Attention affects the recognition of briefly presented visual stimuli in infants: an ERP study
Attention affects the recognition of briefly presented visual stimuli in infants: an ERP study
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DOI：
10.1111/1467-7687.00287
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发表时间：
2003-06-01
影响因子：
3.7
通讯作者：
Richards, JE
中科院分区：
文献类型：
--
作者：
Richards, JE
本研究探讨了婴儿在识别简单视觉刺激时注意对ERP变化的影响。婴儿在4.5，6和7.5个月的芝麻街电影，引起注意和注意力不集中的时期，和计算机生成的刺激，提出了覆盖在电影上的500英寸。一个刺激是熟悉的婴儿，并提出频繁，第二个刺激是熟悉的，但很少提出，和一组14个新的刺激很少提出。ERP组件标记的“NC”（负中央，约450-550毫秒后刺激发作）是较大的注意力比注意力不集中，并增加了在三个测试年龄在注意力。ERP中的晚期慢波（从刺激后1000至2000 ms）包括在所有三个测试年龄对不常见的熟悉刺激的反应中的正慢波。在注意过程中，对不常见的新刺激的反应，4.5个月大的婴儿是正慢波，6个月大的婴儿是正-负慢波，7.5个月大的婴儿是负慢波。这些结果表明，注意促进了婴儿再认记忆过程中的大脑反应，并表明再认记忆的发展变化与注意的变化密切相关。
This study examined the effect of attention in infants on the ERP changes occurring during the recognition of briefly presented visual stimuli. Infants at ages 4.5, 6 and 7.5 months were presented with a Sesame Street movie that elicited periods of attention and inattention, and computer-generated stimuli were presented overlaid on the movie for 500 ins. One stimulus was familiar to the infants and was presented frequently, a second stimulus was familiar but presented infrequently, and a set of 14 novel stimuli were presented infrequently. An ERP component labeled the 'Nc' (Negative Central, about 450-550 ms after stimulus onset) was larger during attention than inattention and increased in magnitude over the three testing ages during attention. Late slow waves in the ERP (from 1000 to 2000 ms post-stimulus onset) consisted of a positive slow wave in response to the infrequent familiar stimulus at all three testing ages. The late slow wave in response to the infrequent novel stimulus during attention was a positive slow wave for the 4.5-month-old infants, to a positive-negative slow wave for the 6-month-old infants and a negative slow wave for the 7.5-month-old infants. These results show attention facilitates the brain response during infant recognition memory and show that developmental changes in recognition memory are closely related to changes in attention.