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

作者：Mai, Xiaoqin; Xu, Lin; Li, Mingyan; Shao, Jie; Zhao, Zhengyan^*; deRegnier, Raye-Ann; Nelson, Charles A.; Lozoff, Betsy

来源：Developmental Neuropsychology, 2012, 37(5): 400-414.

DOI：10.1080/87565641.2011.650807

• VOICE DISCRIMINATION
• NEWBORN-INFANTS
• VISUAL-STIMULI
• SPEECH SOUNDS
• ATTENTION
• AGE
• PREFERENCES
• 4-MONTH-OLD
• RESPONSES
• SLEEP

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.

• 出版日期2012
• 单位西北大学; 浙江大学