EEGdash›NeMAR›NM000129

Iss. 129 · 70 subjects · 70 recordings · Non-commercial research use

Dataset Brief · Liu2020 – BETA SSVEP benchmark dataset

NM000129: eeg dataset, 70 subjects#

Name: Liu2020 – BETA SSVEP benchmark dataset
Published: 2019-01-01
License: Non-commercial research use

Liu2020 – BETA SSVEP benchmark dataset

Citation: Bingchuan Liu, Xiaoshan Huang, Yijun Wang, Xiaogang Chen, Xiaorong Gao (2019). Liu2020 – BETA SSVEP benchmark dataset. 10.82901/nemar.nm000129

70-participant EEG dataset — Liu2020 – BETA SSVEP benchmark dataset.

Data & curation Bingchuan Liu · Xiaoshan Huang · Yijun Wang · Xiaogang Chen · Xiaorong Gao
Year 2019 · Distributed via NeMAR
Funding National Key Research and Development Program of China (No. 2017YFB1002505) · Strategic Priority Research Program of Chinese Academy of Sciences (No. XDB32040200) · + 2 more

EEG · 64 ch250 HzBIDS 1.9.0Task · ssvepHealthyVisualPerception

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 NM000129

dataset = NM000129(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 = NM000129(cache_dir="./data", subject="01")

Advanced query

dataset = NM000129(
    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{nm000129,
  title = {Liu2020 – BETA SSVEP benchmark dataset},
  author = {Bingchuan Liu and Xiaoshan Huang and Yijun Wang and Xiaogang Chen and Xiaorong Gao},
  doi = {10.82901/nemar.nm000129},
  url = {https://doi.org/10.82901/nemar.nm000129},
}

§ 02Study · The README

About This Dataset#

BETA SSVEP benchmark dataset.

Schema: HED 8.4.0 | Browse: https://www.hedtags.org/hed-schema-browser

DOI

BETA SSVEP benchmark dataset

8.6

§ 03Cohort · Participants

Cohort#

Dataset Statistics#

Age distribution by gender (n=70, range 10–64 yr, mean 25.1 yr)

101520253035404560

Female · 28Male · 42

Sex composition

Female
28
Male
42
F : M ratio
0.67 : 1

40% female · n = 70 subjects with reported sex.

Channel counts: 64 ch (n=70 recordings)

Sampling frequencies: 250.0 Hz (n=70 recordings)

Total recording duration: 13 h 1 min

§ 04Signal · Electrodes & trace

Signal · Electrodes & live trace#

Fig. 01 Signal & montage 64 ch · EEG · 250 Hz · 70 subjects, 70 recordings

Live trace viewer — sub-13 · ses-0 · task-ssvep · run-0

Showing one representative recording out of 70 subjects and 70 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 · 62 sensors — 62 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.NM000129(cache_dir, query=None, s3_bucket=None, **kwargs)

Bases: EEGDashDataset

Author (year)Liu2020

Canonical—

Importable asNM000129 · Liu2020

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

class eegdash.dataset.NM000129(cache_dir: str, query: dict | None = None, s3_bucket: str | None = None, **kwargs)[source]#

Liu2020 – BETA SSVEP benchmark dataset

Study:: nm000129 (NeMAR)
Author (year):: Liu2020
Canonical:: —

Also importable as: NM000129, Liu2020.

Modality: eeg; Experiment type: Perception; Subject type: Healthy. Subjects: 70; recordings: 70; 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/nm000129 NeMAR dataset: https://nemar.org/dataexplorer/detail?dataset_id=nm000129 DOI: https://doi.org/10.82901/nemar.nm000129

Examples

>>> from eegdash.dataset import NM000129
>>> dataset = NM000129(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 — NM000129.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 nm000129 to reproduce the tutorial on this dataset.

Citation

Bingchuan Liu, Xiaoshan Huang, Yijun Wang, Xiaogang Chen, Xiaorong Gao (2019). Liu2020 – BETA SSVEP benchmark dataset. 10.82901/nemar.nm000129

Provenance

¹Contributed to nemar in BIDS format.

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

³Persistent identifier: 10.82901/nemar.nm000129.

Related & sibling datasets

NM000128EEG · 59 subj NM000126EEG · 34 subj NM000216EEG · 43 subj NM000125EEG · 23 subj NM000214EEG · 30 subj

+ 1 more — see See Also below →

BIDS

BIDS 1.9.0

Sidecars

events · events.json · channels · eeg.json

Provenance

Non-commercial research use · 10.82901/nemar.nm000129

Machine-readable

schema.org/Dataset · Croissant

Mirrors

OpenNeuro · NEMAR · HF org

Dataset ID	`NM000129`
Title	Liu2020 – BETA SSVEP benchmark dataset
Author (year)	`Liu2020`
Canonical	—
Importable as	`NM000129`, `Liu2020`
Year	2019
Authors	Bingchuan Liu, Xiaoshan Huang, Yijun Wang, Xiaogang Chen, Xiaorong Gao
License	Non-commercial research use
Citation / DOI	10.82901/nemar.nm000129
Source links	OpenNeuro \| NeMAR \| Source URL

NM000129: eeg dataset, 70 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#