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作者对10名受试者在全身振动作用下,研究视机能变化和视力减退的机制,以期为制定全身振动标准提供理论根据。受试者坐在有靠背椅并能保持固定姿势的振动台上,对身体给与垂向正弦波振动。台面加速度幅值的测定,使用Endevco213E型压电型传感器和2736型增幅器,头部加速度幅值的测定使用Endevco2222型(0.5g)的传感器,该传感器是安放在覆盖受试者头顶上的一个木盘上。视力测定是使用市售的5米平假名视力表;大岛式近距离平假名文视力表,以及该表被放大了的平假名文视力表。视标是采用两个狭缝光源,并把它放置在被检
The author of 10 subjects in the whole body vibration under the action of visual function and visual acuity mechanism of study, in order to provide a theoretical basis for the development of whole body vibration standards. The subject sat on a shaker with a backrest and a fixed position, giving the body vertical vibrations. Determination of the acceleration amplitude of the tabletop, using the Endevco 213E piezoelectric transducer and the Model 2736 amplifier, the head acceleration amplitude was measured using an Endevco Model 2222 (0.5g) sensor placed on top of a subject On the wood The visual acuity test uses a commercially available 5-meter hiragana acuity chart, a large island-like hiragana language chart, and an enlarged hiragana acuity chart. The optotype uses two slit light sources and places it under seized