TABLE IV.
Simulated Selectivity Values
| Target Fascicular Group | FINE Opening Height |
||
|---|---|---|---|
| 3.8 mm | 2.3 mm | 1.4 mm | |
| 22-contact FINE | |||
| Sartorius | 0.52±0.06 | 0.38±0.04 | 0.51±0.05 |
| Rectus Femoris | 0.42±0.05 | 0.51±0.06 | 0.44±0.05 |
| Vastus Lateralis | 0.11±0.05 | 0.17±0.05 | 0.24±0.12 |
| Vastus Intermedius | 0.47±0.08 | 0.62±0.10 | 0.51±0.15 |
| Vastus Medialis | 0.28±0.04 | 0.44±0.04 | 0.45±0.05 |
| Pectineus | 0.61±0.07 | 0.74±0.08 | 0.46±0.18 |
| FINE11A/B | |||
| Sartorius | 0.36±0.21 | 0.35±0.26 | 0.42±0.30 |
| Rectus Femoris | 0.29±0.24 | 0.36±.027 | 0.39±0.33 |
| Vastus Lateralis | 0.07±0.08 | 0.09±0.12 | 0.16±.012 |
| Vastus Intermedius | 0.24±0.25 | 0.31±0.32 | 0.25±0.28 |
| Vastus Medialis | 0.19±0.14 | 0.25±.021 | 0.30±0.17 |
| Pectineus | 0.31±0.33 | 0.37±0.40 | 0.23±0.27 |
| FINE 8A/B | |||
| Sartorius | 0.46±0.11 | 0.36±0.23 | 0.40±0.27 |
| Rectus Femoris | 0.32±0.24 | 0.33±0.30 | 0.40±0.33 |
| Vastus Lateralis | 0.07±0.08 | 0.10±0.11 | 0.16±0.12 |
| Vastus Intermedius | 0.27±0.17 | 0.31±0.28 | 0.25±0.28 |
| Vastus Medialis | 0.16±0.14 | 0.16±0.18 | 0.12±0.13 |
| Pectineus | 0.58±0.13 | 0.59±0.22 | 0.24±0.26 |
| FINE 8C | |||
| Sartorius | 0.40±0.12 | 0.37±0.23 | 0.33±0.33 |
| Rectus Femoris | 0.28±0.24 | 0.27±0.30 | 0.35±0.37 |
| Vastus Lateralis | 0.02±0.03 | 0.03±0.05 | 0.00±0.00 |
| Vastus Intermedius | 0.40±0.12 | 0.38±0.29 | 0.51±0.15 |
| Vastus Medialis | 0.20±0.17 | 0.12±0.17 | 0.14±0.15 |
| Pectineus | 0.56±0.10 | 0.47±0.18 | 0.46±0.18 |
| FINE 6A/B | |||
| Sartorius | 0.33±0.15 | 0.35±0.25 | 0.35±0.35 |
| Rectus Femoris | 0.26±0.21 | 0.30±0.28 | 0.36±0.33 |
| Vastus Lateralis | 0.00±0.00 | 0.02±0.04 | 0.00±0.00 |
| Vastus Intermedius | 0.22±0.21 | 0.19±0.28 | 0.25±0.28 |
| Vastus Medialis | 0.14±0.14 | 0.10±0.13 | 0.12±0.13 |
| Pectineus | 0.44±0.26 | 0.28±0.24 | 0.23±0.27 |
| FINE 6C | |||
| Sartorius | 0.40±0.12 | 0.37±0.23 | 0.33±0.33 |
| Rectus Femoris | 0.28±0.24 | 0.27±0.30 | 0.35±0.37 |
| Vastus Lateralis | 0.00±0.00 | 0.00±0.00 | 0.00±0.00 |
| Vastus Intermedius | 0.22±0.24 | 0.30±.032 | 0.00±0.00 |
| Vastus Medialis | 0.21±0.17 | 0.30±0.22 | 0.45±0.08 |
| Pectineus | 0.00±0.00 | 0.00±0.00 | 0.00±0.00 |
Selectivity and standard deviations obtained during stimulation via a single contact (“choose-1”) in which non-target muscles could not be activated above threshold (0.10). Values were obtained by averaging the five randomized populations for each cross-section across the three unique cross-sections. A/B data are averaged from the individual A and B configurations. Black cells indicate fascicle groups for which costs exceeded threshold before benefits exceeded threshold.