Dear 

I hope this message finds you well. I am currently conducting a research project focused on ADHD, and I would like to kindly request access to the preprocessed ADHD-200 dataset.

Specifically, I am interested in obtaining the preprocessed resting-state fMRI ROI time series data based on the AAL atlas. These ROI-level time series would be highly valuable for the methodological components of my study, particularly for functional connectivity analysis and graph-theoretical modeling.

I would be grateful if you could let me know whether these AAL-based fMRI time series are available, and if so, whether there are any requirements, forms, or data usage agreements that need to be completed in order to obtain access.

Thank you very much for your time and consideration. I look forward to your response.

Kind regards,
Zhao Zheng

zhaozheng0226@126.com