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nm000258
Imagined Speech EEG database — Spanish vowels and commands (Pressel et al. 2016)

EEG Zarr

An open-access EEG database of imagined speech recorded from 15 healthy Spanish-speaking adults. Participants imagined 11 classes, comprising 5 Spanish vowels and 6 directional commands, while 6-channel EEG was recorded at 1024 Hz. Trials lasted 4 s with a 3 s imagery window, and the data were bandpass filtered (2-45 Hz). The dataset supports brain-computer interface and imagined speech classification research and is redistributed in BIDS format via the MOABB collection.

Participants

15

Channels

6 (10-20)

Citations

94

HED

v8.4.0

Size

2.00 GB

Version

v1.0.4

Updated

Aug 18, 2026

by German A. Pressel Coretto et al.
on005795
MULTI-CLARID (Multimodal Category Learning and Resting-state Imaging Data)

ANAT EEG FUNC

…Collaboration is highly welcome! Details of the learning task The auditory category…

Participants

34

Channels

72 (10-10)

Size

6.43 GB

Version

v1.0.0

Updated

Jun 27, 2026

by Jörg Stadler et al. OpenNeuro ds005795
nm000136
Guttmann-Flury et al. 2025 (P300) — Dataset combining EEG, eye-tracking, and high-speed video for ocular activity analysis across BCI paradigms

EEG Zarr

This dataset contains 64-channel EEG recorded at 1000 Hz from 31 healthy participants performing a row/column P300 speller task with 4L and 5L grid sizes. Each participant completed three sessions. It is the P300 component of a multimodal eye-BCI collection that also includes eye-tracking and high-speed video for analyzing ocular activity across BCI paradigms. Events are annotated with HED tags as Target and NonTarget flashes.

Participants

31

Channels

62 (10-10)

Citations

13

HED

v8.4.0

Size

40.7 GB

Version

v1.0.4

Updated

Oct 8, 2026

by Eva Guttmann-Flury et al.
nm000375
Neural interactions in the human frontal cortex dissociate reward and punishment learning (Combrisson et al., 2024): preprocessed SEEG high-gamma power, 16 patients (derivative)

iEEG

…Trial-wise prediction errors from a Q-learning model with learning rate…

Participants

16

Size

464 MB

Version

v1.0.0

Updated

Oct 8, 2026

by Etienne Combrisson et al.
on005494
Cued Recall of Paired Associates with Open-Loop Stimulation at Encoding or Retrieval

BEH iEEG Zarr

This dataset provides intracranial EEG recordings and behavioral events from a cued recall paired-associates memory task with open-loop electrical stimulation. Participants studied word pairs, completed an arithmetic distractor, and then performed cued recall. Stimulation was delivered to single hippocampal or entorhinal electrodes during either encoding or retrieval. Data were collected at clinical sites in collaboration with the Computational Memory Lab at the University of Pennsylvania.

Participants

20

Size

26.3 GB

Version

v1.0.0

Updated

Jun 27, 2026

by Haydn G. Herrema et al. OpenNeuro ds005494
on006260
Dataset of psychophysiological data from children with learning difficulties who strengthen reading and math skills through assistive technology

EEG Zarr

…data from Mexican children with learning difficulties who strengthen reading and math…

Participants

76

Channels

32 (10-10)

Size

2.76 GB

Version

v1.0.0

Updated

Jun 28, 2026

by César E. Corona-González et al. OpenNeuro ds006260
on005383
TMNRED, A Chinese Language EEG Dataset for Fuzzy Semantic Target Identification in Natural Reading Environments

EEG Zarr

TMNRED is an EEG dataset recorded from 30 native Chinese speakers during natural reading of news headlines and short sentences. Participants identified fuzzy semantic targets among target and non-target items. The dataset supports research on semantic processing of Chinese in naturalistic reading and includes raw and preprocessed data in BIDS format.

Participants

30

Channels

30 (10-10)

Citations

4

Size

17.4 GB

Version

v1.0.0

Updated

Jun 26, 2026

by Yanru Bai et al. OpenNeuro ds005383
on005261
Gloups_MEG

MEG Zarr

…The same participants performed an identical learning task during fMRI scanning. Related…

Participants

17

Size

225 GB

Version

v1.0.0

Updated

May 18, 2026

by Snezana Todorovic et al. OpenNeuro ds005261
nm000352
IEEG004: A library of human electrocorticographic data and analyses (Kai J. Miller) - calibrated task subset

iEEG

A calibrated task subset of Kai J. Miller's library of human electrocorticographic (ECoG) data, comprising 111 recordings from 24 epilepsy patients with subdural electrode grids. Tasks include finger flexion, hand gestures, motor movement and imagery, and verb generation and noun reading. Data were recorded at 1 kHz and converted to BIDS in BrainVision format with source-documented amplitude calibration.

Participants

24

Size

14.0 GB

Version

v1.0.0

Updated

Oct 8, 2026

by Kai J. Miller
nm000174
Imagined Speech EEG dataset comparing paradigm designs (Aguilera-Rodriguez et al. 2025)

EEG Zarr

An EEG dataset of imagined speech from 15 healthy participants comparing traditional cue-based and gamified (Pac-Man maze) paradigms for brain-computer interface applications. It comprises 1,800 trials of four Spanish directional commands (avanzar, retroceder, derecha, izquierda) recorded at 500 Hz from 24 electrodes. This BIDS derivative, distributed via MOABB and NEMAR, supports evaluation of how paradigm design affects imagined speech decoding.

Participants

15

Channels

24 (10-10)

HED

v8.4.0

Size

1.52 GB

Version

v1.0.3

Updated

Aug 18, 2026

by Edgar Aguilera-Rodriguez et al.