How do infants perceive scrambled face?: A near-infrared spectroscopic study
How do infants perceive scrambled face?: A near-infrared spectroscopic study
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DOI：
10.1016/j.brainres.2009.10.046
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发表时间：
2010-01-13
期刊：
影响因子：
2.9
通讯作者：
Kakigi, Ryusuke
中科院分区：
文献类型：
--
作者：
Honda, Yukiko;Nakato, Emi;Kakigi, Ryusuke
利用近红外光谱技术（NIRS），我们记录了7 ~ 8个月大婴儿和成人大脑中氧合血红蛋白（oxy-Hb）、脱氧血红蛋白（deoxy-Hb）和总血红蛋白（total-Hb）在典型面孔和杂乱面孔刺激下的变化。使用新开发的NIRS记录探头，该探头轻而软，足以让婴儿耐受，即使在清醒状态下，我们也能够从非常年幼的婴儿那里获得数据。总血红蛋白在响应一个典型的脸刺激大于杂乱的脸刺激，只有在右半球的婴儿。这表明，在7至8个月大的婴儿中，右半球在大脑活动中占主导地位。在成人中，仅右半球的典型面孔的氧合血红蛋白和总血红蛋白从基线显著增加。与左半球相比，右半球的典型面孔有更多的通道显示出显著增加的活动。这些数据表明，无论是婴儿还是成人，右半球在典型面部感知方面都更占主导地位。然而，总的来说，总血红蛋白和氧合血红蛋白在成人中的增加是温和的婴儿相比。虽然婴儿和成人之间的差异的原因尚不清楚，除了影响面部知觉的发育变化，可能存在一些方法上的问题。因此，由于我们使用相同的方法记录了婴儿和成人的NIRS信号，解剖和生理问题可能会在一定程度上影响结果。虽然比较婴儿和成人之间的结果并不简单，本研究是第一个表明7至8个月大的婴儿如何感知杂乱的面部刺激，并将这些结果与成人进行比较，以了解面部感知的发展变化。(C)2009爱思唯尔有限公司版权所有。
Using near-infrared spectroscopy (NIRS), we recorded changes of oxy-Hb, deoxy-Hb, and total-Hb in 7- to 8-month-old infants' and adults' brains in response to canonical face and scrambled face stimuli. Using a newly developed probe for NIRS recording, which was light and soft enough to be tolerated by infants, we were able to acquire data from the very young even in the awake state. Total-Hb in response to a canonical face stimulus was greater than for scrambled face stimuli only in the right hemisphere in infants. This indicates the presence of right hemisphere dominance of brain activity in response to face images in 7- to 8-month-old infants. in adults, oxy-Hb and total-Hb were significantly increased from baseline only for the canonical face in the right hemisphere. There were greater numbers of channels showing significantly increased activity for the canonical face in the right than in the left hemisphere. These data indicate that the right hemisphere is more dominant for canonical face perception in both infants and adults. However, overall, the increase of total-Hb and oxy-Hb in adults was modest compared to infants. Although the reason for the difference between infants and adults is unclear, in addition to developmental changes influencing face perception, some methodological problems may be present. Thus, because we recorded NIRS signals in infants and adults using the same method, anatomical and physiological problems might affect the results to some degree. Although comparing the results between infants and adults is not simple, the present study is the first to indicate how 7- to 8-month-old infants perceive scrambled face stimuli and to compare such results with those of adults in order to understand developmental changes in face perception. (C) 2009 Elsevier B.V. All rights reserved.