Dopaminergic circuits controlling threat and safety learning.

IF 14.6 1区 医学 Q1 NEUROSCIENCES
Sevil Duvarci
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引用次数: 0

Abstract

The ability to learn from experience that certain cues and situations are associated with threats or safety is crucial for survival and adaptive behavior. Understanding the neural substrates of threat and safety learning has high clinical significance because deficits in these forms of learning characterize anxiety disorders. Traditionally, dopamine neurons were thought to uniformly support reward learning by signaling reward prediction errors. However, the dopamine system is functionally more diverse than was initially appreciated and is also critical for processing threat and safety. In this review, I highlight recent studies demonstrating that dopamine neurons generate prediction errors for threat and safety, and describe how dopamine projections to the amygdala, medial prefrontal cortex (mPFC), and striatum regulate associative threat and safety learning.

控制威胁和安全学习的多巴胺能回路
从经验中学习某些线索和情境与威胁或安全相关联的能力对于生存和适应行为至关重要。了解威胁和安全学习的神经基质具有重要的临床意义,因为这些形式的学习缺陷是焦虑症的特征。传统上,多巴胺神经元被认为是通过提示奖赏预测错误来统一支持奖赏学习的。然而,多巴胺系统在功能上比最初认识到的更加多样化,而且对于处理威胁和安全问题也至关重要。在这篇综述中,我重点介绍了最近的一些研究,这些研究表明多巴胺神经元会产生威胁和安全的预测错误,并描述了多巴胺投射到杏仁核、内侧前额叶皮层(mPFC)和纹状体是如何调节联想威胁和安全学习的。
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来源期刊
Trends in Neurosciences
Trends in Neurosciences 医学-神经科学
CiteScore
26.50
自引率
1.30%
发文量
123
审稿时长
6-12 weeks
期刊介绍: For over four decades, Trends in Neurosciences (TINS) has been a prominent source of inspiring reviews and commentaries across all disciplines of neuroscience. TINS is a monthly, peer-reviewed journal, and its articles are curated by the Editor and authored by leading researchers in their respective fields. The journal communicates exciting advances in brain research, serves as a voice for the global neuroscience community, and highlights the contribution of neuroscientific research to medicine and society.
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