The impact of low-frequency noise on human mental performance.
The impact of low-frequency noise on human mental performance.
复制标题
低频噪声对人类心理表现的影响。
DOI：
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发表时间：
2005
影响因子：
2
通讯作者：
M. Śliwińska
中科院分区：
文献类型：
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作者：
Małgorzata Pawlaczyk;A. Dudarewicz;M. Waszkowska;W. Szymczak;M. Śliwińska
目标
越来越多的数据表明，低频噪声（LFN）定义为以低频（10-250 Hz）为主要内容的宽带噪声，其性质与其他类似水平的环境噪声不同。该研究的目的是调查在工业控制室中正常发生的LFN暴露水平是否会影响人的心理表现（例如，视觉功能、注意力集中、持续和选择性注意力）和主观幸福感。
材料和方法
该研究包括96名女性和男性志愿者，年龄在19-27岁之间，根据对LFN的敏感性进行分类。他们在暴露于LFN或宽带噪声期间进行了四项标准化心理测试（信号检测，Stroop色词，名称比较和持续注意力），其中没有50 dB（A）的主导低频内容（参考噪声）。每例受试者仅在随机分配的暴露条件下研究一次。
结果
在名称比较测试中，无论LFN敏感性如何，受试者在暴露于LFN期间比在参考噪声中表现出更多的错误倾向，并且在信号检测测试中，他们通常反应更快（具有更短的中值检测时间）。然而，在这些噪声条件下，与低灵敏度的受试者相比，对LFN高灵敏度的受试者表现出工作不太精确的倾向（在信号检测测试中获得的正确响应次数较少），而在参考噪声中，与噪声灵敏度相关的差异并不存在。在Stroop色词测试（阅读干扰指数的情况下，噪音和噪音敏感度之间存在显著的相互作用）和持续注意力测试（更容易出现错误反应）中，被归类为对LFN高度敏感的受试者在暴露于LFN期间的表现也比其他受试者差。
结论
这些结果表明，中等水平的LFN可能会对视觉功能、注意力、持续性和选择性注意产生不利影响，特别是在对LFN高度敏感的受试者中。
OBJECTIVES
There is a growing body of data showing that low frequency noise (LFN), defined as broadband noise with dominant content of low frequencies (10-250 Hz) differs in its nature from other environmental noises at comparable levels. The aim of the study was to investigate whether exposure to LFN at levels normally occurring in the industrial control rooms can influence human mental performance (e.g., visual functions, concentration, continuous and selective attention) and subjective well-being.
MATERIALS AND METHODS
The study included 96 female and male volunteers, aged 19-27 years, categorized in terms of sensitivity to LFN. They worked with four standardized psychological tests (Signal Detection, Stroop Color-Word, Comparing of Names, and Continuous Attention) during exposure to LFN or broadband noise without dominant low frequency content (reference noise) at a level of 50 dB(A). Each subject was studied only once at randomly-assigned exposure conditions.
RESULTS
In the Comparing of Names Test, the subjects, regardless of the LFN sensitivity, showed tendency to make more errors during exposure to LFN than in the reference noise, and in the Signal Detection Test, they generally reacted faster (had shorter median detection time). In those noise conditions, however, the high-sensitive to LFN subjects, showed tendency to work less precisely (achieved lower number of correct responses in the Signal Detection Test) compared with the low-sensitive ones, while in the reference noise there was no difference related to noise sensitivity. The subjects categorized as high-sensitive to LFN also showed poorer performance than others during exposure to LFN in the Stroop Color-Word Test (a significant interaction between noise and noise sensitivity in case of reading interference index) and in the Continuous Attention Test (a tendency to more erroneous reactions).
CONCLUSIONS
These findings suggest that LFN at moderate levels might adversely affect visual functions, concentration, continuous and selective attention, especially in the high-sensitive to LFN subjects.