自传体记忆提取过程中杏仁核、海马体和额下回的共同激活。
Co-activation of the amygdala, hippocampus and inferior frontal gyrus during autobiographical memory retrieval.
作者信息
Greenberg Daniel L, Rice Heather J, Cooper Julie J, Cabeza Roberto, Rubin David C, Labar Kevin S
机构信息
Psychological and Brain Sciences, Duke University, Durham, NC 27708-0999, USA.
出版信息
Neuropsychologia. 2005;43(5):659-74. doi: 10.1016/j.neuropsychologia.2004.09.002.
Functional MRI was used to investigate the role of medial temporal lobe and inferior frontal lobe regions in autobiographical recall. Prior to scanning, participants generated cue words for 50 autobiographical memories and rated their phenomenological properties using our autobiographical memory questionnaire (AMQ). During scanning, the cue words were presented and participants pressed a button when they retrieved the associated memory. The autobiographical retrieval task was interleaved in an event-related design with a semantic retrieval task (category generation). Region-of-interest analyses showed greater activation of the amygdala, hippocampus, and right inferior frontal gyrus during autobiographical retrieval relative to semantic retrieval. In addition, the left inferior frontal gyrus showed a more prolonged duration of activation in the semantic retrieval condition. A targeted correlational analysis revealed pronounced functional connectivity among the amygdala, hippocampus, and right inferior frontal gyrus during autobiographical retrieval but not during semantic retrieval. These results support theories of autobiographical memory that hypothesize co-activation of frontotemporal areas during recollection of episodes from the personal past.
功能磁共振成像被用于研究内侧颞叶和额下回区域在自传体回忆中的作用。在扫描前,参与者为50个自传体记忆生成提示词,并使用我们的自传体记忆问卷(AMQ)对其现象学特征进行评分。在扫描过程中,呈现提示词,参与者在检索到相关记忆时按下按钮。自传体检索任务在与语义检索任务(类别生成)的事件相关设计中交替进行。感兴趣区域分析显示,与语义检索相比,自传体检索过程中杏仁核、海马体和右下额回的激活更强。此外,左下额回在语义检索条件下显示出更长的激活持续时间。一项针对性的相关分析显示,自传体检索过程中杏仁核、海马体和右下额回之间存在明显的功能连接,而在语义检索过程中则不存在。这些结果支持了自传体记忆理论,该理论假设在从个人过去回忆事件时,额颞区域会共同激活。