在子中,对情感触摸的进化保存的神经反应超越了意识,并且随着年龄的增长而改变
Joey A Charbonneau1,2, Anthony C Santistevan2,3, Erika P Raven4
1Neuroscience Graduate Program, University of California, Davis, CA 95616.
概括
情感触摸激活子的大脑特定区域,类似于人类. 这种神经反应在灵长类动物中保留,但随着年龄的增长而减弱,不需要有意识的感知.
科学领域:
- 神经科学是一个神经科学.
- 身体上的感觉 (somatosensation) 是一种感觉.
- 灵长类动物研究研究
背景情况:
- 情感触摸,与歧视性触摸不同,由专业的触觉 (CT) 触感器进行处理.
- 在哺乳动物中保存了CT afferent通路,但灵长类动物的神经表征在很大程度上仍未研究.
- 意识感知对于情感触摸的必要性,以吸引社会情感大脑枢纽是未知的.
研究的目的:
- 为了研究非人类灵长类动物中情感触摸的神经表征.
- 为了比较灵长类大脑中的情感和歧视性触摸处理.
- 为了确定是否需要有意识的感知情感触摸来激活社会情感大脑枢纽.
主要方法:
- 功能磁共振成像 (fMRI) 用于麻醉的 rhesus 子.
- 应用了缓慢 (情感) 和快速 (歧视) 的触摸刺激.
- 分析了关键大脑区域的神经激活模式.
主要成果:
- 与快速触摸相比,缓慢的触摸优先激活胰岛,前带皮质 (ACC),杏仁体和二级体感皮质.
- 这些发现表明,在灵长类物种中,互感全静电网络的同源激活.
- 在较年轻的子中,神经响应在insula和ACC中在触摸类型之间有区别,但在老子中没有区别.
结论:
- 对情感触摸的神经反应在子中是进化保存的.
- 衰老显著影响了神经处理情感触摸的过程.
- 有意识的感知不需要情感触摸来激活社会情感大脑枢纽.
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