EEG Session 3: Watching Forrest Gump

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

Session Characteristics

  • 01/10/2023, 18:08
  • I was watching the first part of the movie Forrest Gump.

All Sensors

  • Around 6:27 and 6:49 PM, the was an emotionally arousing scene (check below for the movie frame), and we can observe a rapid increase in all brainwaves’ energy levels. However, it’s possible that this change in brain wave activity is being caused by facial muscle tension or similar.
    • On the other hand, if we zoom-in into that time scale, we notice that the activity was too prolonged (it lasted around 1 minute) for it to be muscle tension.
    • Adding to that, I have no recollection of acting that much differently than I had been doing.
    • The actual reason will remain unexplained for now. Future sessions will be conducted to focus on the study of facial muscle tension.
  • Moving on, from 6:32 to 6:46 PM there was a gradual increase inGammaandBetabrainwaves, while other brainwaves remained stable
    • Calculations indicate that during that period,Betaincreased from 15% dominance to 22.5% dominance, corresponding to a 50% increase. Gammaincreased from 5% dominance to 13% dominance, corresponding to a 160% increase.
    • This may have been due to me getting more involved with the movie, thinking less about the headset, or being more predisposed to engagement after the emotional arousal mentioned before.
  • A blackout rectangle was included in the graph at around 6:44 PM to hide brain waves occurring when I was eating something and therefore introduced too much noise in the EEG signal.
  • Again between 6:48 and 6:50 PM there was another emotionally arousing scene (see image below for the movie frame) and all brain waves increased in energy levels.
  • After this, TV commercials were shown and I stopped recording.

Absolute Average Values (All Sensors)

  • Alphaaverage: 64 dB
  • Deltaaverage: 60 dB
  • Thetaaverage: 55 dB
  • Betaaverage: 51 dB
  • Gammaaverage: 31 dB

Percentual Average Values (All Sensors)

  • Alphaaverage: 30 %
  • Deltaaverage: 26%
  • Thetaaverage: 19 %
  • Betaaverage: 17 %
  • Gammaaverage: 7 %

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.

  • At first glance, activity seems to be a bit chaotic, but I found this to be normal for longer sessions — after all, it’s unlikely the center of gravity will remain perfectly static in one spot for long periods. Regardless, the centers of gravity in the image still show some specific tendencies.
  • Delta’scenter of gravity showed a somewhat large variability but was still mostly located on the Right-Back quadrant.
  • Theta’scenter of gravity was located in the Right-Back quadrant.
  • Alpha’scenter of gravity was located in the Right-Back quadrant.
  • Beta’scenter of gravity was located in the CenterRight-Back quadrant.
  • Gamma’scenter of gravity was located on the border of the central circle with a pull towards the CenterRight-Back quadrant.
  • This is my third recorded session and the first one to show activity clearly moving outside the center circle.

Stay Synced!

Leave a Reply

Your email address will not be published.