Table 2.
Nystagmus Slow-Phase Velocity (°/s) by Position
| Sitting Upright | Supine | Right-Lateral | Left-Lateral | |
| Mean | 1.1 | 2.2 | 2.6 | 2.0 |
| SD | 2.1 | 2.9 | 3.4 | 3.2 |
| Min. | 0.0 | 0.0 | 0.0 | 0.0 |
| Q1 | 0.0 | 0.0 | 0.0 | 0.0 |
| Med. | 0.0 | 1.4 | 1.7 | 0.0 |
| Q3 | 1.5 | 3.4 | 3.9 | 3.0 |
| Max. | 9.3 | 14.1 | 14.0 | 16.0 |
Nystagmus slow-phase velocity characteristics of 101 healthy normal controls in four positions, all fast-phase directions combined. [Max; Maximum, Med.; Median, Min; Minimum, Q1; First quartile, Q3; Third quartile, SD; Standard Deviation, °/s; Degrees per second].