Spectral quality of light modulates emotional brain responses in humans
Spectral quality of light modulates emotional brain responses in humans
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DOI：
10.1073/pnas.1010180107
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发表时间：
2010-11-09
影响因子：
11.1
通讯作者：
Maquet, P.
中科院分区：
文献类型：
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作者：
Vandewalle, G.;Schwartz, S.;Maquet, P.
光疗法可以有效治疗情绪障碍，这表明光能够长期影响情绪状态。作为理解这种效应的第一步，我们假设光线也可能会严重影响情绪，并测试了短时间暴露于光线是否会调节情绪大脑反应。在功能磁共振成像，17名健康志愿者听情绪和中性的声音刺激，同时暴露于交替的40秒周期的蓝色或绿色环境光。蓝色（相对于绿色）光增加了颞叶皮层语音区和海马体对情绪刺激的反应。在情绪处理过程中，语音区，杏仁核和下丘脑之间的功能连接选择性增强的背景下，蓝色照明，这表明，在下丘脑和杏仁核的情绪刺激的反应是由语音区的语音信息的解码和环境光的光谱质量的影响。这些结果证明了光及其光谱质量对情绪大脑处理的急性影响，并确定了一个独特的融合情感和环境光信息的网络。
Light therapy can be an effective treatment for mood disorders, suggesting that light is able to affect mood state in the long term. As a first step to understand this effect, we hypothesized that light might also acutely influence emotion and tested whether short exposures to light modulate emotional brain responses. During functional magnetic resonance imaging, 17 healthy volunteers listened to emotional and neutral vocal stimuli while being exposed to alternating 40-s periods of blue or green ambient light. Blue (relative to green) light increased responses to emotional stimuli in the voice area of the temporal cortex and in the hippocampus. During emotional processing, the functional connectivity between the voice area, the amygdala, and the hypothalamus was selectively enhanced in the context of blue illumination, which shows that responses to emotional stimulation in the hypothalamus and amygdala are influenced by both the decoding of vocal information in the voice area and the spectral quality of ambient light. These results demonstrate the acute influence of light and its spectral quality on emotional brain processing and identify a unique network merging affective and ambient light information.