Brain waves while learning

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

Session Characteristics

• 29/10/2023, 22:31
• During this session, I was learning about topics that fascinate me, for about 25 minutes.
• The topic was the Pyramids of Giza and its mathematical peculiarities.
• At the same time, I was taking notes and writing them down in the software Obsidian.

All Sensors

• Delta,Theta,Alphaand Beta form a tight band with similar energy levels and maintain that state for the whole session, which is not a kind of behavior I’ve observed before.
• Betasometimes rises to first and second-place dominance, which rarely happens in the data for all sensors. This seems to be evidence that I was indeed engaged in my studies.
• Next, let’s take a closer look at individual sensors.

Front-Left Sensor (AF7)

• Betadominance prevails throughout the Front-Left quadrant throughout the whole session.
• Gamma,for the first 10 minutes, also dominates in second place.
• While it’s more common to seeBetaandGamma dominating the Front-Left quadrant, I still find it interesting how both these frequencies were able to achieve such high separation from slower bands and sustain it for about 10 minutes.

Front-Right Sensor (AF8)

• Comparing to the AF7 sensor, activity in the Front-Right quadrant has some similarities but also some differences.
• BetaandGamma also clearly dominate in the beginning of the session with a clear separation from slower frequencies. In fact, in terms of absolute energy levels (Y-axis) these two bands are higher than AF7.
• However, this dominance changes after 6 minutes, where there is a large boost andDeltadominance and a largeGamma andBetadominance drop (which returns once again at the end of the session).
• I considerDeltato be hard to interpret sometimes, but I read that it can rise during periods of mental effort or attention in order to facilitate those processes (for instance, by inhibiting other processes that “would get in the way”). It seems plausible this could be one such case. Even though I still have some questions about whyBetaandGammadecreased so much.

Back Sensors (TP9, TP10)

• In the back sensors,Alphadominates andBetaandGammahave the lowest dominance, which seems to indicate those parts are more idle and the action is occurring in the front instead.

Quadrant Energy Levels (Overview)

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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