Adult hippocampal neurogenesis and cognitive flexibility - linking memory and mood.

Adult hippocampal neurogenesis and cognitive flexibility - linking memory and mood.
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DOI:
10.1038/nrn.2017.45
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发表时间:
2017-06
期刊:
Nature reviews. Neuroscience
影响因子:
--
通讯作者:
Hen R
Hen R
中科院分区:
其他
文献类型:
--
作者:
Anacker C;Hen R

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成年海马区的神经发生与认知过程有关,如模式分离,以及应激和抗抑郁药物的行为效应。年轻的成年出生的神经元被证明通过招募局部中间神经元来抑制齿状回的整体活动,这可能导致稀疏的上下文表征和改善的模式分离。我们认为,神经发生介导的抑制也减少了记忆干扰,并能够在中性和情绪激动的情况下进行反向学习。这种认知灵活性的提高反过来可能有助于减少类似焦虑和抑郁的行为。
Adult hippocampal neurogenesis has been implicated in cognitive processes, such as pattern separation, and in the behavioural effects of stress and antidepressants. Young adult-born neurons have been shown to inhibit the overall activity of the dentate gyrus by recruiting local interneurons, which may result in sparse contextual representations and improved pattern separation. We propose that neurogenesis-mediated inhibition also reduces memory interference and enables reversal learning both in neutral situations and in emotionally charged ones. Such improved cognitive flexibility may in turn help to decrease anxiety-like and depressive-like behaviour.
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