Table 3.
Evidence that sensory reweighting causes postural sway to have an increased dependence on vestibular noise
Hypothesized Cause for Lower Correlation | Comparison | Correlation Coefficients between ML Sway and Lateral Translation (r) | P Value for Higher r (one-sided) |
---|---|---|---|
A. Altered proprioceptive cues | SOT 4 vs. SOT 1 | +0.74 vs. +0.36 | 0.044 |
SOT 5 vs. SOT 2 | +0.77 vs. −0.13 | 0.0008 | |
Combination of the above two comparisons | 0.0004 | ||
B. Elimination of visual cues | SOT 2 vs. SOT 1 | −0.13 vs. +0.36 | 0.96 |
SOT 5 vs. SOT 4 | +0.77 vs. +0.74 | 0.36 | |
Combination of the above two comparisons | 0.72 | ||
C. Altered proprioceptive cues and elimination of visual cues | SOT 5 vs. SOT 1 | +0.77 vs. +0.36 | 0.026 |
SOT, sensory organization test. P values show evidence that the correlation coefficient is significantly larger (Pearson–Filon statistic (57); combination of two P values is implemented using Fisher’s method). A., B., and C. denote three different hypotheses.