Table 1 Summary of stimulus parameters for perceptual attributes.
From: Investigating perceptual discrimination thresholds for attributes of whole-body vibration
Attribute | Stimulus Type | Frequency Range (Hz) | Amplitude Range (dB SL) | Additional Parameters | Reference Stimuli | Test Stimuli |
|---|---|---|---|---|---|---|
Weak | Sinusoidal | 50 | 10–30 | - | 26 dB | 30, 28, 24, 22 dB |
18 dB | 20, 16 dB | |||||
14 dB | 12, 10 dB | |||||
Up-and-Down | Sinusoidal | 12–100 | 20 | - | 17 Hz | 12, 20, 22 Hz |
30 Hz | 25, 35 Hz | |||||
55 Hz | 45, 65, 75, 100 Hz | |||||
Tingling | Sinusoidal | 100–300 | 25 | - | 120 Hz | 100, 110, 130, 140 Hz |
225 Hz | 200, 250, 275, 300 Hz | |||||
Repetitive | Amp. Modulated | 50 (carrier) | 25 | Modulation Freq.: 2–10 Hz | 2.4 Hz | 2, 2.2, 2.8 Hz |
3.6 Hz | 2.8, 3.9 Hz | |||||
5 Hz | 2.5, 7.5, 10 Hz | |||||
Even | Narrowband Noise | 50 (center) | 25 | Bandwidth: 0–25 Hz | 3 Hz | 0, 1, 2, 4, 5, 6 Hz |
10 Hz | 8, 15, 20, 25 Hz | |||||
Fading | Impulse | 5 | Varying | Decay Rate (\(\delta\)): 0.5–4.5 | \(\delta = 0.5\) | \(\delta = 1\) |
\(\delta = 2\) | \(\delta = 1.5, 2.5\) | |||||
\(\delta = 4\) | \(\delta = 2.5, 3, 3.5, 4.5\) |
