Formation of visual memories controlled by gamma power phase-locked to alpha oscillations

被引：29

作者：

Park, Hyojin ^{[1
,2
,3
,4
]}

Lee, Dong Soo ^{[1
,3
,4
,5
,6
]}

Kang, Eunjoo ^{[7
]}

Kang, Hyejin ^{[1
,8
]}

Hahm, Jarang ^{[1
,3
,4
]}

Kim, June Sic ^{[9
]}

Chung, Chun Kee ^{[4
,9
]}

Jiang, Haiteng ^{[10
]}

Gross, Joachim ^{[2
]}

Jensen, Ole ^{[10
]}

机构：

[1] Seoul Natl Univ, Coll Med, Dept Nucl Med, Seoul, South Korea

[2] Univ Glasgow, Inst Neurosci & Psychol, Glasgow, Lanark, Scotland

[3] Seoul Natl Univ, Med Res Ctr, Inst Radiat Med, Seoul, South Korea

[4] Seoul Natl Univ, Interdisciplinary Program Cognit Sci, Seoul, South Korea

[5] Seoul Natl Univ, Dept Mol Med & Biopharmaceut Sci, Grad Sch Convergence Sci & Technol, Seoul, South Korea

[6] Seoul Natl Univ, Coll Med, Coll Pharm, Seoul, South Korea

[7] Kangwon Natl Univ, Dept Psychol, Chunchon 200701, South Korea

[8] Seoul Natl Univ, Data Sci Knowledge Creat Res Ctr, Seoul, South Korea

[9] Seoul Natl Univ, Dept Neurosurg, Coll Med, Seoul, South Korea

[10] Radboud Univ Nijmegen, Donders Inst Brain Cognit & Behav, NL-6525 ED Nijmegen, Netherlands

来源：

SCIENTIFIC REPORTS | 2016年 / 6卷

基金：

新加坡国家研究基金会; 英国惠康基金;

关键词：

WORKING-MEMORY; NEURAL ACTIVITY; BAND ACTIVITY; FREQUENCY; THETA; MAGNETOENCEPHALOGRAPHY; SYNCHRONIZATION; FEEDFORWARD; MECHANISMS; FEEDBACK;

D O I：

10.1038/srep28092

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Neuronal oscillations provide a window for understanding the brain dynamics that organize the flow of information from sensory to memory areas. While it has been suggested that gamma power reflects feedforward processing and alpha oscillations feedback control, it remains unknown how these oscillations dynamically interact. Magnetoencephalography (MEG) data was acquired from healthy subjects who were cued to either remember or not remember presented pictures. Our analysis revealed that in anticipation of a picture to be remembered, alpha power decreased while the cross-frequency coupling between gamma power and alpha phase increased. A measure of directionality between alpha phase and gamma power predicted individual ability to encode memory: stronger control of alpha phase over gamma power was associated with better memory. These findings demonstrate that encoding of visual information is reflected by a state determined by the interaction between alpha and gamma activity.

引用

页数：10

共 55 条

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