Decreased theta power at encoding and cognitive mapping deficits in elderly individuals during a spatial memory task

被引：24
|
作者：
Lithfous, Segolene [1 ]
Tromp, Delphine [1 ]
Dufour, Andre [1 ,2 ]
Pebayle, Thierry [2 ]
Goutagny, Romain [1 ]
Despres, Olivier [1 ]
机构：
[1] UNISTRA, CNRS, UMR 7364, Fac Psychol,LNCA, F-67087 Strasbourg, France
[2] UNISTRA, CNRS, UMS 3489, Ctr Invest Neurocognit & Neurophysiol CI2N, F-67087 Strasbourg, France
来源：
NEUROBIOLOGY OF AGING | 2015年 / 36卷 / 10期
关键词：
Aging; Spatial memory; Theta; Alpha; EEG; FRONTAL-MIDLINE THETA; AGE-DIFFERENCES; WORKING-MEMORY; HUMAN NAVIGATION; EEG ALPHA; OSCILLATIONS; SYNCHRONIZATION; MAINTENANCE; ROUTE; PERFORMANCE;
D O I：
10.1016/j.neurobiolaging.2015.07.007
中图分类号：
R592 [老年病学]; C [社会科学总论];
学科分类号：
03 ; 0303 ; 100203 ;
摘要：
The purpose of this study was to investigate the role of theta activity in cognitive mapping, and to determine whether age-associated decreased theta power may account for navigational difficulties in elderly individuals. Cerebral activity was recorded using electroencephalograph in young and older individuals performing a spatial memory task that required the creation of cognitive maps. Power spectra were computed in the frontal and parietal regions and correlated with recognition performance. We found that accuracy of cognitive mapping was positively correlated with left frontal theta activity during encoding in young adults but not in older individuals. Compared with young adults, older participants were impaired in the creation of cognitive maps and showed reduced theta and alpha activity at encoding. These results suggest that encoding processes are impaired in older individual, which may explain age-related cognitive mapping deficits. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码：2821 / 2829
页数：9
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