Table 3.
aVOR gain and latency responses during pDVA testing
| Diagnosis pre | pDVA Left | pDVA Right | ||||
|---|---|---|---|---|---|---|
| Velocity gain pre (post) | Acceleration gain pre (post) | aVOR latency pre (post) | Velocity gain pre (post) | Acceleration gain pre (post) | aVOR latency (post) | |
| BVH | ||||||
| Ipsilesional | 0.32 ± 0.34 (0.30 ± 0.13) | 0.51 ± 0.34 (*0.32 ± 0.13) | 44.24 ± 27.6 ms (*30.90 ± 12.48 ms) | 0.25 ± 0.15 (*0.36 ± 0.13) | 0.36 ± 0.25 (0.36 ± 0.11) | 45.27 ± 27.4 (29.8 ± 12.56) |
| Contralesional | 0.53 ± 0.22 (*0.75 ± 0.1) | 0.78 ± 0.25 (0.73 ± 0.2) | 17.76± 7.19 ms (15.7± 6.61 ms) | 0.48 ± 0.11 (*0.69 ± 0.1) | 0.61 ± 0.19 (*0.70 ± 0.15) | 17.5 ± 4.5 (*14.57 ± 5.63) |
| NL | ||||||
| Left | 1.00 ± 0.15 | 1.03 ± 0.12 | 7.52 ± 6.9 ms | 1.04 ± 0.04 | 1.06 ± 0.14 | 8.26 ± 2.6 ms |
| Right | 0.98 ± 0.10 | 1.02 ± 0.12 | 9.03 ± 4.3 ms | 1.00 ± 0.04 | 1.00 ± 0.13 | 5.37 ± 3.7 ms |
| UVH 56 | ||||||
| Ipsilesional | 0.58 ± 0.21 (0.6 ± 0.21) | 0.61 ± 0.14 (*0.69 ± 0.18) | 20 ± 7.6 ms (25.06 + 7.45 ms) | 0.71 ± 0.32 (0.68 ± 0.28) | 0.70 ± 0.15 (0.60 ± 0.19) | 19.2 ± 2.1 ms (29.4 ± 16.7 ms) |
| Contralesional | 1.18 ± 0.18 (1.06 ± 0.15) | 0.88 ± 0.15 (0.87 ± 0.23) | 9.3 ± 2 ms (12.05 + 2.3 ms) | 1.12± 0.11 (1.11 ± 0.08) | 0.62 ± 0.28 (*0.96 + 0.28) | 8.7 ± 2.1 ms (*11.14 ± 5.25 ms) |
| UVH 58 | ||||||
| Ipsilesional | 0.41 ± 0.18 (0.36 ±0.10) | 0.68 ± 0.32 (0.49 ±0.13) | 17.3 ± 7 ms (20.8 + 7.7 ms) | NT** | NT** | NT** |
| Contralesional | 0.82 ± 0.22 (0.90 ± 0.07) | 0.86 ± 0.08 (0.91 ±0.11) | 6.4 ± 2.4 ms (11.73 + 3.6 ms) | NT** | NT** | NT** |
| NL | ||||||
| Left | 1.08 + 0.15 | 0.68 ± 0.4 | 6.34 ± 2.5 ms | 1.11 ± 0.28 | 1.19 ± 0.51 | 20.81 ± 19 ms |
| Right | 1.14 + 0.02 | 0.97 ± 0.25 | 6.77 ± 0.76 ms | 1.07 ± 0.17 | 1.02 ± 0.21 | 6.66 ± 1.66 ms |
Mean ± 1 S D aVOR velocity gain, acceleration gain, and latency during pDVA testing. All data is for horizontal head rotations. pDVA left refers to condition with optotype flashing with left head impulses. pDVA right refers to condition with optotype flashing with right head impulses. NL in diagnosis column represents data from the age-matched, healthy control subjects to be compared with the data in the row (s) above; Top scores in each cell represent pre-vestibular physical therapy testing. Parenthetical data in the same cell refers to testing after 6 weeks of vestibular physical therapy. NT- not tested. BVH- bilateral vestibular hypofunction; UVH- unilateral vestibular hypofunction;
p < 0.05;
Data for this condition not collected due to removal of scleral coil per subject’s request.