Brain waves while playing brain games

This page contains the data and analysis of a brain wave recording session I did using a Muse 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.
  • Gamma, while in last place of dominance, still has more energy in this quadrant than in any other.
• 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.

Brainwave Lateralization According to Each Game

Below we can see a peculiar behavior regarding the Left/Right energy level balance ofAlpha,BetaandGamma. The other frequencies are not included because they are fairly balanced across all games.

In the image below:

1. Each colored circle represents each of the three games being played.
2. The first line showAlpha,BetaandGamma left/right balance at the front sensors (AF7 or AF8).
3. The bottom line showAlpha,BetaandGamma left/right balance at the back sensors (TP9 or TP10).

• The most interesting thing that stands out immediately is that in the frontal cortex,BetaandGammastart more on the left (AF7) and with each game they trend towards the center.
• On the back, however, they remain strong in the left-back TP9 quadrant (as explained in the previous session).

This means that for each game, we have the following configuration:

Game	Alpha (Front)	Beta (Front)	Gamma (Front)	Alpha (Back)	Beta (Back)	Gamma (Back)
Attention/Multi-tasking	Left	Left	Left	Center	Left	Left
Visual speed matching	Center	Left	Left	Left	Left	Left
Visual Memory Matrix	Center	Center	Center	Center	Left	Left

Centers of Gravity (Overview)

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

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