Hakonen Maria, Ikäheimonen Arsi, Hultèn Annika, Kauttonen Janne, Koskinen Miika, Lin Fa-Hsuan, Lowe Anastasia, Sams Mikko, Jääskeläinen Iiro P
Brain and Mind Laboratory, Department of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076 Espoo, Finland.
Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
Brain Sci. 2022 May 15;12(5):649. doi: 10.3390/brainsci12050649.
Perception of the same narrative can vary between individuals depending on a listener's previous experiences. We studied whether and how cultural family background may shape the processing of an audiobook in the human brain. During functional magnetic resonance imaging (fMRI), 48 healthy volunteers from two different cultural family backgrounds listened to an audiobook depicting the intercultural social life of young adults with the respective cultural backgrounds. Shared cultural family background increased inter-subject correlation of hemodynamic activity in the left-hemispheric Heschl's gyrus, insula, superior temporal gyrus, lingual gyrus and middle temporal gyrus, in the right-hemispheric lateral occipital and posterior cingulate cortices as well as in the bilateral middle temporal gyrus, middle occipital gyrus and precuneus. Thus, cultural family background is reflected in multiple areas of speech processing in the brain and may also modulate visual imagery. After neuroimaging, the participants listened to the narrative again and, after each passage, produced a list of words that had been on their minds when they heard the audiobook during neuroimaging. Cultural family background was reflected as semantic differences in these word lists as quantified by a word2vec-generated semantic model. Our findings may depict enhanced mutual understanding between persons who share similar cultural family backgrounds.
对于同一叙述的感知在个体之间可能会有所不同，这取决于听众以前的经历。我们研究了文化家庭背景是否以及如何塑造人类大脑中对有声读物的处理过程。在功能磁共振成像（fMRI）期间，来自两种不同文化家庭背景的48名健康志愿者听了一本有声读物，该读物描绘了具有各自文化背景的年轻人的跨文化社交生活。共享的文化家庭背景增加了左半球赫氏回、脑岛、颞上回、舌回和颞中回、右半球枕外侧和后扣带回皮质以及双侧颞中回、枕中回和楔前叶血流动力学活动的受试者间相关性。因此，文化家庭背景反映在大脑中多个言语处理区域，并且可能还会调节视觉意象。在神经成像之后，参与者再次听这个叙述，并且在每一段之后，列出在神经成像期间听到有声读物时他们脑海中出现的单词列表。文化家庭背景表现为这些单词列表中的语义差异，这些差异由词向量生成的语义模型进行量化。我们的研究结果可能描绘了具有相似文化家庭背景的人之间增强的相互理解。
