调查注意力缺陷/多动障碍的学龄儿童的工作记忆缺陷:在延迟匹配样本任务期间进行事件相关潜力研究
I-Hsuan Shen1,2, Wei-En Wang1,3, Hsing-Chang Ni2,4
1Chang Gung University, Taoyuan, Taiwan.
Journal of attention disorders
|September 18, 2024
概括
患有ADHD的儿童表现出工作记忆 (WM) 缺陷,包括处理速度较慢和神经资源减少,特别是在高认知负载下. 这些发现突显了ADHD中中央执行系统的损伤.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 儿童精神病学 儿童精神病学
背景情况:
- 注意缺陷/多动障碍 (ADHD) 与认知缺陷有关.
- 工作记忆 (WM) 对执行功能至关重要,在ADHD中经常受到损害.
研究的目的:
- 研究ADHD儿童工作记忆 (WM) 缺陷背后的神经机制.
- 为了比较ADHD和对照儿童之间的WM表现和神经活动.
主要方法:
- 34名ADHD儿童和34名匹配对照儿童完成了神经心理测试.
- 使用了修改后延迟匹配到样本 (DMTS) 任务的空间和语言版本.
- 使用事件相关潜力 (ERP) 技术来测量神经活动.
主要成果:
- 患有ADHD的儿童在WM任务上表现较差的行为表现.
- 在空间任务中观察到编码过程中的延迟P3延迟和检索过程中的延迟P2/N2延迟.
- 在高负载下进行口头编码时,较小的P3振幅表明ADHD中神经资源分配减少.
结论:
- 患有ADHD的儿童在WM的中央执行系统中表现出显著的缺陷.
- 在编码过程中处理速度较慢,在高负载下神经资源分配减少是ADHD的特征.
- 这些发现提供了关于ADHD中WM障碍的神经基础的见解.
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