Research Article
Research on High-Frequency Combination Coding-Based SSVEP-BCIs and Its Signal Processing Algorithms
Figure 12
The Hilbert spectra of HFCC-SSVEP.
| (a) Hilbert spectrum 123 |
| (b) Hilbert spectrum 132 |
| (c) Hilbert spectrum 213 |
| (d) Hilbert spectrum 231 |
| (e) Hilbert spectrum 312 |
| (f) Hilbert spectrum 321 |