Optical imaging during toddlerhood: brain responses during naturalistic social interactions
Optical imaging during toddlerhood: brain responses during naturalistic social interactions
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DOI：
10.1117/1.nph.5.1.011020
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发表时间：
2018-01-01
期刊：
影响因子：
5.3
通讯作者：
Lloyd-Fox, Sarah
中科院分区：
文献类型：
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作者：
Hakuno, Yoko;Pirazzoli, Laura;Lloyd-Fox, Sarah
尽管我们与他人互动和交流的能力很重要，但社会性大脑网络的早期发展仍然知之甚少。我们检查了12到14个月大的婴儿在两种不同的自然主义社会场景中与成人互动时的大脑活动（即，阅读图画书对比用手势唱童谣），与基线（即，向婴儿展示玩具而不进行眼神接触或讲话）。我们使用功能性近红外光谱（fNIRS）记录在右颞叶的婴儿，以评估的作用，上级颞沟-颞顶交界（STS-TPJ）地区在自然的社会互动。我们观察到，与基线相比，在真实的生活互动中，在两种社会参与条件下，STS-TPJ区域对生活社会刺激的皮层激活增加，相对于社会童谣，联合注意（阅读书）条件的激活更大。这些结果支持了这样的观点，即参与皮层社会脑网络的STS-TPJ区域在婴儿时期已经专门用于处理社会信号，并且对交际情况敏感。这项研究还强调了fNIRS在研究婴儿在现场社会互动中进入幼儿期的大脑功能方面的潜力。(C)2018年，摄影光学仪器工程师协会（SPIE）
Despite the importance of our ability to interact and communicate with others, the early development of the social brain network remains poorly understood. We examined brain activity in 12- to 14-month-old infants while they were interacting live with an adult in two different naturalistic social scenarios (i.e., reading a picture book versus singing nursery rhymes with gestures), as compared to baseline (i.e., showing infants a toy without eye contact or speech). We used functional near-infrared spectroscopy (fNIRS) recorded over the right temporal lobe of infants to assess the role of the superior temporal sulcus-temporoparietal junction (STS-TPJ) region during naturalistic social interactions. We observed increased cortical activation in the STS-TPJ region to live social stimuli in both socially engaging conditions compared to baseline during real life interaction, with greater activation evident for the joint attention (reading book) condition relative to the social nursery rhymes. These results supported the view that the STS-TPJ region, engaged in the cortical social brain network, is already specialized in infants for processing social signals and is sensitive to communicative situations. This study also highlighted the potential of fNIRS for studying brain function in infants entering toddlerhood during live social interaction. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)