Table 1 Levels and relative energy of each component by discrete wavelet transform for all subjects’ center of pressure, in quite standing trial on a stable platform with eyes closed
Levels | Frequency (Hz) | Relative energy \((mean \pm sd )\%\) |
|---|---|---|
\(D_1\) | [750–1500] | 0.025 ± 0.03 |
\(D_2\) | [338–832] | 0.013 ± 0.01 |
\(D_3\) | [168–409] | 0.009 ± 0.01 |
\(D_4\) | [84.1–204] | 0.008 ± 0.01 |
\(D_5\) | [42.1–102] | 0.013 ± 0.01 |
\(D_6\) | [21–51] | 0.027 ± 0.03 |
\(D_7\) | [10.5–25.5] | 0.089 ± 0.10 |
\(D_8\) | [5.26–12.7] | 0.397 ± 0.45 |
\(D_9\) | [2.63–6.37] | 1.571 ± 1.37 |
\(D_{10}\) | [1.31–3.19] | 5.469 ± 3.49 |
\(D_{11}\) | [0.657–1.59] | 15.184 ± 8.23 |
\(D_{12}\) | [0.329–0.797] | 17.119 ± 7.10 |
\(D_{13}\) | [0.165–0.398] | 14.047 ± 6.4 |
\(D_{14}\) | [0.086–0.199] | 14.544 ± 6.22 |
\(D_{15}\) | [0.0488–0.099] | 16.763 ± 10.46 |
\(D_{16}\) | [0.033–0.041] | 13.347 ± 12.40 |
Approx | [0–0.00813] | 1.367 ± 1.04 |