Theta Oscillations in Human Memory.

Theta Oscillations in Human Memory.
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DOI:
10.1016/j.tics.2019.12.006
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发表时间:
2020-03
影响因子:
19.9
通讯作者:
Kahana MJ
Kahana MJ
中科院分区:
心理学1区
文献类型:
--
作者:
Herweg NA;Solomon EA;Kahana MJ

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局部场电位的θ频率(4- 8Hz)波动长期以来一直与学习和记忆有关。然而,人类对情景记忆的研究为θ在成功学习和记忆中的作用提供了混合证据。重新评估这些相互矛盾的发现使我们得出以下结论:(1)成功的记忆与增加的窄带θ振荡和功率谱的宽带倾斜有关;(2)θ振荡特别支持联想记忆,而谱倾斜反映了激活的一般指数;以及(3)不同的认知对比(一般化与特定于记忆),记录技术(侵入性对非侵入性)和参考方案(局部对全局)改变了两种现象之间的平衡,以使一种或另一种更容易检测。
Theta frequency (4–8 Hz) fluctuations of the local field potential have long been implicated in learning and memory. Human studies of episodic memory, however, have provided mixed evidence for theta’s role in successful learning and remembering. Re-evaluating these conflicting findings leads us to conclude that (1) successful memory is associated both with increased narrow-band theta oscillations and a broad-band tilt of the power spectrum; that (2) theta oscillations specifically support associative memory, whereas the spectral tilt reflects a general index of activation; and that (3) different cognitive contrasts (generalized vs. specific to memory), recording techniques (invasive vs. non-invasive) and referencing schemes (local vs. global) alter the balance between the two phenomena to make one or the other more easily detectable.
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