照明的非视觉作用及其脑神经机制

照明在人类生活、工作和学习中发挥着举足轻重的作用, 除了提供基本的视觉作用(对周围事物的大小、颜色、形状等方面的视觉感知)外, 还会对人的生理、心理功能产生显著影响, 如调节褪黑素分泌、影响生物节律, 促进认知加工、调节由季节变化引起的情绪情感障碍(SAD)等。这种对生理、心理活动产生直接或间接的影响即为照明的非视觉作用。近年来, 照明的非视觉作用及其背后的神经机制得到了研究者的广泛关注和大量实证研究, 并取得了丰硕成果。未来研究需从模型建构、动态照明等角度入手进一步探索照明的非视觉作用及其脑神经机制。     

环境光照对情绪的影响及其作用机制

环境光照作为重要的授时因子, 对多种生理和心理功能存在广泛影响, 其对情绪的非视觉作用尤其引起研究者们的关注。研究发现, 环境光照的照度、色温和波长均是影响情绪的重要物理因素; 短光周期、夜间人工光以及持续光照/黑暗等异常光照模式则会导致情绪障碍; 光照的情绪效应还受到光照时长、时间点、个体特征、主观偏好及基因类型等的调节。光照作用于情绪的路径主要包括两个方面, 一方面视网膜中的内在光敏感神经节细胞将光信号投射至情绪调节相关脑区直接影响情绪; 另一方面光信号通过同步内部生理节律及其调节下的激素分泌、神经传递和睡眠间接影响情绪。未来研究考察短时光照的视觉功效时需要采用更客观多样化的情绪测量技术, 综合非视觉与视觉作用路径深入对比健康与情绪障碍群体的差异性。     

光照的警觉性作用

光照除了传统的视觉作用外, 还具有一定的非视觉效应, 包括调节昼夜节律、褪黑素分泌和警觉性等生理功能和行为表现。随着光照对生理节律影响研究的不断深入, 近来很多学者开始关注光照的警觉性作用。我们根据最新研究进展总结了：(1)警觉性的测量工具; (2)光照强度、时长、时间点、波长、色温等对光照警觉性作用的影响; (3)光照在治疗情绪障碍、调节生理节律、完善办公照明方面的应用; (4)提出了继续探讨光照警觉性作用的神经机制、优化参数特征和探讨混淆变量的研究方向。     

光照对社会心理和行为的影响

作为光照的非视觉功效之一,光照对社会心理和行为影响的研究相对较少但是方兴未艾。光照对亲社会行为和反社会行为具有不同影响,目前提出的加工机制涉及情绪、相依型自我建构、匿名感、道德自我和具身认知。未来研究需要从光照维度和模式、自然光的实验室研究、心理加工机制、神经生化机制、群体差异、调节变量、重复性研究和本土化研究等方面做努力。     

心理账户：理论与应用启示

“心理账户”是人们在心理上对结果（尤其是经济结果）的编码、分类和估价的过程,它揭示了人们在进行（资金）财富决策时的心理认知过程。心理账户的理论成果主要集中在“非替代性”的本质特征以及特殊的心理运算规则,心理账户在各个应用领域的研究成果主要包括：价格感知;行为资产组合理论;行为生命周期理论以及消费预算的研究。未来将在多元化研究方法的基础上,开展跨文化研究,对心理账户的内在心理机制和认知规律深入探讨     

饥饿对认知与社会行为的影响及其机制

从心理学视角综述了饥饿对个体认知与社会行为的广泛影响。饥饿会损害一般认知功能, 潜在导致决策与认知偏差, 并引发道德判断标准降低、社会态度改变以及攻击行为增加等现象。在以往研究的基础上, 总结出饥饿影响认知与社会行为内在机制的三种假说：自我损耗说、认知激活说以及协调机制说。最后, 指出当前研究存在着饥饿主观感受差异、测量方法不够准确等问题, 未来研究需要提高饥饿的测量效度, 从生理、心理、社会等多个层面对饥饿影响的机制进行深入探讨。     

颜色恒常认知框架模型

颜色恒常认知受到多种因素影响 ,其中包括照明、表面和背景等因素 ,也包括颜色对比、边界检测、颜色适应、模式识别 ,以及根据不同的环境线索采用不同的加工策略等认知影响因素 ,在分析上述因素的基础上尝试性地提出了一个颜色恒常认知框架模型。     

非言语学习不良的研究现状和展望

非言语学习不良日益成为学习不良研究的新热点,非言语学习不良的概念界定、筛查和诊断标准以及非言语学习不良的神经心理、认知、社会性和教育干预等领域取得了大量的研究成果。但是,非言语学习不良研究中还存在许多需要解决的问题,如：界定标准不统一;对非言语学习不良的系统研究有待完善;缺乏有效的干预模式及实证研究等。这些问题都需要进一步的研究、探讨     

母亲心理控制与青少年问题性网络使用：非适应性认知的中介作用

本研究旨在考察母亲心理控制对青少年问题性网络使用（PIU）的直接和间接作用路径,以及这些路径是否受到性别的调节。以四所初级中学660名青少年为被试,要求其报告母亲的心理控制、非适应性网络认知以及问题性网络使用的情况。结果表明：（1）在控制了性别、年龄、家庭经济状况后,母亲心理控制对青少年PIU具有显著的正向预测作用;（2）非适应性认知在母亲心理控制与PIU之间具有部分中介作用;（3）母亲心理控制与PIU的直接关系（包括总效应和残余效应）以及间接关系（包括心理控制与非适应性认知的关系和非适应性认知与PIU的关系）均未受到性别的调节。研究结果说明母亲心理控制既直接影响青少年PIU,同时也通过非适应性认知产生间接影响,这些直接和间接路径在本研究中未表现出性别差异。     

说谎的非言语视觉线索

说谎是一种非常普遍的社会现象。及时有效地识别说谎, 在人际交往和司法安防领域都具有十分重要的意义。根据说谎的自主性, 将说谎研究的实验范式分为被动说谎范式、主动说谎范式和混合说谎范式三大类。个体说谎时具有较高的认知负荷、较强的情绪唤醒和刻意的自我控制等心理活动特点, 这些心理活动会导致眼睛运动、面部表情、姿态动作等非言语视觉线索的变化, 且非言语视觉线索存在个体差异。未来研究应深入考察说谎的内在心理机制以及非言语视觉线索的心理意义, 加强真实情境下说谎行为的研究, 并借助新技术实现对非言语视觉线索的精准测量和分析。     

室内照度和时间对警觉性和视空绩效的影响

本研究考察了白天室内照度和测验时间对个体视空工作记忆和视空能力及主观情绪和警觉性的影响。采用2(高/低照度水平)×2(上午/下午)混合设计,结果发现：被试在高照度水平下的柯西块任务的正确率更高,警觉反应更快,且尤其体现在下午时段;而不同照度水平对点记忆任务、视空能力测验和主观情绪无显著影响。结果表明白天室内照度能够影响个体的视空工作记忆和警觉性,主要表现在高照度照明环境的积极作用上,而对个体的视空能力及情绪变化影响微弱。     

Affective and cognitive reactions to subliminal flicker from fluorescent lighting

This study renews the classical concept of subliminal perception (Peirce & Jastrow, 1884) by investigating the impact of subliminal flicker from fluorescent lighting on affect and cognitive performance. It was predicted that low compared to high frequency lighting (latter compared to former emits non-flickering light) would evoke larger changes in affective states and also impair cognitive performance. Subjects reported high rather than low frequency lighting to be more pleasant, which, in turn, enhanced their problem solving performance. This suggests that sensory processing can take place outside of conscious awareness resulting in conscious emotional consequences; indicating a role of affect in subliminal/implicit perception, and that positive affect may facilitate cognitive task performance.     

Irrelevant speech and indoor lighting: effects on cognitive performance and self‐reported affect

This study examined the disruption of cognitive performance by ecologically valid, office and school like settings with warm‐ or cool‐white lighting and silence or meaningful, irrelevant, conversational speech, and whether any such susceptibility was attributable to the changes in affective states. The study aims to address the lack of data on combined impact of noise and light on humans in previous research and to complement findings of irrelevant sound effect in list memory studies. No interactions between noise and light were shown, but there were main effects of noise and light on long‐term memory recall and of noise on self‐reported affect. Cool‐white compared to warm‐white lighting impaired the long‐term memory recall of a novel text. Learning from this text was, in addition, disrupted by meaningful, irrelevant, conversational speech: an impact that was not mediated by affect. The obtained noise effect suggests that the meaning in irrelevant sound was processed, to some extent, semantically by the subjects, which disrupted their performance in a cognitive task that also involved processing of meaning. Copyright © 2002 John Wiley & Sons, Ltd.     

黎明模拟光照对晨起睡眠惰性的影响

本研究采用单因素被试内设计对清晨唤醒后睡眠惰性对个体主观情绪、警觉性和认知加工的影响，以及利用动态黎明模拟光照能否对睡眠惰性产生有效的对抗作用进行了考察。结果发现：（1）被试的积极情绪、主观警觉性在刚唤醒时显著低于基线水平，之后随时间推移逐渐提升。（2）被试醒后立即进行测试的认知加工成绩最差，随后逐渐提高，且主要表现在加工速度的回升上。（3）黎明模拟光照对被试醒后在积极情绪、主观警觉性、持续性注意和抑制功能的缓解上产生了明显的促进作用。这表明睡眠惰性会对个体的主客观活动产生显著的负性影响，而使用黎明模拟光照可在一定程度上对抗睡眠惰性带来的负性影响。     

Depth discrimination from shading under diffuse lighting

The human visual system has a remarkable ability to interpret smooth patterns of light on a surface in terms of 3-D surface geometry. Classical studies of shape-from-shading perception have assumed that surface irradiance varies with the angle between the local surface normal and a collimated light source. This model holds, for example, on a sunny day. One common situation in which this model fails to hold, however, is under diffuse lighting such as on a cloudy day. Here we report on the first psychophysical experiments that address shape-from-shading under a uniform diffuse-lighting condition. Our hypothesis was that shape perception can be explained with a perceptual model that "dark means deep". We tested this hypothesis by comparing performance in a depth-discrimination task to performance in a brightness-discrimination task, using identical stimuli. We found a significant correlation between responses in the two tasks, supporting a dark-means-deep model. However, overall performance in the depth-discrimination task was superior to that predicted by a dark-means-deep model. This implies that humans use a more accurate model than dark-means-deep to perceive shape-from-shading under diffuse lighting.     

环境亮度对食品消费决策的影响：食品安全感知的中介作用

本研究考察了环境亮度对食品消费决策的影响,揭示了其发生的心理机制及边界。实验1和实验2发现环境亮度正向影响消费者支付意愿。这一效应的内在机制是因为明亮环境使消费者产生更高的食品安全感知,进而增加其对食品的支付意愿。对产品认证标签的检验进一步验证了安全感知的中介作用 (实验2)。结果表明,当食品具有认证标签时,食品安全感知无法中介环境亮度对消费者支付意愿的影响。     

Influence of seasonally adjusted exposure to cold and darkness on cognitive performance in circumpolar residents

The effects of seasonally adjusted 24-h exposure to cold and darkness on cognitive performance in urban circumpolar residents was assessed in 15 male subjects who spent three 24-h periods in a climatic chamber at 65° latitude during the winter (January–March) and/or summer (August–September). Each subject was exposed to three different environmental conditions in random order: (1) 22 °C temperature and 500 lx lighting; (2) 10 °C temperature and 500 lx lighting; and (3) 10 °C temperature and 0.5–l lx lighting. Accuracy on an addition-subtraction task was significantly greater in the summer than in the winter ( p = 0.038), while accuracy on a repeated acquisition task was significantly greater in the winter than in the summer ( p < 0.001). Independent of season, exposure to cold and darkness was significantly associated with a decline in response time on five cognitive tests, an improvement in accuracy on three tests measuring complex cognitive tasks, and a decline in accuracy on two tests measuring simple tasks. Increased performance on complex tasks may result from increased arousal in response to the combination of cold temperatures and dim light characteristic of the winter in urban circumpolar settings.