Table 2.
Active motor control, or “MiniVIE,” accuracy scores.
| User | P-basic | P-advanced | P-digits | C-basic | C-advanced | C-digits |
|---|---|---|---|---|---|---|
| 05 | 97.6% (16/19) | 0% (0) | 0% (0) | 100.0% (6/6) | 0% (0) | 0% (0) |
| 08 | 99.3% (19/20) | 96.3% (13/20) | 100.0% (4/4) | 100.0% (4/4) | 100.0% (4/4) | 100.0% (1/1) |
| 09 | 97.4% (23/29) | 92.0% (7/14) | 0% (0) | 100.0% (8/8) | 0% (0) | 0% (0) |
| 10 | 98.3% (5/6) | 85.4% (1/6) | 92.3% (2/5) | 100.0% (1/1) | 100.0% (1/1) | 0% (0) |
| 11 | 97.3% (21/28) | 88.1% (2/7) | 71.1% (0/3) | 96.2% (18/20) | 88.8% (6/18) | 94.4% (14/17) |
| 12 | 100.0% (20/20) | 99.2% (18/20) | 100.0% (20/20) | 100.0% (4/4) | 96.1% (3/4) | 97.1% (3/4) |
| 13 | 98.9% (19/21) | 95.6% (11/17) | 100.0% (13/13) | 100.0% (6/6) | 98.3% (3/4) | 100.0% (3/3) |
| 14 | 96.7% (20/25) | 99.1% (12/13) | 95.3% (4/6) | 100.0% (5/5) | 97.0% (2/3) | 100.0% (1/1) |
The motion classification accuracy results for the active motor control training, or “MiniVIE,” portion of the VIE study are displayed in Table 2. Included are each participant's mean accuracy scores for the Basic, Advanced, and Digit motion sets achieved while using either their residual/phantom (P) limbs or intact/control (C) limbs. The scores that pass the threshold for prosthetic efficiency (i.e., 95% accuracy) are bolded. The fractions provided within parentheses represent the number of assessments where that participant achieved greater than 95% accuracy over the total number of assessments they completed under those testing conditions. Of note, participant 11 has bilateral upper extremity amputations and opted to complete the study twice—once with each arm. Therefore, for participant 11 both the left and the right columns are “P” data, as he does not have a true intact, or “control,” limb. The left and right columns correspond to the data collected from his right and left arms, respectively.