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Updated: Jul 1, 2025

Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection

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自传记忆的FMRI相关物:比较静音检索与叙述检索

Charles S Ferris¹, Cory S Inman², Stephan Hamann¹

¹Emory University, Department of Psychology, 36 Eagle Row, Atlanta, GA, 30322, USA.

Neuropsychologia

|March 1, 2024

概括

这项研究使用fMRI比较了静音和口语的自传记忆检索,发现这两种方法都激活了类似的记忆网络. 然而,口语检索参与了语音区域,而无声检索显示出明显的海马和前额叶皮层激活.

科学领域:

神经科学是一个神经科学.
认知心理学认知心理学
神经成像是一种神经成像.

背景情况:

功能性磁共振成像 (fMRI) 对自传记忆 (AM) 检索的研究经常使用无声回忆来防止运动工件.
新兴研究探讨了公开的 (口头) AM检索以捕捉时刻的内容,但其神经影响尚不清楚.

研究的目的:

调查默默与公开的自传记忆检索如何影响fMRI激活模式.
为了比较记忆搜索和阐述阶段的神经动态,跨检索模式.
在自传记忆检索过程中识别特定内容的神经激活.

主要方法:

受试者接受了fMRI扫描,同时在单独的运行中默默地和公开地检索未练习的自传记忆.
检索时间被划分为搜索和编制阶段,以便进行时间动态分析.
语音内容被转录和建模,以检查内容特定的神经相关性.

主要成果:

与叙述式检索相比,沉默式检索显示出前海马和左角环中更大的激活.
叙述检索涉及语音生产区域和后部海马体,而不是静音检索.
这两种模式在搜索 (海马体,mPFC) 和阐述 (DLPFC) 阶段表现出类似的时间动态.
对象内容与侧向尾复合体激活相关,而场景内容与后皮质激活相关.

结论:

自传记忆的检索,无论是沉默的还是口头的,都涉及到在很大程度上重叠的神经网络.
沉默检索和公开检索之间的激活模式的差异突出了特定模式的影响.
使用公开检索的研究人员应该考虑其在记忆回忆过程中对认知和神经过程的潜在影响.

关键词:

自传记忆是一种自传记忆.详细说明详细说明详细说明转向检索检索转向检索检索搜索搜索搜索搜索搜索功能磁力共振成像 (fMRI) 是一种

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