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Alternative TitleDevelopmental differences of conflict adaptation: evidencefrom event-related potential studies
Thesis Advisor施建农 ; 刘彤冉
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Discipline心理学
Keyword认知控制 冲突适应 儿童发展 事件相关电位
综合以上的结果,尽管个体在S-S,S-R 和混合S-R冲突适应发展上的特点不同,但是整体上冲突适应的发展存在年龄相关的行为和神经活动的差异,成人的冲突适应能力高于儿童,年龄较大群体儿童的冲突适应能力高于较小群体;S-S和S-R冲突适应发展的差异不同,行为上,无论是儿童还是成人在S-S冲突适应能力高于S-R冲突适应,并且在神经活动上只有儿童表现出冲突适应任务类型发展的差异,即儿童表现出在S-R冲突监测的适应上高于S-S冲突监测的适应,并且只有5岁儿童表现出S-R冲突解决的适应早于S-S冲突解决的适应。
Other AbstractConflict adaptation(CA), one component of cognitive control, is often used to investigate the cognitive and brainmechanism of cognitive control. It refers to reduced conflict effect following incompatible trials than compatible trialsand it has threemain types: Stimulus-Stimulus CAand Stimulus-Response CA and mixed Stimulus-response CA. Conflict monitoring theory supposes that anterior cingulated cortex (ACC) and prefrontal cortex (PFC) respectively monitor conflict and resolve conflict. According to the anatomical and physiological maturation of ACC and PFC into early adulthood, and increased activation, theconflict adaptation effect size should be different in the 5 years oldchildren, 10 years old childrenand adults. The current investigation is focused on the possible age-relateddifferences of conflict adaptation in both behavioral and electrophysiological indices during the Flanker,Simon and Stroop task.
Study 1 employed three separate experiments to explore the age-related differences of S-S CA, S-R CA and mixed S-R CA: experiment 1 with Flankertask displayed that behaviorally there were CA in 5 years old children, 10 years old children and adults, and audits has better CA ability than children, older children has better CA ability than younger children in reaction time (RT), and adults and older children has better CA ability in accuracy; correlation between RT and ERPs found that there was significant relationship only for adults; experiment 2 with Simon task demonstrated that individuals showed similar CA in RT, and adults has better CA ability than both younger and older children in accuracy; for the ERPs, children showed CA, reflected by much negative N2 amplitude on cI trials than that iI trials, while adults only showed TSE on the right hemisphere, reflected by much negative N2 amplitude on cC trials than that iC trials, and correlation after correction between RT and ERPs found that there was significant relationship only for adults in the N2 amplitude; experiment 3 with Stroop task showed that children and adults has CA, and only adults has better CA ability than children, reflected by smaller CAE in RT for adults than that in 10 years old children; correlation between RT and ERPs found that there was significant relationship only for adults in the N450 amplitude.
Study 2 further investigated simultaneously the development of S-S and S-R CA, generally, individuals showed better CA ability in the Flankertask than that in the Simon task, reflected by smallerCAE value in RT and larger CAE value in accuracyin the Flanker task than that in the Simon task; for the ERPs, adults has CA in the Flanker task, reflected by much negative N2 amplitude on cI trials than that on iI trials, while in the Simon task, adults only showed switching effect, reflected by less negative N2 amplitude on cC trials than that on iC trials, and older children showed adaptation in both Flanker and Simon task, andswitching effectonly in the Simon task, and younger children only displayed CA in the Simon task, while had switching effectin both Flanker task and Simon task; both older children and younger children showed larger CAE value for N2 amplitude in the Flanker task than that in the Simon task.
Our current studyreveals the importantdevelopmental changes for S-S CA and S- R CA, though it is not as precisely as what we have predictedthat S-S CA develop earlier than S-R CA in ERP component, evidences from reaction timeand accurate rates showed that adults had better CA ability than that children, and older children had better CA ability than that younger children; N2 peak amplitude and P3 peak latency support the conclusion thatchildren showed better S-R CA ability than that S-S CA ability, and only conflict resolution adaptation in S-R came earlier than that S-S, which conforms toour expectation andcan be further used to probe the neural mechanism of cognitive control.
Subject Area神经生物学
Document Type学位论文
Recommended Citation
GB/T 7714
刘修英. 冲突适应的发展:来自ERP的证据[D]. 北京. 中国科学院研究生院,2016.
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