婴儿的性别会影响婴儿早期对情感触摸的神经反应
Isabella L C Mariani Wigley1, Malin Björnsdotter2,3, Noora M Scheinin4,5
1Department of Developmental and Social Psychology, University of Padua, Padua, Italy.
Developmental psychobiology
|October 20, 2023
概括
新生儿大脑对温柔触摸的反应显示性别差异. 与男性相比,女性婴儿在与社会处理和奖励相关的领域表现出更大的活化,这表明社会接触途径的早期分歧.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 人类婴儿研究研究.
背景情况:
- 社会接触对于人类的社会联系至关重要.
- 轻柔触摸的早期感官通路在出生时就存在.
- 大脑发育表现出性二态,但其对触摸处理的影响尚不清楚.
研究的目的:
- 为了研究新生儿大脑激活到温柔的触觉刺激的基于性别的差异.
- 为了探索如何轻柔的皮肤抚摸影响大脑活动不同于男性和女性的婴儿.
主要方法:
- 功能磁共振成像 (fMRI) 用于测量18名新生儿 (11-36天) 的大脑活动.
- 在自然睡眠期间,对腿部施加温和的皮肤刷毛.
- 对性别差异分析了血液氧化水平依赖 (BOLD) 反应和心理生理相互作用 (PPI).
主要成果:
- 与男性相比,女性新生儿在轨道前皮层 (OFC),腹部和下部条纹体,子和小脑中显示出明显更大的BOLD反应.
- 对PPI的分析显示,女性左侧OFC和后侧环膜/骨之间的功能连接性更强.
- 在皮下大脑区域观察到两性异形反应.
结论:
- 新生儿对社交触摸的神经反应具有性二态性.
- 这些早期的差异可能会影响后来的大脑,认知和社会发展.
- fMRI是研究婴儿皮下性质二态反应的宝贵工具.
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