Table 1.
Comparison between the proposed system and other SSVEP-based systems.
| Lin et al. [18] | Feng et al. [30] | Wang et al. [31] | Proposed System | |
|---|---|---|---|---|
| Accuracy (%) | 95 | 89 | 83.3 | 92.5 |
| ITR (bits/min) | 14.58 | - | 4.6 | 36.08 |
| Wearable system | Yes | Yes | Yes | Yes |
| Wireless transmission | Bluetooth | Wifi | Bluetooth | Bluetooth |
| Encoding | Phase coding | Frequency coding | Frequency coding | Frequency coding |
| Number of EEG channels | 3 | 6 | 14 | 3 |
| Number of control commands | 4 | 5 | 4 | 12 |
| EEG sensor | Wet EEG electrode | Wet EEG electrodes | Saline-based electrodes | Novel dryelectrodes |
| Main computing unit | FPGA | Back-end computer | Back-end computer | FPGA |
| Stimulus device | LED | LCD | HMD | LCD |