了解利他主义行为:前额损伤和OXTR基因型的联合作用
Ekaterina Delikishkina1, Shira Cohen-Zimerman1, Zachary R Kachian2
1Cognitive Neuroscience Laboratory, Brain Injury Research, Shirley Ryan AbilityLab, Chicago, IL, 60611, USA; Department of Physical Medicine and Rehabilitation, Feinberg School of Medicine, Northwestern University, Chicago, IL, 60611, USA.
Neuropsychologia
|September 23, 2023
概括
脑损伤可能会增加催产素受体 (OXTR) 基因对利他主义的影响. 具体来说,前额叶皮层损伤放大了OXTR遗传变异如何影响退伍军人的亲社会行为.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 心理学 心理学 心理学
背景情况:
- 利他主义,一种没有个人利益的行为,因个人而异.
- 催产素受体 (OXTR) 基因和前额叶皮质 (PFC) 都与利他主义有关.
- PFC的自上而下的控制可能会使理解OXTR在利他主义中的作用变得复杂.
研究的目的:
- 调查PFC损伤是否增强了OXTR基因型对利他主义态度和行为的影响.
- 探索OXTR和PFC病变中的遗传变异与亲社会行为的相互作用.
主要方法:
- 招募了115名PFC创伤性脑损伤的男性战斗老兵和35名对照人.
- 管理了一份自我报告的利他主义问卷.
- 四个OXTR单核酸多态 (SNP) 的基因型参与者:rs53576,rs1042778,rs2254298和rs7632287.
主要成果:
- 对于rs53576和rs7632287的G等位基 homozygous个体显示出更高的利他主义.
- 在患有PFC损伤的患者中,较大的病变程度与较低的利他主义得分相关. rs7632287 A基因基因携带者.
- 这种效应没有在G-homozygotes中观察到,这表明PFC破坏的遗传影响增加.
结论:
- PFC损伤可以放大OXTR基因型对亲社会行为的影响.
- 这项研究表明,OXTR基因型与脑损伤的程度/位置之间存在一种新的相互作用.
- 研究结果表明,当更高层次的认知控制受到损害时,对利他主义的遗传倾向可能会变得更加明显.
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