Yamashita Gaku, Tanaka Midori, Horiuchi Takahiko
Graduate School of Science and Engineering, Chiba University, Chiba, Japan.
Graduate School of Global and Transdisciplinary Studies, Chiba University, Chiba, Japan.
Iperception. 2022 May 22;13(3):20416695221102191. doi: 10.1177/20416695221102191. eCollection 2022 May.
This study focuses on the analysis of the cross-modal effects between sight (color) and smell (fragrance). While most previous researches have studied the harmony of color and fragrance using small-field colors such as patches and display stimuli, this study analyzes harmony in lighting environments. In our experiments, we focused on the finding that emotional states manifest themselves in responses in the orbitofrontal cortex and used near-infrared spectroscopy to evaluate orbitofrontal responses. Five different aromas were prepared for fragmentation. Initially, the observers were asked to select the most pleasant and least unpleasant aromas. The two selected aromas were soaked in non-fat cotton cloth and placed in a light-shielding brown bottle, which was used as a scent stimulus. For the lighting environment, 36 different lighting colors were designed using a luminaire consisting of 14 LEDs. The results of the experiment showed that the lighting color that the observers judged to be harmonious by actually smelling the fragrance (sensory color) activated the orbitofrontal cortex more than the lighting color that they judged to be harmonious by recalling the name of the fragrance (imagery color).
本研究聚焦于视觉（颜色）与嗅觉（香气）之间的跨模态效应分析。尽管此前大多数研究使用诸如色块和显示刺激等小范围颜色来研究颜色与香气的协调性，但本研究分析的是照明环境中的协调性。在我们的实验中，我们关注到情绪状态会在眶额叶皮层的反应中表现出来，并使用近红外光谱来评估眶额叶的反应。准备了五种不同的香气用于碎片化处理。最初，要求观察者选出最宜人以及最不令人不快的香气。将这两种选定的香气浸泡在脱脂棉布中，并放置在遮光的棕色瓶子里，用作气味刺激。对于照明环境，使用由14个发光二极管组成的灯具设计了36种不同的照明颜色。实验结果表明，观察者通过实际闻香气（感官颜色）判断为协调的照明颜色比通过回忆香气名称（意象颜色）判断为协调的照明颜色更能激活眶额叶皮层。
