimes creates castle-like patterns during deep sleep like in the printout below:

13 Strained Heartbeats at 0005

This pattern is sometimes interrupted – by movements, bad sensor readings and dreams perchance:

Eye Movement Count from EEG at 0017

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:

Eye Movement Count from EEG at 0017

Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).

2014-01-08 – Free Fall 2

EEG of Hypnagogic Jerk at 0101

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.

After explaining the REM-detection algorithm to a friend over the weekend, I was inspired to shed some light on it by plotting each step in the loop on the graph so that it becomes easier to visualize.

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.

13 Strained Heartbeats at 0005

And the second printout, recorded at 0017, shows the same thing happening with the OpenREM channel from the OpenEEG electrodes.

Eye Movement Count from EEG at 0017

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.

2013-11-22 – Knock, Knock

The four printouts that follow were recorded during the same night with the halograph FM and EEG.

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.

12 Strained Heartbeats at 0143

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.

2 Strained Heartbeats at 0408

And peaked with eye movements like this at 0412:

EOG from EEG 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.

Strained Heartbeats at 0450

Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).

2013-11-05 – EEG Waves

EEG Graph REM Sleep
I recorded with my halograph FM and EEG in parallel. The electrodes didn’t have the best contact, but they still picked up some interesting readings. I have been embedding the passive electrode in the headband by my temple – a lot more comfortable than the earlobe and it still picks up the eye movements.

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).

OpenEEG recording of a lucid dream
I had a rare natural lucid dream triggered by events inspired by the main theme of Bob DeNatale’s new film about lucid dreaming, The Art of Dreaming. I maintained lucidity for a good minute of human flight. The minute featured above shows a spike in the data that is otherwise flat, recorded at 0614, when I believe the dream occured. I was asleep from 0015 to 0640.

The algorithm didn’t trigger an audio track, as it was looking for multiple events like this in a row. I will update it to optionally trigger on only a single event, because of the vividness of the dream. The spike looks similar to when I open my eyes while awake.

Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).

2013-07-02 – (first post)no REM only dream

Sleep and Consciousness Research Graph
As always wake up around 3:30 in the morning,
start the computer and program, put on head electrodes and headphones.
Program had never caught REM’s probably too shallow sleep.

Download entry as Lucid Scribe Data (LSD) or Comma Separated Values (CSV).