EEGdashOpenNeuroDS003626
Iss. 3626 · 10 subjects · 30 recordings · CC0
Dataset Brief · Inner Speech

DS003626: eeg dataset, 10 subjects#

Inner Speech

Citation: Nicolas Nieto, Victoria Peterson, Hugo Rufiner, Juan Kamienkowski, Ruben Spies (20). Inner Speech. 10.18112/openneuro.ds003626.v2.0.0

10-participant EEG dataset — Inner Speech.

BIDS 1.4Task · innerspeech3 sessionsHealthyVisualMotor
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#

Install

pip install eegdash

Access the data

from eegdash.dataset import DS003626

dataset = DS003626(cache_dir="./data")
# Get the raw object of the first recording
raw = dataset.datasets[0].raw
print(raw.info)

Filter by subject

dataset = DS003626(cache_dir="./data", subject="01")

Advanced query

dataset = DS003626(
    cache_dir="./data",
    query={"subject": {"$in": ["01", "02"]}},
)

Iterate recordings

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

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

BibTeX

@dataset{ds003626,
  title = {Inner Speech},
  author = {Nicolas Nieto and Victoria Peterson and Hugo Rufiner and Juan Kamienkowski and Ruben Spies},
  doi = {10.18112/openneuro.ds003626.v2.0.0},
  url = {https://doi.org/10.18112/openneuro.ds003626.v2.0.0},
}
§ 02Study · The README

About This Dataset#

Inner Speech Dataset.

Author: Nicolas Nieto

Code available at N-Nieto/Inner_Speech_Dataset Prepreint available at https://www.biorxiv.org/content/10.1101/2021.04.19.440473v1 Abstract:

Surface electroencephalography is a standard and noninvasive way to measure electrical brain activity. Recent advances in artificial intelligence led to significant improvements in the automatic detection of brain patterns, allowing increasingly faster, more reliable and accessible Brain-Computer Interfaces.

Different paradigms have been used to enable the human-machine interaction and the last few years have broad a mark increase in the interest for interpreting and characterizing the “inner voice” phenomenon. This paradigm, called inner speech, raises the possibility of executing an order just by thinking about it, allowing a “natural” way of controlling external devices. Unfortunately, the lack of publicly available electroencephalography datasets, restricts the development of new techniques for inner speech recognition. A ten-subjects dataset acquired under this and two others related paradigms, obtain with an acquisition systems of 136 channels, is presented. The main purpose of this work is to provide the scientific community with an open-access multiclass electroencephalography database of inner speech commands that could be used for better understanding of the related brain mechanisms. Conditions = Inner Speech, Pronounced Speech, Visualized Condition Classes = “Arriba/Up”, “Abajo/Down”, “Derecha/Right”, “Izquierda/Left” Total Trials = 5640 Please contact us at this e-mail address if you have any doubts: nnieto@sinc.unl.edu.ar

§ 03Cohort · Participants

Cohort#

§ 04Signal · Electrodes & trace

Signal · Electrodes & live trace#

Fig. 01 Signal & montage — ch · EEG · Varies · 10 subjects, 30 recordings
Live trace viewer — sub-08 · ses-02 · task-innerspeech

Showing one representative recording out of 10 subjects and 30 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.

No scalp electrode layout is currently indexed for this dataset. Once the eegdash montage registry ingests it, the interactive viewer will appear here automatically.

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 HED event descriptors word cloud — DS003626
§ 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…
Full dataset metadata table

Dataset ID

DS003626

Title

Inner Speech

Author (year)

Nieto2021

Canonical

Importable as

DS003626, Nieto2021

Year

20

Authors

Nicolas Nieto, Victoria Peterson, Hugo Rufiner, Juan Kamienkowski, Ruben Spies

License

CC0

Citation / DOI

10.18112/openneuro.ds003626.v2.0.0

Source links

OpenNeuro | NeMAR | Source URL

Copy-paste BibTeX
@dataset{ds003626,
  title = {Inner Speech},
  author = {Nicolas Nieto and Victoria Peterson and Hugo Rufiner and Juan Kamienkowski and Ruben Spies},
  doi = {10.18112/openneuro.ds003626.v2.0.0},
  url = {https://doi.org/10.18112/openneuro.ds003626.v2.0.0},
}
§ 06API · Programmatic access

API Reference#

Signature
eegdash.dataset
class
eegdash.dataset.DS003626(cache_dir, query=None, s3_bucket=None, **kwargs)
Bases: EEGDashDataset
Author (year)Nieto2021
Canonical
Importable asDS003626 · Nieto2021
Sourceeegdash/dataset/registry.py · [source ↗]
class eegdash.dataset.DS003626(cache_dir: str, query: dict | None = None, s3_bucket: str | None = None, **kwargs)[source]#

Inner Speech

Study:

ds003626 (OpenNeuro)

Author (year):

Nieto2021

Canonical:

Also importable as: DS003626, Nieto2021.

Modality: eeg. Subjects: 10; recordings: 30; 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/ds003626 NeMAR dataset: https://nemar.org/dataexplorer/detail?dataset_id=ds003626 DOI: https://doi.org/10.18112/openneuro.ds003626.v2.0.0 NEMAR citation count: 6

Examples

>>> from eegdash.dataset import DS003626
>>> dataset = DS003626(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
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 FacePre-bundled mirror at EEGDash/ds003626 · pull with datasets.load_dataset("EEGDash/ds003626").huggingface
Croissant 1.0Machine-readable JSON-LD descriptorDS003626.croissant.json (MLCommons schema, ingestible by PyTorch / TensorFlow / JAX).mlcommons
Examples using EEGDashcurated · start here

Swap any load_dataset(...) call for ds003626 to reproduce the tutorial on this dataset.

Citation

Nicolas Nieto, Victoria Peterson, Hugo Rufiner, Juan Kamienkowski, Ruben Spies (20). Inner Speech. 10.18112/openneuro.ds003626.v2.0.0

Provenance

¹Contributed to openneuro in BIDS format.

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

³Persistent identifier: 10.18112/openneuro.ds003626.v2.0.0.

BIDS
BIDS 1.4
Sidecars
not yet probed
Machine-readable

See Also#