Theta and alpha oscillations during working-memory maintenance predict successful long-term memory encoding.
Theta and alpha oscillations during working-memory maintenance predict successful long-term memory encoding.
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DOI：
10.1016/j.neulet.2009.11.028
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发表时间：
2010-01-14
影响因子：
2.5
通讯作者：
Rösler F
中科院分区：
文献类型：
--
作者：
Khader PH;Jost K;Ranganath C;Rösler F
到目前为止，人们对工作记忆(WM)维持和长时记忆(LTM)编码的神经机制了解很多。然而，这些主题通常是单独研究的，对于这些过程可能如何相互作用知之甚少。在这里，我们调查了在延迟匹配到样本任务的延迟期间出现的脑电振荡是否反映了成功的LTM编码。鉴于先前发现的α和西塔能力随着工作记忆负荷的增加而增加，再加上假设成功的记忆编码涉及的过程与增加工作记忆负荷所调用的过程相似，因此对于随后记忆的刺激，α和西塔能力应该更高。与这一假设一致，我们发现，在枕顶头皮部位，随后记忆的刺激具有更强的阿尔法力。此外，对于随后记忆的刺激，在顶端到中央的电极上发现了更强的theta能力。这些结果支持了阿尔法和西塔振荡调制成功的LTM编码的观点。
To date, much is known about the neural mechanisms underlying working-memory (WM) maintenance and long-term-memory (LTM) encoding. However, these topics have typically been examined in isolation, and little is known about how these processes might interact. Here, we investigated whether EEG oscillations arising specifically during the delay of a delayed matching-to-sample task reflect successful LTM encoding. Given previous findings of increased alpha and theta power with increasing WM load, together with the assumption that successful memory encoding involves processes that are similar to those that are invoked by increasing WM load, alpha and theta power should be higher for subsequently remembered stimuli. Consistent with this assumption, we found stronger alpha power for subsequently remembered stimuli over occipital-to-parietal scalp sites. Furthermore, stronger theta power was found for subsequently remembered stimuli over parietal-to-central electrodes. These results support the idea that alpha and theta oscillations modulate successful LTM encoding.
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DOI：
10.1016/s0926-6410(98)00056-1
发表时间：
1999-03-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
Klimesch, W;Doppelmayr, M;Winkler, T
通讯作者：
Winkler, T
影响因子：
3.2
作者：
Davachi, L;Maril, A;Wagner, AD
通讯作者：
Wagner, AD
影响因子：
5.3
作者：
Jokisch, Daniel;Jensen, Ole
通讯作者：
Jensen, Ole
影响因子：
2.9
作者：
Khader, Patrick;Ranganath, Charan;Roesler, Frank
通讯作者：
Roesler, Frank
影响因子：
3
作者：
Klimesch, W;Schimke, H;Pfurtscheller, G
通讯作者：
Pfurtscheller, G