EEG

Research on the electrical activity of the brain began in 1924. The phenomenon of the so-called alpha block, a reaction of brain waves to increased mental activity, was also known during this period.

Application

  • Diagnosis
  • Biofeedback
  • Brain-Computer Interfaces
  • Neuropsychological research

In addition to alpha waves, electrical brain activity is also divided into beta, gamma, delta, and theta waves. Depending on the measurement location on the surface of the head, conclusions about various mental activities can be drawn from activity in the respective frequency bands.

  • Significance for the emotional intensity: relatively high
  • Informative value on the kind of emotion: partially
  • Informative value on the mental workload: high
  • Effort: complex measurements through electrodes on the scalp surface