Auditory Recognition Memory in 2-Month-Old Infants as Assessed by Event-Related Potentials

被引:18
|
作者
Mai, Xiaoqin [2 ]
Xu, Lin [1 ]
Li, Mingyan [1 ]
Shao, Jie [1 ]
Zhao, Zhengyan [1 ]
deRegnier, Raye-Ann [3 ]
Nelson, Charles A. [4 ]
Lozoff, Betsy [2 ,5 ]
机构
[1] Zhejiang Univ, Sch Med, Childrens Hosp, Hangzhou 310003, Zhejiang, Peoples R China
[2] Univ Michigan, Ctr Human Growth & Dev, Ann Arbor, MI 48109 USA
[3] Northwestern Univ, Dept Pediat, Feinberg Sch Med, Chicago, IL 60611 USA
[4] Harvard Univ, Sch Med, Childrens Hosp Boston, Boston, MA USA
[5] Univ Michigan, Dept Pediat & Communicable Dis, Ann Arbor, MI 48109 USA
基金
中国国家自然科学基金; 美国国家卫生研究院;
关键词
VOICE DISCRIMINATION; NEWBORN-INFANTS; VISUAL-STIMULI; SPEECH SOUNDS; ATTENTION; AGE; PREFERENCES; 4-MONTH-OLD; RESPONSES; SLEEP;
D O I
10.1080/87565641.2011.650807
中图分类号
B844 [发展心理学(人类心理学)];
学科分类号
040202 ;
摘要
Previous studies of auditory recognition memory in sleeping newborns reported 2 event-related potential (ERP) components, P2 and negative slow wave (NSW), reflecting voice discrimination and detection of novelty, respectively. In the present study, using high-density recording arrays, ERPs were acquired from 26 2-month-old awake infants as they were presented with a familiar and unfamiliar voice (i.e., mother and stranger) with equal probability. In addition to P2 and NSW, we observed a positive slow wave (PSW) over the right temporo-parietal scalp, indicating memory updating. Our study suggests that infants appear to have the capacity to encode novel stimuli as early as 2 months of age.
引用
收藏
页码:400 / 414
页数:15
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