Effects of whole-body vibration on visual information processing(Summary of Awarded Presentation at the 27th Annual Meeting)

概要

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The present study investigated whether visual information processing deteriorates during exposure to whole-body vibration (WBV). It focused on the frequency effects of the vibration on target color discrimination and target detection performance. Eight participants performed target color discrimination and target detection tasks with, and without, 5Hz and 16Hz sinusoidal vertical vibration at a magnitude of 1.0ms^<-2> r.m.s.. Their reaction times (RTs) as a function of inter-stimulus intervals (ISIs) between a fixation display and a target display were compared for three experimental blocks: baseline without vibration (0Hz); 5Hz vibration; and 16Hz vibration. In the target discrimination tasks the RTs during shorter ISIs in the 5Hz block were significantly briefer than during the 0Hz and 16Hz blocks. For target detection, on the other hand, no significant difference was found between the three experimental blocks. These results suggested that visual information processing (i.e., target color discrimination) could be improved during exposure to 5Hz sinusoidal vertical WBV.
2009-09-30