Available evidence suggests enhanced spontaneous emotion regulation in healthy aging, but the effects of specific strategies and the associated age-related neural mechanisms remain unclear. In this study, younger and older participants rated the emotional content of negative and neutral images, after explicit instructions or implicit priming to engage emotional suppression as an emotion regulation strategy, while functional magnetic resonance imaging (fMRI) data were recorded. Participants' memory for the images was also tested 1 week later. Behaviorally, younger and older adults were similarly successful in using explicit suppression to inhibit immediate emotional responses. However, this was associated with reduced long-term memory only for younger adults. fMRI data showed dissociable activity in the lateral prefrontal cortex (PFC) coupled with similar activity in the amygdala in younger and older adults after the engagement of emotional suppression. Results also identified a lateral-to-medial shift in the functional connectivity of the PFC in aging, linked to the engagement of explicit suppression. Regarding memory, younger adults uniquely showed bilateral modulation of encoding-related activity in the hippocampus (HC), as well as a left-lateralized decrease of the HC-PFC functional connectivity after explicit emotional suppression. This is consistent with diminished involvement of typical mechanisms associated with emotional memory because of successful engagement of explicit suppression in younger adults. Taken together, these findings identified similar and differential effects of suppression on immediate emotional responses and long-term memory for emotional information, in younger and older adults, and provide insights into the neural mechanisms by which younger and older adults adaptively cope with emotional challenges. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

中文翻译：

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衰老中情绪抑制的即时和长期影响：功能磁共振成像研究。

现有证据表明，健康衰老可增强自发性情绪调节，但具体策略和与年龄相关的神经机制的影响尚不清楚。在这项研究中，年轻和年长的参与者在明确指示或隐式启动以抑制情绪作为一种情绪调节策略后，对负性和中性图像的情绪内容进行了评估，同时记录了功能磁共振成像（fMRI）数据。1周后还测试了参与者对图像的记忆力。在行为上，年轻人和老年人在使用显式抑制来抑制即时情绪反应方面同样成功。然而，这仅与年轻成年人的长期记忆减少有关。fMRI数据显示，在进行情感抑制后，年轻人和老年人的外侧前额叶皮层（PFC）中的可分离活动与杏仁核中的类似活动相关。结果还确定了PFC在衰老过程中功能连接的从横向到内侧的变化，这与显式抑制的参与有关。关于记忆，较年轻的成年人独特地显示出海马（HC）编码相关活动的双边调节，以及在明确抑制情绪后HC-PFC功能连接性的左旋降低。这与由于年轻人成功地进行显性抑制而减少了与情绪记忆相关的典型机制的参与是一致的。在一起 这些发现确定了抑制作用在年轻人和老年人中对即时情绪反应和情感信息的长期记忆的相似和不同的影响，并提供了对年轻人和老年人适应性应对情绪挑战的神经机制的见解。（PsycInfo数据库记录（c）2020 APA，保留所有权利）。