Effects of Age on Teenager's Working Memory:Related An Event-related Potential Study
- VernacularTitle:青少年工作记忆的年龄差异:脑事件相关电位研究
- Author:
Lin ZHANG
;
Chuang LIU
- Publication Type:Journal Article
- Keywords:
Working memory;
ERP;
n-back paradigm;
Effect of age
- From:Chinese Journal of Clinical Psychology
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objecttive: The article analyzed how neurophysiological signals of adolescent's working memory(WM) change with increasing age.Methods: We recorded ERP from 52 healthy subjects aged from 14 to 22 years old in three groups.Our experiment consisted of 4 subexperiments and had two types of working memory tasks: spatial working memory and verbal working memory tasks,furthermore,every task included two levels of difficulty.Results: ①Reaction time was faster with increasing age,there was significant difference in accuracy of complicated tasks in different age groups with junior high school group significantly lower than others;②There was significant difference between junior high school group and college group in frontal P200 amplitude and its latency had no significant difference in the three groups;③Occipital P100 amplitude was descending when age was increasing and there had significant difference in latency between junior high school group and college group;④Occipital N160 amplitude was increasing with age and the latency was descending with age and there was significant difference between junior high school group and college group;⑤Average amplitude of parietal P300 was increasing with age and junior high school group's was significantly lower than the other two groups'.Conclusion: Teenager's working memory changes unevenly with age.
