Physiological characteristics of postural tremors
| Variable | ETA(n=20) | ET/PDB(n=7) | PDC(n=18) | p Value | |
|---|---|---|---|---|---|
| Latency (s) | 0.06 (0.28) | 4.70 (7.57) | 6.25 (9.76) | AB <0.01 | |
| (0–1.29) | (0–23.0) | (0–47.0) | AC <0.01 | ||
| Frequency (Hz) | 5.50 (0.88) | 5.75 (1.23) | 5.47 (1.24) | NS | |
| (3.5–7.2) | (4.3–7.7) | (4.1–9.6) | |||
| Acceleration (g2) at peak frequency | 0.52 (1.07) | 11.20 (10.70) | 3.83 (6.82) | AB <0.0001 | |
| (0.002–4.23) | (0.02–28.74) | (0.004–26.93) | AC <0.05 | ||
| RMS (g) | 0.051 (0.053) | 0.28 (0.25) | 0.186 (0.115) | AC <0.0001 | |
| (0.013–0.217) | (0.07–0.75) | (0.013–0.370) | AB <0.0005 | ||
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Values represent means (SD) (range); AB refers to a comparison between ET and ET/PD, AC refers to a comparison between ET and PD.
