Dorsolateral prefrontal contributions to human working memory.

Dorsolateral prefrontal contributions to human working memory.
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DOI:
10.1016/j.cortex.2012.05.022
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发表时间:
2013-05
期刊:
Cortex; a journal devoted to the study of the nervous system and behavior
影响因子:
--
通讯作者:
Grafman J
Grafman J
中科院分区:
其他
文献类型:
--
作者:
Barbey AK;Koenigs M;Grafman J

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尽管神经科学在理解前额叶皮层参与人类记忆方面取得了显著进展,但背外侧前额叶皮层(dlPFC)对工作记忆关键能力的必要性仍未得到充分探索。因此,我们研究了人类脑损伤患者,以确定dlPFC是否是工作记忆功能所必需的,并对三个参与者组进行了韦氏记忆量表、韦氏成人智力量表和n- back任务的亚测试:dlPFC病变(n = 19)、非dlPFC病变(n = 152)和无脑损伤(n = 54)。DlPFC损伤与语言和空间知识操作缺陷有关,左侧DlPFC是操作工作记忆信息的必要条件,而右侧DlPFC则是在更广泛的推理环境中操作信息的关键条件。我们的研究结果阐明了工作记忆的结构,为dlPFC在语言和空间知识操作中的必要性提供了关键的神经心理学证据。
Although neuroscience has made remarkable progress in understanding the involvement of prefrontal cortex in human memory, the necessity of dorsolateral prefrontal cortex (dlPFC) for key competencies of working memory remains largely unexplored. We therefore studied human brain lesion patients to determine whether dlPFC is necessary for working memory function, administering subtests of the Wechsler Memory Scale, the Wechsler Adult Intelligence Scale, and the N-Back Task to three participant groups: dlPFC lesions (n = 19), non-dlPFC lesions (n = 152), and no brain lesions (n = 54). DlPFC damage was associated with deficits in the manipulation of verbal and spatial knowledge, with left dlPFC necessary for manipulating information in working memory and right dlPFC critical for manipulating information in a broader range of reasoning contexts. Our findings elucidate the architecture of working memory, providing key neuropsychological evidence for the necessity of dlPFC in the manipulation of verbal and spatial knowledge.
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