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情感词语唤起区域和价值特异性模式的同时神经调节器释放在人类的丘脑和皮质
Seth R Batten1, Alec E Hartle2, Leonardo S Barbosa1
1Fralin Biomedical Research Institute at VTC, Virginia Tech, Roanoke, VA 24016, USA.
Cell reports
|January 9, 2025
概括
人类的话语具有情感价值,由多巴胺等大脑化学物质发出信号. 这项研究表明,体和皮质中的这些神经调节器对单词含义做出反应,揭示了人类大脑中复杂的价值信号.
科学领域:
- 神经科学是一个神经科学.
- 心理语言学 心理语言学
- 神经化学 神经化学
背景情况:
- 词语是人类表达思想,感受和情感价值的主要信息通道.
- 神经调节剂如多巴胺,血清素和上腺素都与模型生物中的价值赋值有关.
- 神经调节器信号的扩展到人类的词语语义仍然在很大程度上未被探索.
研究的目的:
- 调查神经调节剂 (多巴胺,血清素,上腺素) 是否在人类词语语义中标志着情感价值.
- 在文字评价过程中测量丘脑和前带皮质中次秒神经调节器动态.
主要方法:
- 在人类参与者中,测量了次秒神经调节器动力学在 thalamus (N=13) 和前带皮质 (N=6) 中.
- 参与者评估了具有正,负和中性价值的单词.
- 分析了区域和价值特异性反应模式,包括半球依赖.
主要成果:
- 价值词显著调节神经调节器释放在质体和前带皮层.
- 响应模式是特定于区域和特定于价值的.
- 前环状皮质中多巴胺释放显示出半球依赖.
结论:
- 神经调节器依赖的价值信号扩展到人类的词语语义.
- 信号传输不是一个简单的每发射器一个价值机制.
- 这些发现突出了神经化学和人类大脑中的语言处理之间的复杂相互作用.
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