EEGdash›OpenNeuro›DS008104

Iss. 8104 · 81 subjects · 81 recordings · CC0

Dataset Brief · FNR Effort Study EEG Dataset

DS008104: eeg dataset, 81 subjects#

FNR Effort Study EEG Dataset

Access recordings and metadata through EEGDash.

Citation: Nellia Bellaert, Federico Cassioli, Wan-Ling Tseng, Mandy Rossignol (2026). FNR Effort Study EEG Dataset. 10.18112/openneuro.ds008104.v1.0.0

Modality: eeg Subjects: 81 Recordings: 81 License: CC0 Source: openneuro

Metadata: Complete (100%)

81-participant EEG dataset — FNR Effort Study EEG Dataset.

Data & curation Nellia Bellaert, Federico Cassioli, Wan-Ling Tseng, Mandy Rossignol
Senior author Nellia Bellaert, Federico Cassioli, Wan-Ling Tseng, Mandy Rossignol
Year 2026 · Distributed via OpenNeuro

EEG · 64 (74), 72 (7) ch4096 HzBIDS 1.8.0Task · FNReffortstudy

Layer 01Study

What was asked

Hypothesis, independent & dependent variables, paradigm, cohort, and the editorial caveats around what the recordings can and cannot answer.

Layer 02Signal · BIDS

What was recorded

Sidecars, channels & electrodes, coordinate system, event semantics, and quality stats from the NEMAR pipeline when available.

Layer 03Training · ML

What you can train on

Recommended access modes — MNE Raw, braindecode windows, PyTorch DataLoader — plus the targets the metadata makes addressable.

§ 01Access · Get started

Quickstart#

Get Started

Install

pip install eegdash

Access the data

from eegdash.dataset import DS008104

dataset = DS008104(cache_dir="./data")
# Get the raw object of the first recording
raw = dataset.datasets[0].raw
print(raw.info)

Query & Filter

Filter by subject

dataset = DS008104(cache_dir="./data", subject="01")

Advanced query

dataset = DS008104(
    cache_dir="./data",
    query={"subject": {"$in": ["01", "02"]}},
)

Iterate recordings

for rec in dataset:
    print(rec.subject, rec.raw.info['sfreq'])

Cite This Dataset

If you use this dataset in your research, please cite the original authors.

BibTeX

@dataset{ds008104,
  title = {FNR Effort Study EEG Dataset},
  author = {Nellia Bellaert, Federico Cassioli, Wan-Ling Tseng, Mandy Rossignol},
  doi = {10.18112/openneuro.ds008104.v1.0.0},
  url = {https://doi.org/10.18112/openneuro.ds008104.v1.0.0},
}

§ 02Study · The README

About This Dataset#

Effort Study EEG dataset.

Raw EEG data recorded during the Frustrative Effort Doors task. N=81. Data were collected in 2025 at the University of Mons, Belgium. Analyzed in 2025. - Nellia Bellaert 07/02/2026

§ 03Cohort · Participants

Cohort#

Dataset Statistics#

Channel counts (ch)

6472

Sampling frequencies: 4096.0 Hz (n=81 recordings)

Total recording duration: 54 h

§ 04Signal · Electrodes & trace

Signal · Electrodes & live trace#

Fig. 01 Signal & montage 64 (74), 72 (7) ch · EEG · 4096 Hz · 81 subjects, 81 recordings

Live trace viewer — sub-166 · task-FNReffortstudy

Showing one representative recording out of 81 subjects and 81 recordings in this dataset. Browse the full set on OpenNeuro; drop any other _eeg.{set,edf,bdf,vhdr} file onto the viewer (or pass ?eeg=<url>) to inspect it.

Electrode layout — EEG · 64 sensors — 64 channels

NEMAR Processing Statistics#

The plots below are generated by NEMAR’s automated EEG pipeline. The histogram shows pipeline success for data cleaning and ICA decomposition, the percentage of data frames and EEG channels retained after artefact removal, line noise per channel (RMS, dB), and the age/gender distribution of participants.

HED event descriptors word cloud

§ 05Manifest · BIDS tree

Manifest#

File Explorer#

Browse the BIDS file structure of this dataset. Records are fetched on demand from the EEGDash catalog the first time you open the explorer.

Recordings—

Files—

Subjects—

Modalities—

Click to load file structure…

§ 06API · Programmatic access

API Reference#

Signature

eegdash.dataset

class

eegdash.dataset.DS008104(cache_dir, query=None, s3_bucket=None, **kwargs)

Bases: EEGDashDataset

Author (year)—

Canonical—

Importable asDS008104

Sourceeegdash/dataset/registry.py · [source ↗]

class eegdash.dataset.DS008104(cache_dir: str, query: dict | None = None, s3_bucket: str | None = None, **kwargs)[source]#

FNR Effort Study EEG Dataset

Study:: ds008104 (OpenNeuro)
Author (year):: —
Canonical:: —

Also importable as: DS008104.

Modality: eeg; Subject type: Unknown. Subjects: 81; recordings: 81; tasks: 1.

Parameters:

cache_dir (str | Path) – Directory where data are cached locally.
query (dict | None) – Additional MongoDB-style filters to AND with the dataset selection. Must not contain the key dataset.
s3_bucket (str | None) – Base S3 bucket used to locate the data.
**kwargs (dict) – Additional keyword arguments forwarded to EEGDashDataset.

data_dir#

Local dataset cache directory (cache_dir / dataset_id).

Type:: Path

query#

Merged query with the dataset filter applied.

Type:: dict

records#

Metadata records used to build the dataset, if pre-fetched.

Type:: list[dict] | None

Notes

Each item is a recording; recording-level metadata are available via dataset.description. query supports MongoDB-style filters on fields in ALLOWED_QUERY_FIELDS and is combined with the dataset filter. Dataset-specific caveats are not provided in the summary metadata.

References

OpenNeuro dataset: https://openneuro.org/datasets/ds008104 NeMAR dataset: https://nemar.org/dataexplorer/detail?dataset_id=ds008104 DOI: https://doi.org/10.18112/openneuro.ds008104.v1.0.0

Examples

>>> from eegdash.dataset import DS008104
>>> dataset = DS008104(cache_dir="./data")
>>> recording = dataset[0]
>>> raw = recording.load()

__init__(cache_dir: str, query: dict | None = None, s3_bucket: str | None = None, **kwargs)[source]#

save(path: str, overwrite: bool = False, offset: int = 0)[source]#

Save datasets to files by creating one subdirectory for each dataset:

path/
    0/
        0-raw.fif | 0-epo.fif
        description.json
        raw_preproc_kwargs.json (if raws were preprocessed)
        window_kwargs.json (if this is a windowed dataset)
        window_preproc_kwargs.json  (if windows were preprocessed)
        target_name.json (if target_name is not None and dataset is raw)
    1/
        1-raw.fif | 1-epo.fif
        description.json
        raw_preproc_kwargs.json (if raws were preprocessed)
        window_kwargs.json (if this is a windowed dataset)
        window_preproc_kwargs.json  (if windows were preprocessed)
        target_name.json (if target_name is not None and dataset is raw)

Parameters:

path (str) –

Directory in which subdirectories are created to store
-raw.fif | -epo.fif and .json files to.
overwrite (bool) – Whether to delete old subdirectories that will be saved to in this call.
offset (int) – If provided, the integer is added to the id of the dataset in the concat. This is useful in the setting of very large datasets, where one dataset has to be processed and saved at a time to account for its original position.

Access modesMNE → braindecode → PyTorch → ML

.rawMNE Raw object — standard tools (filter, epoch, ICA, plot_psd).mne

BaseConcatDatasetEach record is a lazy BaseDataset from braindecode — windowed via create_windows_from_events.braindecode

DataLoaderWraps the windowed dataset into a PyTorch DataLoader; supports parallel workers and on-the-fly augmentations.pytorch

Zarr cacheOptional braindecode Zarr mirror for fast resume; persisted to cache_dir.zarr

Hugging FaceNo per-dataset mirror published yet — browse the EEGDash org listing for sibling datasets. See the datasets loader API.huggingface

Croissant 1.0Machine-readable JSON-LD descriptor — DS008104.croissant.json (MLCommons schema, ingestible by PyTorch / TensorFlow / JAX).mlcommons

Examples using EEGDashcurated · start here

Find datasets with the EEGDash APIQuery the catalogue, filter by task or modality, list candidates.

Load one EEG recordingResolve a single record to an MNE Raw with channels and events.

EEG recording to PyTorch DataLoaderWrap braindecode windows in a DataLoader for model training.

Preprocess EEG and create windowsFilter, resample, epoch — and persist the windowed dataset.

Save and reload prepared dataCache a windowed dataset to disk and reattach it without recompute.

Download a dataset locallyPrefetch BIDS files to a local cache and validate the layout.

Swap any load_dataset(...) call for ds008104 to reproduce the tutorial on this dataset.

Citation

Nellia Bellaert, Federico Cassioli, Wan-Ling Tseng, Mandy Rossignol (2026). FNR Effort Study EEG Dataset. 10.18112/openneuro.ds008104.v1.0.0

Provenance

¹Contributed to openneuro in BIDS format.

²Curated & ingested by the EEGDash catalog; see CITATION.cff for canonical reference.

³Persistent identifier: 10.18112/openneuro.ds008104.v1.0.0.

Related & sibling datasets

DS007827EEG · 99 subj DS007864EEG · 45 subj DS007822EEG · 33 subj DS007865EEG · 24 subj DS007813EEG · 4 subj

+ 1 more — see See Also below →

BIDS

BIDS 1.8.0

Sidecars

events · channels · eeg.json

Provenance

CC0 · 10.18112/openneuro.ds008104.v1.0.0

Machine-readable

schema.org/Dataset · Croissant

Mirrors

OpenNeuro · NEMAR · HF org

Dataset ID	`DS008104`
Title	FNR Effort Study EEG Dataset
Author (year)	—
Canonical	—
Importable as	`DS008104`
Year	2026
Authors	Nellia Bellaert, Federico Cassioli, Wan-Ling Tseng, Mandy Rossignol
License	CC0
Citation / DOI	doi:10.18112/openneuro.ds008104.v1.0.0
Source links	OpenNeuro \| NeMAR \| Source URL

DS008104: eeg dataset, 81 subjects#

Quickstart#

About This Dataset#

Cohort#

Dataset Statistics#

Signal · Electrodes & live trace#

NEMAR Processing Statistics#

Manifest#

File Explorer#

API Reference#

Citation

Provenance

Related & sibling datasets

See Also#