Balldin U I, Derefeldt G, Eriksson L, Werchan P M, Andersson P, Yates J T
FOI, Swedish Defence Research Agency, formerly National Defence Research Establishment, FOA, Sweden.
Aviat Space Environ Med. 2003 Jan;74(1):29-36.
Only sporadic information exists concerning perceived color shifts at increased G-loads. The purpose of this study was to investigate whether or not color vision is affected by rapid onset high G7-loads up to +9 Gz, and specifically whether perception of hue changes.
There were 10 male subjects, 9 with normal color vision and 1 with red-green protanomaly, all accustomed to Gz-loads in a human centrifuge. Each subject was tested on a total of 60 Gz-exposures with 10 s periods at +3, +5, +7, and +9 Gz in the centrifuge on three different days. G-onset rate was 6 G x s(-1). The subjects wore an anti-G suit and performed straining maneuvers if necessary to maintain vision. Five square color stimuli of medium saturation (yellow, red, blue, green, and gray) were projected one at a time on a screen in front of the subject, who gave his hue response orally.
In 96.6% of exposures to various Gz-loads, the subjects responded by correctly naming colors. (The statistical analyses of the results were done for the subjects with normal color vision, with the protanomalous subject excluded.) Hue shifts occurred at the higher +Gz-levels, including 7.7% of the +9 Gz exposures. Yellow was the hue most frequently perceived as changed. Hue shifts were reported for yellow in 11% and 16% of the +7 and +9 Gz exposures, respectively. Hue shifts at +9 Gz occurred as frequently as blackout and G-LOC together. However, statistical analyses showed no significant effects for +Gz-load.
Absolute identification of the color stimuli of medium saturation was stable and was not significantly affected by the rapid onset +Gz-loads up to and including +9 Gz.
关于在增加G负荷时所感知到的颜色变化，仅有零散的信息。本研究的目的是调查快速 onset 高达 +9 Gz 的高G负荷是否会影响色觉，特别是色调感知是否会发生变化。
有10名男性受试者，9名色觉正常，1名患有红绿色觉异常，他们都习惯了在人体离心机中承受Gz负荷。每个受试者在离心机中于三个不同日期，在 +3、+5、+7 和 +9 Gz 下，以10秒时长进行总共60次Gz暴露测试。G起始速率为6 G x s(-1)。受试者穿着抗G服，必要时进行用力动作以保持视力。五个中等饱和度的方形颜色刺激（黄色、红色、蓝色、绿色和灰色）依次投射到受试者前方的屏幕上，受试者口头给出其色调反应。
在96.6%的各种Gz负荷暴露中，受试者通过正确说出颜色做出反应。（对色觉正常的受试者进行了结果的统计分析，排除了色觉异常的受试者。）在较高的 +Gz水平出现了色调变化，包括7.7%的 +9 Gz暴露。黄色是最常被感知为发生变化的色调。在 +7和 +9 Gz暴露中，分别有11%和16%的黄色报告有色调变化。+9 Gz时的色调变化与黑视和G-LOC同时发生的频率相同。然而，统计分析显示 +Gz负荷没有显著影响。
中等饱和度颜色刺激的绝对识别是稳定的，并且在高达并包括 +9 Gz 的快速 onset +Gz负荷下没有受到显著影响。
