EEG data for ADHD / Control children

Participants were 61 children with ADHD and 60 healthy controls (boys and girls, ages 7-12). The ADHD children were diagnosed by an experienced psychiatrist to DSM-IV criteria, and have taken Ritalin for up to 6 months. None of the children in the control group had a history of psychiatric disorders, epilepsy, or any report of high-risk behaviors. EEG recording was performed based on 10-20 standard by 19 channels (Fz, Cz, Pz, C3, T3, C4, T4, Fp1, Fp2, F3, F4, F7, F8, P3, P4, T5, T6, O1, O2) at 128 Hz sampling frequency. The A1 and A2 electrodes were the references located on earlobes. The eye movement was recorded by two electrodes that were placed below and above the right eye. Since one of the deficits in ADHD children is visual attention, the EEG recording protocol was based on visual attention tasks. In the task, a set of pictures of cartoon characters was shown to the children and they were asked to count the characters. The number of characters in each image was randomly selected between 5 and 16, and the size of the pictures was large enough to be easily visible and countable by children. To have a continuous stimulus during the signal recording, each image was displayed immediately and uninterrupted after the child’s response. Thus, the duration of EEG recording throughout this cognitive visual task was dependent on the child’s performance (i.e. response speed).

本研究的被试包括61名注意缺陷多动障碍（ADHD）儿童与60名健康对照儿童，年龄介于7至12岁，涵盖男女性别。ADHD儿童均由经验丰富的精神科医师依据《精神障碍诊断与统计手册第四版（DSM-IV）》标准确诊，且此前服用哌甲酯（Ritalin）的时长不超过6个月。对照组儿童均无精神障碍、癫痫病史，亦无高危行为报告。脑电图（Electroencephalogram, EEG）记录采用10-20国际标准导联系统的19通道电极（Fz、Cz、Pz、C3、T3、C4、T4、Fp1、Fp2、F3、F4、F7、F8、P3、P4、T5、T6、O1、O2），采样频率为128Hz，以A1、A2电极作为参考电极，放置于双耳耳垂。眼动活动通过两枚分别置于右眼上下方的电极进行记录。鉴于ADHD儿童存在视觉注意缺陷，本次脑电图记录基于视觉注意任务范式开展：向儿童呈现一组卡通人物图片，要求其计数图片中的人物数量。每张图片的人物数量在5至16之间随机选取，图片尺寸足够大，便于儿童清晰观察并完成计数。为确保信号记录期间刺激连续呈现，每张图片将在儿童做出反应后立即不间断地切换至下一张。因此，本次视觉认知任务期间的脑电图记录时长取决于儿童的作答表现（即反应速度）。

搜集汇总

背景与挑战

背景概述

该数据集包含121名7-12岁儿童（61名ADHD患者和60名健康对照）的脑电图数据，专门用于研究注意力缺陷多动障碍。数据通过19通道EEG以128Hz采样频率采集，基于视觉注意力任务设计，其中儿童需计数卡通角色图片以激发认知活动。数据集以.mat格式提供，适用于信号处理、机器学习和神经科学领域的分析，重点关注ADHD与正常儿童在脑电连接性和非线性特征上的差异。