Overview

The Healthy Brain Network EEG Datasets (HBN-EEG) is a curated collection of high-resolution EEG data from over 2,600 participants aged 5-21 years, contributed by the Child Mind Institute Healthy Brain Network (HBN) project.

Currently, HBN-EEG includes 9 dataset releases in the Brain Imaging Data Structure (BIDS) format, containing EEG and behavioral data from different subjects performing the same tasks. Further dataset releases will be added as the study progresses.

These datasets also contain rich task-event annotations using Hierarchical Event Descriptors (HED) , making them ideal for large-scale analyses and machine-learning inference related to child and adolescent mental health, including advanced meta and mega analyses. Future enhancements will include more data layers such as eye-tracking and personalized EEG features.

Data Description

Contents

  • EEG Data: EEG recordings from a set of participants performing multiple tasks (some passive, some task-based with behavioral input).
  • Behavioral Responses: Reaction times and accuracy are integrated with EEG events for streamlined analysis in _events.tsv files.

Tasks

The HBN-EEG dataset includes EEG recordings from participants performing six distinct tasks, which are categorized into passive and active tasks based on the presence of user input and interaction in the experiment.

Passive Tasks

  1. Resting State: Participants rested with their heads on a chin rest, following instructions to open or close their eyes and fixate on a central cross.

  2. Surround Suppression: Participants viewed flashing peripheral disks with contrasting backgrounds, while event markers and conditions were recorded.

  3. Movie Watching: Participants watched four short movies with different themes, with event markers recording the start and stop times of presentations.

Active Tasks

  1. Contrast Change Detection: Participants identified flickering disks with dominant contrast changes and received feedback based on their responses.

  2. Sequence Learning: Participants memorized and repeated sequences of flashed circles on the screen, designed for different age groups.

  3. Symbol Search: Participants performed a computerized symbol search task, identifying target symbols from rows of search symbols.

Special Features

  • Hierarchical Event Descriptors (HED): Each dataset release is annotated using Hierarchical HED tags for comprehensive and consistent cross-study analyses.
  • Psychological Metrics: The datasets include psychometric bi-factors (p-factor, internalizing, externalizing tendencies) derived from questionnaires to provide insights into physiological and psychological data.

Platform Updates & Future Features

  • Personalized Electrode Locations: Future dataset releases will include more precise electrode location files tailored to each participant’s head anatomy.
  • Eye-Tracking Data: Upcoming additions will include synchronized eye-tracking data to provide a better understanding of attention and visual behaviors during EEG tasks.
  • Lead Field Matrix: Plans include releasing customized lead-field matrices for source imaging analyses.

Number of subjects across releases

Participants per Task and Release Overview Number of subjects with available EEG data runs across HBN-EEG Releases. “Available” flags are determined based on data length, sampling frequency, and availability of event markers (see the HBN-EEG preprint for more details).

Dataset Releases

Below are links to download specific dataset releases. Each release contains EEG data for multiple tasks. The data are structured uniformly to support comparative analyses.

Release 1 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R1
  • Total subjects: 136

Release 2 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R2
  • Total subjects: 152

Release 3 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R3
  • Total subjects: 183

Release 4 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R4
  • Total subjects: 324

Release 5 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R5
  • Total subjects: 330

Release 6 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R6
  • Total subjects: 134

Release 7 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R7
  • Total subjects: 381

Release 8 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R8
  • Total subjects: 257

Release 9 | Download from NEMAR.org

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_R9
  • Total subjects: 295

Not for Commercial Use Release | Download from NEMAR.org (NOT YET AVAILABLE, USE S3)

  • S3 URI: s3://fcp-indi/data/Projects/HBN/BIDS_EEG/cmi_bids_NC
  • Total subjects: 458

References

If you use this dataset platform, please cite the following publications:

Acknowledgments

We express our gratitude to the participants and their families for supporting the Healthy Brain Network project. Special thanks to the Child Mind Institute teams for their leadership and support during the data collection process.

HBN-EEG is also made possible by the efforts and computational resources provided by the NeuroScience Gateway team. Funding for preparing the BIDS datasets was partially provided by NIH/NIMH (R01MH125934).

© 2024 The Authors