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相关概念视频

Long-term Depression01:03

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over time, all...

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相关实验视频

Updated: Jul 14, 2026

Measuring Cardiac Autonomic Nervous System (ANS) Activity in Toddlers - Resting and Developmental Challenges
08:22

Measuring Cardiac Autonomic Nervous System (ANS) Activity in Toddlers - Resting and Developmental Challenges

Published on: February 25, 2016

抑制和无抑制的婴儿"长大":成年杏仁体对新奇事物的反应.

Carl E Schwartz1, Christopher I Wright, Lisa M Shin

  • 1Developmental Psychopathology Research Group, Department of Psychiatry, Massachusetts General Hospital (MGH), Harvard Medical School, 13th Street, Building 149, CNY-9, Charlestown, MA 02129, USA. carl_schwartz@hms.harvard.edu

Science (New York, N.Y.)
|June 21, 2003
PubMed
概括

患有抑制性情的婴儿,以逃避为特征,对新奇事物表现出持久的杏仁体反应. 没有抑制的孩子,接近新奇,在以后的生活中表现出较低的杏仁体反应.

科学领域:

  • 发展心理学是发展心理学.
  • 神经科学是一个神经科学.
  • 行为遗传学行为遗传学

背景情况:

  • 气质,分为受抑制或不受抑制,从婴儿时期就会影响对新奇事物的行为反应.
  • 抑制的婴儿会避开新奇的东西,而不受抑制的婴儿会接近它.
  • 这些气质特征在青春期表现出适度的稳定性,可能与杏仁体功能有关.

研究的目的:

  • 调查婴儿气质和杏仁体对成人新奇事物的反应之间的长期关系.
  • 确定早期识别的抑制性气质是否预测了杏仁体对新兴刺激的反应性改变.

主要方法:

  • 纵向研究对婴儿期参与者的气质进行了分类 (受抑制与不受抑制).
  • 功能性磁共振成像 (fMRI) 用于测量成年人桃体活动.
  • 参与者在fMRI扫描期间看到了新鲜和熟悉的面孔.

主要成果:

  • 以前被归类为婴儿期受抑制的成年人在杏仁体中表现出显著更大的功能性MRI信号响应.
  • 这种增强的杏仁体反应是在观察新鲜的面孔与熟悉的面孔相比时观察到的.
  • 相反,以前被归类为无抑制的成年人对新面孔的杏仁体反应相对较低.

结论:

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Neurodevelopmental Reflex Testing in Neonatal Rat Pups
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Neurodevelopmental Reflex Testing in Neonatal Rat Pups

Published on: April 24, 2017

Analysis of Effect of Compound Salt Stress on Seed Germination and Salt Tolerance Analysis of Pepper (Capsicum annuum L.)
08:27

Analysis of Effect of Compound Salt Stress on Seed Germination and Salt Tolerance Analysis of Pepper (Capsicum annuum L.)

Published on: November 30, 2022

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Measuring Cardiac Autonomic Nervous System (ANS) Activity in Toddlers - Resting and Developmental Challenges
08:22

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Published on: February 25, 2016

Neurodevelopmental Reflex Testing in Neonatal Rat Pups
09:35

Neurodevelopmental Reflex Testing in Neonatal Rat Pups

Published on: April 24, 2017

Analysis of Effect of Compound Salt Stress on Seed Germination and Salt Tolerance Analysis of Pepper (Capsicum annuum L.)
08:27

Analysis of Effect of Compound Salt Stress on Seed Germination and Salt Tolerance Analysis of Pepper (Capsicum annuum L.)

Published on: November 30, 2022

  • 儿童早期的抑制性情与成年时杏仁体对新奇事物的反应能力的持久差异有关.
  • 这些发现支持了桃体反应变化有助于气质特征的稳定性的假设.
  • 这项研究突出了个体在行为抑制和方法上的差异的神经生物学基础.