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HED example datasets

This repository contains a set of HED-annotated datasets in BIDS-compatible format. These datasets can be useful for:

  1. Writing lightweight software tests.
  2. Serving as examples of how to incorporate HED into BIDS-structured data.

The datasets have empty raw data files. However, some data headers containing the metadata are still intact.

Datasets that are derived from datasets on OpenNeuro are identified by their OpenNeuro accession number plus 's' plus a modifier. Datasets focused on particular a particular modality may have the modality prepended to the name. For example, eeg_ds003645s identifies a reduced dataset derived the EEG data in OpenNeuro dataset ds003645. The suffix modifier indicates what this dataset is designed to test.

Dataset Description
eeg_ds002893s_hed_attention_shift Auditory-visual attention shift data.
Illustrates remapping of multiple event columns.
eeg_ds003654s_hed Wakeman-Henson data using short form tags and definitions.
eeg_ds003654s_hed_column Wakeman-Henson data with tags in events.tsv HED column.
eeg_ds003654s_hed_inheritance Wakeman-Henson data with multiple sidecars.
eeg_ds003654s_hed_library Wakeman-Henson data using HED libraries.
eeg_ds003654s_hed_longform Wakeman-Henson data using long form tags and definitions.
eeg_ds004105s_hed BCIT Driving with auditory cueing data.
Part of a test data corpus for BIDS-MEGA testing.
eeg_ds004106s_hed BCIT Advanced guard duty data.
Part of a test data corpus for BIDS-MEGA testing.
eeg_ds004117s_hed_sternberg Sternberg working memory task.
Chosen as a replication study for EEGManyLabs.
fmri_soccer21_hed HED tags using a single column.
Used for fMRI processing examples.

Validating examples using the BIDS validator

For general information on the bids-validator, including installation, configuration, and usage, see the bids-validator README file.

Example: The following command validates the eeg_ds003645s_hed dataset:

bids-validator eeg_ds003645s_hed --config.ignore=99

This example assumes that npm and the bids-validator npm package have been installed on the local machine. The command is run from the directory above the dataset root directory. The --config.ignore=99 flag tells the bids-validator to ignore empty data files rather than to report the empty file error.

For FMRI datasets you also need to use the --ignoreNiftiHeaders option.

Example: The following command validates fmri_soccer21s_hed dataset:

bids-validator fmri_soccer21s_hed --config.ignore=99 --ignoreNiftiHeaders

For additional information on BIDS validation, see the bids-examples.