相关色温对午后疲劳者的警觉性、认知和情绪的非视觉影响

IF 2.5 2区 工程技术 Q2 ENGINEERING, INDUSTRIAL International Journal of Industrial Ergonomics Pub Date : 2024-04-18 DOI:10.1016/j.ergon.2024.103589
Yanjie Li , Weining Fang , Hanzhao Qiu , Jianxin Wang
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引用次数: 0

摘要

铁路调度员由于长时间高度集中注意力,很容易产生精神疲劳。作为封闭控制中心的主要甚至唯一光源,人工照明对人的警觉性、认知和情绪有非视觉影响。为了研究外部环境线索是否能抵消内源性心力衰竭引起的成绩下降,本研究调节了四种相关色温(CCT)水平,并开发了一项视觉任务和六项认知任务,分别代表基本和高级认知功能,包括持续注意、反应抑制、工作记忆、风险决策、执行控制和情绪感知。研究采用了受试内设计,以收集正常和疲劳精神前驱状态下的主观和行为反应。研究分析了α和θ波段的脑电图(EEG)以及四种疲劳相关算法,包括θ/β、α/β、(θ+α)/β和(θ+α)/(α+β),以探索这些反应背后的潜在神经机制。结果表明,CCT 和心理前因状态对警觉性、认知和情绪有复杂的交互作用。较高的 CCT 对主观警觉性和积极情绪有支持作用,与心理前因状态无关。但是,它对持续注意力任务的表现有轻微的影响。相反,较高的 CCT 能显著增强疲劳者的高级认知功能。脑电图数据显示,在 12,000 K 时,α 振荡增加,但θ 活动和(θ + α)/β 受到抑制,这表明较高的 CCT 可以部分缓解精神疲劳引起的警觉性和认知能力下降。为了制定适当的光生物照明方案来干预疲劳,今后需要进行更大规模和更长期的研究,以测量一系列干扰因素和个体差异。
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The non-visual effects of correlated color temperature on the alertness, cognition, and mood of fatigued individuals during the afternoon

Railway dispatchers are prone to mental fatigue due to prolonged periods of intense concentration. As the main or even the only light source in the enclosed control centers, artificial lighting has non-visual effects on human alertness, cognition, and mood. To investigate whether external environmental cues could counteract performance decline induced by endogenous cardiac exhaustion, the current study modulated four correlated color temperature (CCT) levels and developed one visual task and six cognitive tasks representing basic and advanced cognitive functions, including sustained attention, response inhibition, working memory, risk decision-making, executive control, and emotion perception. A within-subjects design was employed to collect subjective and behavioral responses under both normal and fatigued mental antecedent states. Electroencephalogram (EEG) with alpha and theta bands as well as four fatigue-related algorithms including θ/β, α/β, (θ+α)/β, and (θ+α)/(α+β) were analyzed to explore the underlying neural mechanisms behind these responses. The results indicated a complex interactive pattern of CCT and mental antecedent state on alertness, cognition, and mood. Higher CCT had a supportive effect on subjective alertness and positive mood, independent of mental antecedent state. However, it exhibited a slight performance-impairing effect on sustained attention tasks. Conversely, higher CCT demonstrated a significant enhancement in advanced cognitive functions for fatigued individuals. EEG data revealed alpha oscillations increased, but theta activity and (θ + α)/β suppressed at 12,000 K, suggesting higher CCT partially alleviated the decline in alertness and cognition induced by mental fatigue. To develop an appropriate photobiological lighting scheme for fatigue intervention, larger and longer-term studies are needed in the future to measure a range of confounding factors and individual differences.

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来源期刊
International Journal of Industrial Ergonomics
International Journal of Industrial Ergonomics 工程技术-工程:工业
CiteScore
6.40
自引率
12.90%
发文量
110
审稿时长
56 days
期刊介绍: The journal publishes original contributions that add to our understanding of the role of humans in today systems and the interactions thereof with various system components. The journal typically covers the following areas: industrial and occupational ergonomics, design of systems, tools and equipment, human performance measurement and modeling, human productivity, humans in technologically complex systems, and safety. The focus of the articles includes basic theoretical advances, applications, case studies, new methodologies and procedures; and empirical studies.
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