A FURTHER INVESTIGATION OF THE INFLUENCE OF WHOLE-BODY VIBRATION AND NOISE ON TREMOR AND VISUAL ACUITY

1955 ◽  
Author(s):  
M. Loeb
Keyword(s):  
Visual Acuity ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Body Vibration

Influence of Whole-Body Vertical Vibration on Vision Performance

1996 ◽  
Vol 15 (1) ◽  
pp. 17-24 ◽  
Author(s):  
Barbara Harazin ◽  
Ladislav Louda ◽  
Krystyna Pawlas ◽  
Zdenek Jandak
Keyword(s):  
Visual Acuity ◽  
Whole Body Vibration ◽  
Mean Amplitude ◽  
Vertical Vibration ◽  
Whole Body ◽  
Sinusoidal Vibration ◽  
Body Vibration ◽  
Black And White ◽  
Clear Vision ◽  
Iso 2631

A new method of studying effects of whole-body vibration on visual acuity was developed. Nine seated subjects were exposed to vertical (z-axis) sinusoidal vibration with mean amplitude in the range of 0.9 to 11.2 ms−-2 r.m.s. Frequency responses of vibration levels resulting in equal 10% decrease of the visual acuity were determined for each subject over the frequency of 6.3 Hz to 63 Hz. The visual acuity was ascertained by the maximum distance of clear vision of black and white square field contours having a 1 mm side and arranged in a chessboard with total area of 1 cm x 1 cm. In comparison with the vertical weighting curve recommended by the Standard ISO 2631-1985, the slightly different mean contour of whole-body vibration required to produce the same decrement in visual acuity was found to be below 12.5 Hz and above 31.5 Hz.

Sign in / Sign up

Export Citation Format

Share Document