Discover datasets

A multichannel EEG dataset of self-paced (freewill) reach-and-grasp movements recorded from 23 healthy right-handed participants across 49 sessions. On each of 6808 trials the participant freely chose one of four cups, two filled with water and two empty, and decided when to move. Recordings were made at 250 Hz with a 31-channel scalp EEG montage plus EOG and auxiliary channels, to support brain-machine interface research on natural motor execution.

Participants

23

Channels

31 (10-10)

HED

v8.4.0

Size

2.53 GB

Version

v1.0.0

Updated

Oct 8, 2026

Intraoperative recordings from a single Neuropixels 1.0 silicon probe (384 sites) inserted into human cortex during neurosurgery at Massachusetts General Hospital. Three participants were recorded without a task, in prefrontal cortex during DBS lead implantation and in anterior temporal lobe during lobectomy. This release contains only the local-field-potential band (0.5-500 Hz, 2.5 kHz), losslessly converted from the DANDI NWB files into iEEG-BIDS (BrainVision) format.

Participants

3

Size

26.5 GB

Version

v1.0.0

Updated

Oct 8, 2026

This dataset contains intracranial EEG (stereo-EEG) recordings acquired during 41 high-frequency electrical cortical stimulations that evoked negative motor responses. Data come from 23 patients undergoing presurgical evaluation for drug-resistant epilepsy. Each recording spans about 24 seconds around a stimulation and includes pre- and post-stimulation 5-second epochs, which were used for connectivity analysis. Stimulation contact pairs, current intensities and evoked effects are annotated in the events files.

Participants

21

Size

1.04 GB

Version

v1.0.0

Updated

Jun 29, 2026

This dataset contains non-invasive electrophysiological recordings from the human cervical spinal cord in 30 healthy young adults, collected to test whether temporal expectation influences initial sensory processing in the spinal cord. Participants received electric median nerve stimulation at the left wrist after an auditory cue, with the cue-stimulus interval either fixed at 1100 ms or varied randomly between 100 and 2100 ms. Participants silently counted rare double-stimulus trials (80 ms ISI) and reported the count at the end of each block.

Participants

30

Channels

24 (other)

Size

92.8 GB

Version

v1.0.0

Updated

Jun 27, 2026

This dataset contains scalp EEG recordings from 22 participants who played BrainForm, a gamified P300 event-related potential brain-computer interface built for scalable data collection with consumer hardware and a minimal setup. Participants completed repeated runs of a P300 spelling/selection task at two task complexities. The data support study of BCI skill acquisition across sessions and of how different visual stimulation textures affect perception and performance.

Participants

22

Channels

8 (10-10)

HED

v8.4.0

Size

237 MB

Version

v1.0.6

Updated

Aug 20, 2026

EEG recordings from 14 healthy participants performing a visual P300 oddball BCI task for controlling a Bluetooth speaker, one of several home appliances in the original study. The task used a 6-class flash-stimulus paradigm on an LCD display. Data were recorded from 31 channels at 500 Hz, with 50 training and 30 testing blocks per subject. The dataset supports research on ERP-based BCIs for home appliance control and inter-subject transfer learning.

Participants

14

Channels

31 (10-10)

Citations

9

HED

v8.4.0

Size

644 MB

Version

v1.0.4

Updated

Oct 8, 2026

EEG recordings from 10 healthy participants performing kinesthetic motor imagery of gait while walking on flat ground with a fully assisted lower-limb exoskeleton. Trials alternate motor imagery with relaxation and a regressive-count distractor task, cued by auditory stimuli. Data were recorded with 27 EEG and 4 EOG channels as part of the DECODED EUROBENCH sub-project and re-released in BIDS format via MOABB.

Participants

10

Channels

27 (10-10)

HED

v8.4.0

Size

3.78 GB

Version

v1.0.0

Updated

Oct 8, 2026

Intracranial EEG (iEEG) recordings used to evaluate a flexible, scalable, high-channel-count micro-stereo-electrode for recording neural activity in the brain. The dataset includes raw and preprocessed (epoched) recordings from multiple species, including human patients, non-human primates, pigs and rodents. Direct electrical stimulation was used to examine the effects of stimulation on brain activity. Data are organized in iEEG-BIDS format, with binary files and channel maps in the derivatives folder.

Participants

1

Citations

3

Size

1.36 GB

Version

v1.0.0

Updated

Jun 25, 2026

An open-access EEG dataset for inner speech recognition recorded from ten participants with a 136-channel acquisition system. It covers three paradigms (inner speech, pronounced speech, and visualized condition) with four command classes (Up, Down, Right, Left) across 5640 trials. It is intended to support brain-computer interface development and the study of the neural mechanisms of the inner voice.

Participants

10

Citations

78

Size

24.6 GB

Version

v1.0.0

Updated

Jun 22, 2026

EEG recordings from 13 healthy participants performing an auditory oddball (P300) paradigm with target (1000 Hz) and non-target (500 Hz) tones at stimulus onset asynchronies between 60 and 600 ms. The study evaluated closed-loop Bayesian optimization and random search to find each individual's best stimulation speed for maximizing classification performance of a regularized LDA. The data comprise 31-channel EEG sampled at 1000 Hz, with an optimization part and a validation part.

Participants

13

Channels

31 (10-10)

Citations

2

HED

v8.4.0

Size

3.68 GB

Version

v1.0.7

Updated

Oct 9, 2026