ADHD Dualcontrol Dataset

Task description:
The CSST was modified from the standard stop-signal task in order to dissociate proactive control from reactive control processes (Figure 1a) 43,46. Each trial began with a white or green cross (Cue) in the center of the screen for 200 milliseconds, followed by a green arrow (go signal). Participants were demanded to make an accurate and speedy button press in response to the pointing direction of the green arrow. Occasionally, the green arrow turned to red (stop signal), and participants had to withhold their responses when the color changed. The color of the cue indicated the probability of the stop signal in the coming trial. A green cross indicates that no stop signal would occur after the coming go signal, which is defined as Certain Go trial. A white cross indicates that a stop signal may occur after the coming go signal (33% chance), which is defined as Uncertain Go trial. If a stop signal is presented, the trial is defined as Stop trial. The stop-signal delay (SSD) was initialized at 200ms and adjusted in a staircase fashion. If the participant successfully canceled a prepotent response, the SSD increased by 50ms in the next Stop trial. If the participant failed in stopping, the SSD decreased by 50ms in the next Stop trial. Participants completed two runs of the CSST in the scanner, and each run included 32 Certain Go trials, 32 Uncertain Go trials, and 16 Stop trials with jittered inter-trial intervals (ITIs) between 1 and 4 seconds.

Participant information:
The group label is recorded in the participants.tsv file. In the "ADHD" column, a value of 0 indicates typically developing (TD) children, while a value of 1 indicates children with ADHD.

Neuroimaging data:
Functional MRI (fMRI) and structural MRI (sMRI) data are stored in the “openneuro” folder.

任务说明：
CSST改编自标准停止信号任务（stop-signal task），旨在分离主动控制（proactive control）与反应控制（reactive control）的加工过程（图1a）[43,46]。每个试次先在屏幕中央呈现白色或绿色十字（提示线索Cue），时长200毫秒，随后呈现绿色箭头（启动信号go signal）。要求被试根据绿色箭头的指向进行准确且快速的按键反应。偶尔情况下，绿色箭头会变为红色（停止信号stop signal），此时被试需抑制已准备好的按键反应。
提示线索的颜色预示了当前试次后续出现停止信号的概率：绿色十字代表后续启动信号不会伴随停止信号，此类试次被定义为“确定启动试次（Certain Go trial）”；白色十字代表后续启动信号有33%的概率伴随停止信号，此类试次被定义为“不确定启动试次（Uncertain Go trial）”；若出现停止信号，则该试次被定义为“停止试次（Stop trial）”。
停止信号延迟时间（stop-signal delay, SSD）初始设置为200毫秒，并采用阶梯式调整范式：若被试成功抑制了优势反应，则下一个停止试次的SSD增加50毫秒；若被试未能成功抑制反应，则下一个停止试次的SSD减少50毫秒。被试在扫描仪内完成两轮CSST任务，每轮包含32个确定启动试次、32个不确定启动试次以及16个停止试次，试次间间隔（inter-trial interval, ITI）为1至4秒的随机抖动时长。

被试信息：
分组标签记录于participants.tsv文件中。在“ADHD”列中，取值为0代表典型发育（typically developing, TD）儿童，取值为1则代表注意缺陷多动障碍（attention-deficit/hyperactivity disorder, ADHD）儿童。

神经影像数据：
功能磁共振成像（functional MRI, fMRI）与结构磁共振成像（structural MRI, sMRI）数据存储于“openneuro”文件夹中。

搜集汇总

背景与挑战

背景概述

ADHD Dualcontrol Dataset是一个包含61名参与者（包括典型发展儿童和ADHD儿童）的神经影像数据集，主要研究主动控制和反应控制过程。数据集包含功能性和结构性MRI数据，总大小为39.82GB，采用CC0许可证。