<p>Each "brainwave" is a range of frequencies that make up the signal, usually called a frequency band (ie. "the gamma frequency band"). To determine differences between bands, you would generally look at the <a href="https://en.wikipedia.org/wiki/Spectral_density" rel="nofollow noreferrer">power spectral density (PSD)</a> of the signal. For instance, you may want to compare the average power in each frequency band.</p>

<p>In practice the PSD is estimated by calculating a <a href="https://en.wikipedia.org/wiki/Periodogram" rel="nofollow noreferrer">periodogram</a>.</p>

CC BY-SA 4.0
2019-12-16T01:15:36.787Z
2019-12-16T01:15:36.787Z
Adam Francey
<p>I am a student working on EEGs.</p>
<p>I have a EEG data of Brainwave in 4 emotional states, namely anger, sorrow, joy and pleasure. Is there any method for determining the difference between these emotional states by analyzing the 5 Brainwaves (gamma to delta)? And how can I detect which brainwaves are dominant?</p>

<methodology><eeg><brain-waves>
How can I determine which of Brainwave is dominant as one state by EEG data?
Q.H.Chu
# How can I determine which of Brainwave is dominant as one state by EEG data?

(Asked by: username_0 on 2019-12-14)

I am a student working on EEGs.

I have a EEG data of Brainwave in 4 emotional states, namely anger, sorrow, joy and pleasure. Is there any method for determining the difference between these emotional states by analyzing the 5 Brainwaves (gamma to delta)? And how can I detect which brainwaves are dominant?

**Tags:** methodology, eeg, brain-waves


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## 1 answers

### Answer by username_1 on 2019-12-16. Score: 1

Each "brainwave" is a range of frequencies that make up the signal, usually called a frequency band (ie. "the gamma frequency band"). To determine differences between bands, you would generally look at the [power spectral density (PSD)](https://en.wikipedia.org/wiki/Spectral_density) of the signal. For instance, you may want to compare the average power in each frequency band.

In practice the PSD is estimated by calculating a [periodogram](https://en.wikipedia.org/wiki/Periodogram).


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