Hand-arm vibration, Part III: Subjective response characteristics of individuals to hand-induced vibration

Equivalent comfort contours for vertical vibration of steering wheels: Effect of vibration magnitude, grip force, and hand position

“…Much of the glabrous skin of their hands was in contact with the handle. The frequency-dependence of the threshold contours for the UPPER and the LOWER hand positions is similar to the frequency-dependence reported previously by Miwa (1967), Reynolds et al (1977) and Morioka and Griffin (2005b). .…”

“…2009 In : Applied Ergonomics. 40, 5, p. 817-825. frequency-dependence of equivalent comfort contours determined by Miwa (1967), Reynolds (1977), Mishoe and Suggs (1977), Giacomin et al (2004) and Morioka and Griffin (2006) seem to differ from the frequency-dependence of absolute perception threshold contours, possibly due to the involvement of different receptors at different vibration magnitudes (Morioka and Griffin, 2005a).…”

“…Absolute thresholds have U-shaped curves with the minimum vibration displacement required for perception between 150 and 250 Hz but with a sensitivity that varies between studies, due to differences in hand posture (e.g., a gripping posture or a flat palm), psychophysical measurement method, grip force and feed force (see Miwa, 1967;Reynolds et al, 1977;Brisben et al, 1999;Morioka and Griffin 2002;2006). At supra-threshold levels, the Published as: Equivalent comfort contours for vertical vibration of steering wheels: Effect of vibration magnitude, grip force, and hand position Morioka, M. & Griffin, M. J.…”

Absolute thresholds for the perception of fore-and-aft, lateral, and vertical vibration at the hand, the seat, and the foot

“…The ways in which the perception thresholds in the present results depend on the frequency of vibration are broadly similar to those determined in other studies with vibration of the hand [1][2][3][4][5] and the seat [6][7][8][9], as seen in Fig. 2.…”

“…Thresholds for the perception of vibration have been determined in studies of handtransmitted vibration [1][2][3][4][5] and in studies of whole-body vibration with seated subjects [6][7][8][9] and standing subjects [6][7]. However, there has been little investigation of perception thresholds for the foot resting on a vibrating surface.…”