EEG Session 12: Luminosity Brain Games

This page contains the data and analysis of a brain wave recording session I did using a Muse Gen 1 EEG Headband.

Session Characteristics

  • 02/11/2023
  • During this session, I was playing the brain app Luminosity, namely 3 types of games:
    • Attention/Multi-tasking
    • Visual speed matching,
    • Visual memory matrix.
  • It was challenging and I felt my brain pulsating.

All Sensors

  • Even though looking at the data as is shown below is not very clear, we can still discern that:
  • Gammahas the lowest dominance throughout the whole session, and it’s somewhat separated into its own territory.
  • The overall energy levels of all frequency bands decrease over time.
  • Gammashows a lot of variability sometimes (high-amplitude oscillations), and sometimes it’s more controlled.
  • However, this raises the question — how did the other brainwave frequencies behave in terms of variability?
  • By isolating each frequency band independently, we can get a clearer answer.
  • As you can see, in terms of energy levels,Delta,Theta,andAlphashow higher levels of stability and consistency throughout the session, whileBetashows a bit less andGammaeven less.
  • Notice how after 12:33,Delta and Theta,while still stable in terms of overall energy levels, change behavior. More specifically, their oscillations increase in amplitude, and they also don’t occur as often.
    • Could this behavior reflect me playing a different game?
    • In fact, I think based on how brain wave activity changes, that the times when I changed games was 12:30:45 and then either 12:33:00 or perhaps 12:34:30.

All Sensors (Smoothed Out)

  • Smoothing the data from all sensors allows us to uncover an interesting detail — Delta,Theta,andBeta are forming an intertwined tight band throughout the session. I haven’t observed this type of brain wave activity in other sessions so far.

Left-Back Sensor (TP9, Smoothed Out)

  • The activity from other individual sensors (AF7, AF8, TP10) all have the same characteristics as the graph shown above. It is in the Left-Back sensor (TP9) where we find something different.
  • Here, a different pattern emerges –AlphaandBetaform a dominant band, clearly separated from a lower band constituted by Delta,Theta, andGamma.
  • This seems to indicate that whatever brain computation was required, it was occurring more intensely in the Left-Back quadrant. This is the first session I recorded where brain effort was mostly occurring in the Left-Back quadrant, instead of the Left-Front quadrant.

Absolute Average Values (All Sensors)

  • Alphaaverage: 61 dB
  • Deltaaverage: 52 dB
  • Betaaverage: 50 dB
  • Thetaaverage: 49 dB
  • Gammaaverage: 30 dB

Percentual Average Values (All Sensors)

  • Alphaaverage: 33 %
  • Deltaaverage: 21 %
  • Betaaverage: 20 %
  • Thetaaverage: 19 %
  • Gammaaverage: 8 %
  • The dominance percentages of 🔴 Delta, 🟣 Theta, and 🟢 Beta are almost the same (around 20%), forming a very tight band as explained above.

Brainwave Lateralization

Center of Gravity

For reference: the circle marks the central area of the brain. Activity inside it is more central and symmetrical; outside is more asymmetrical.

  • Delta’scenter of gravity was located in the Center-Back quadrant.
  • Theta’scenter of gravity was located in the Center-Back quadrant.
  • Alpha’scenter of gravity was located in the Center-Back quadrant.
  • Beta’scenter of gravity was located on the Left-Back quadrant.
  • Gamma’scenter of gravity was located in the Left-Back quadrant.
  • It’s rare to see all centers of gravity fall outside of the central circle, specificallyBetaandGammain the Left-Back quadrant. This was the first session I did where I was exerting conscious mental effort.

Stay Synced!

Leave a Reply

Your email address will not be published.