Research Article
Real-Time EEG-Based Happiness Detection System
Table 2
EEG signal decomposition.
| Frequency band | Frequency range (Hz) | Frequency bandwidth (Hz) | Decomposition level |
| Delta | 0–4 | 4 | A4 | Theta | 4–8 | 4 | D4 | Alpha | 8–16 | 8 | D3 | Beta | 16–32 | 16 | D2 | Gamma | 32–64 | 32 | D1 |
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