Vagal tone as a biomarker of long-term memory for a stressful social event at 4 months.

Vagal tone as a biomarker of long-term memory for a stressful social event at 4 months.
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迷走神经张力作为 4 个月大压力社交事件长期记忆的生物标志物。

DOI:
10.1002/dev.21251
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发表时间:
2014
影响因子:
2.2
通讯作者:
Borgatti,Renato
Borgatti,Renato
中科院分区:
心理学4区
文献类型:
--
作者:
Montirosso,Rosario;Provenzi,Livio;Tronick,Ed;Morandi,Francesco;Reni,Gianluigi;Borgatti,Renato

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本研究利用行为和呼吸性窦性心律失常(RSA)研究了15天后婴儿对社会压力的记忆。实验组婴儿接受两次面对面静止脸范式(FFSF);第一次在4个月和间隔2周后。对照组婴儿在4个月加2周时仅接触一次FFSF。根据首次FFSF暴露时RSA变化的方向,将婴儿分为抑制者或非抑制者。各组和暴露条件之间没有发现行为差异。在实验组中,当再次暴露于FFSF 2周后,抑制因子发生了变化,没有表现出抑制。从第一次到第二次FFSF暴露中,非抑制因子的RSA没有变化。对照婴儿在第一次接触时表现出与实验婴儿相似的RSA变化。研究结果表明,4个月大的婴儿对社会压力的记忆与自主反应的个体差异有关。©2014Wiley期刊公司心理科学进展,2014,31(6):564 - 574。
This study investigates infants' memory for social stress after a 15‐day retention interval using behavior and respiratory sinus arrhythmia (RSA). Experimental group infants were exposed to face‐to‐face still‐face paradigm (FFSF) two times; the first time at 4 months and after a 2‐week interval. Control group infants were exposed to FFSF only once at 4 months plus 2 weeks. Infants were categorized as suppressors or non‐suppressors based on the direction of RSA change at first FFSF exposure. No behavioral differences were found among groups and exposure conditions. In the experimental group suppressors changed and showed no suppression when re‐exposed 2 weeks later to FFSF. Non‐suppressors showed no change in RSA from the first to the second exposure to FFSF. Control infants showed similar RSA changes to experimental infants at their first exposure. Findings indicate that 4‐month‐old infants have memory for social stress related to individual differences in autonomic reactivity. © 2014Wiley Periodicals, Inc. Dev Psychobiol 56: 1564–1574, 2014.
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