Table 3.
Classification performance of 26 individual features using an SVM classifier when the training and testing sets are acquired from multiple conditions for multiple EMG datasets (Datasets 1–3).
| Feature Set | Able-Bodied Subjects | Amputee Subjects | Mean | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Limb Position | Forearm Orientation | Contraction Intensity | Contraction Intensity | ||||||||||||
| 1000 | 200 | d | 1000 | 200 | d | 1000 | 200 | d | 1000 | 200 | d | 1000 | 200 | d | |
| IAV | 95.2 | 92.6 | 0.7 * | 94.9 | 91.4 | 0.6 * | 98.4 | 96.3 | 0.7 * | 80.8 | 76.4 | 0.6 * | 92.3 | 89.2 | 0.7 |
| MAV | 95.2 | 92.6 | 0.7 * | 94.9 | 91.4 | 0.6 * | 98.4 | 96.3 | 0.7 * | 80.8 | 76.4 | 0.6 * | 92.3 | 89.2 | 0.7 |
| RMS | 95.2 | 92.5 | 0.7 * | 94.8 | 91.1 | 0.6 * | 98.2 | 96.2 | 0.7 * | 80.7 | 76.8 | 0.5 * | 92.2 | 89.2 | 0.6 |
| VAR | 93.1 | 89.2 | 0.7 * | 90.3 | 86.7 | 0.5 * | 94.7 | 92.9 | 0.3 * | 75.5 | 70.7 | 0.5 * | 88.4 | 84.9 | 0.5 |
| WL | 95.9 | 92.7 | 0.9 * | 96.2 | 91.1 | 0.9 * | 98.4 | 96.5 | 0.7 * | 80.4 | 75.2 | 0.6 * | 92.7 | 88.9 | 0.8 |
| DAMV | 95.9 | 92.7 | 0.9 * | 96.2 | 91.1 | 0.9 * | 98.4 | 96.5 | 0.7 * | 80.4 | 75.2 | 0.6 * | 92.7 | 88.9 | 0.8 |
| DASDV | 95.9 | 92.7 | 0.9 * | 95.9 | 91.1 | 0.9 * | 98.3 | 96.2 | 0.7 * | 79.8 | 75.5 | 0.5 * | 92.5 | 88.9 | 0.8 |
| DVARV | 93.6 | 89.5 | 0.7 * | 90.7 | 86.5 | 0.6 * | 94.6 | 92.6 | 0.4 * | 75.5 | 70.0 | 0.6 * | 88.6 | 84.7 | 0.6 |
| LS | 95.3 | 92.6 | 0.7 * | 95.0 | 91.5 | 0.6 * | 98.4 | 96.4 | 0.7 * | 81.1 | 77.0 | 0.6 * | 92.4 | 89.4 | 0.6 |
| MSR | 95.4 | 92.3 | 0.9 * | 95.5 | 91.7 | 0.7 * | 98.4 | 96.4 | 0.7 * | 80.7 | 75.1 | 0.7 * | 92.5 | 88.9 | 0.7 |
| LD | 94.4 | 90.2 | 1.0 * | 94.0 | 89.7 | 0.7 * | 97.8 | 94.7 | 0.9 * | 76.9 | 69.6 | 0.9 * | 90.7 | 86.1 | 0.9 |
| MFL | 96.5 | 93.1 | 1.1 * | 97.2 | 92.1 | 1.0 * | 98.9 | 96.8 | 0.8 * | 81.2 | 76.1 | 0.6 * | 93.4 | 89.5 | 0.9 |
| DFA | 72.0 | 32.4 | 9.5 * | 63.3 | 33.8 | 4.6 * | 69.6 | 36.2 | 3.2 * | 58.4 | 27.9 | 4.6 * | 65.8 | 32.6 | 5.5 |
| SampEn | 72.9 | 16.7 | 12.0 * | 66.4 | 18.3 | 7.9 * | 70.1 | 19.3 | 7.3 * | 56.9 | 17.9 | 5.4 * | 66.6 | 18.1 | 8.1 |
| ZC | 66.2 | 54.3 | 2.1 * | 58.0 | 54.1 | 0.5 | 68.0 | 59.7 | 0.8 * | 53.6 | 34.5 | 2.6 * | 61.4 | 50.6 | 1.5 |
| SSC | 66.2 | 38.4 | 5.4 * | 60.2 | 39.6 | 3.1 * | 64.1 | 43.6 | 2.7 * | 53.6 | 31.0 | 2.7 * | 61.0 | 38.1 | 3.5 |
| WAMP | 92.0 | 79.0 | 2.7 * | 91.9 | 77.7 | 1.9 * | 96.1 | 81.5 | 2.6 * | 61.5 | 49.2 | 1.2 * | 85.4 | 71.8 | 2.1 |
| MDF | 72.4 | 44.0 | 5.5 * | 64.2 | 45.5 | 2.6 * | 72.9 | 49.9 | 2.1 * | 56.2 | 35.0 | 3.2 * | 66.4 | 43.6 | 3.4 |
| MNF | 77.5 | 50.2 | 5.2 * | 71.1 | 51.1 | 2.8 * | 77.4 | 55.9 | 2.0 * | 65.3 | 38.7 | 3.8 * | 72.8 | 48.9 | 3.4 |
| AR4 | 93.6 | 54.4 | 11.2 * | 92.2 | 54.1 | 8.2 * | 94.2 | 58.9 | 6.9 * | 81.8 | 45.3 | 5.7 * | 90.5 | 53.2 | 8.0 |
| AR6 | 94.3 | 54.5 | 11.7 * | 93.2 | 54.0 | 8.4 * | 95.1 | 58.4 | 8.2 * | 83.1 | 45.4 | 6.1 * | 91.4 | 53.1 | 8.6 |
| AR9 | 94.5 | 54.8 | 10.8 * | 93.2 | 54.0 | 8.7 * | 95.5 | 58.6 | 9.3 * | 83.9 | 45.2 | 6.1 * | 91.8 | 53.2 | 8.8 |
| CC4 | 93.4 | 54.3 | 10.7 * | 91.2 | 54.0 | 7.4 * | 93.2 | 58.6 | 6.1 * | 81.3 | 45.0 | 5.8 * | 89.8 | 53.0 | 7.5 |
| CC6 | 94.0 | 54.6 | 10.7 * | 91.6 | 54.0 | 7.4 * | 94.1 | 58.2 | 6.1 * | 82.3 | 45.4 | 5.8 * | 90.5 | 53.0 | 7.5 |
| CC9 | 94.1 | 54.8 | 10.4 * | 91.5 | 53.4 | 8.0 * | 94.3 | 57.5 | 8.4 * | 83.4 | 44.8 | 6.4 * | 90.8 | 52.6 | 8.3 |
| HIST9 | 84.9 | 80.2 | 0.8 * | 84.2 | 81.3 | 0.4 | 88.7 | 85.8 | 0.3 | 72.1 | 68.0 | 0.5 * | 82.5 | 78.8 | 0.5 |
* Denotes a significant difference between 1000 Hz and 200 Hz ().