Ask the NEMAR Assistant about any dataset
An experimental assistant on every page answers questions about NEMAR data, and can read a recording and plot it for you, showing the code it ran.
Read more about Ask the NEMAR Assistant about any datasetOpen neuroscience data, ready to use
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NEMAR is an open-access data, tools, and compute resource for finding, accessing, assessing, and processing human EEG, MEG, iEEG, and EMG data — contributed by researchers, mirrored from OpenNeuro, and BIDS-formatted with data-quality and HED event annotations.
858
Datasets hosted
42K
Participants
64.5 TB
Hosted data
What's new on NEMAR
New features, data, and events.
- Deposit a dataset anonymously for double-blind review
- Annotate recordings with HED and SCORE, right in the viewer
Most cited datasets
Citations to each dataset or its paper, all time.
- UC San Diego Resting State EEG Data from Patients with Parkinson's Disease244 citations
- MDD Patients and Healthy Controls EEG Data173 citations
- Perturbed beam-walking task165 citations
- ERP CORE162 citations
- OpenBMI SSVEP EEG dataset (Lee et al. 2019)101 citations
- Lee et al. 2019 (ERP) — EEG dataset and OpenBMI toolbox for three BCI paradigms: an investigation into BCI illiteracy100 citations
- Imagined speech EEG dataset — short and long words (Nguyen et al. 2017)99 citations
- Imagined speech EEG dataset — short words condition (Nguyen et al. 2017)99 citations
- Lee et al. 2019 (Motor Imagery) — EEG dataset and OpenBMI toolbox for three BCI paradigms: an investigation into BCI illiteracy99 citations
- Auditory-Visual Shift Study99 citations
Latest datasets
Newly published on NEMAR.
- Developmental ECoG: resting-state electrocorticography from 13 epilepsy patients aged 3-33 years (Miles, Weaver, Webb, Ojemann 2025)
- Wakeful and sleep-like states in subdural ECoG (Pahwa et al., 2015): 4 patients, 64-channel grids
- Face-selective ventral occipito-temporal responses to fast periodic visual stimulation, SEEG (Jonas et al., 2016) (derivative)
- Subthalamic local field potentials during the balloon analogue risk task (Pearson et al., 2017): Parkinson's disease DBS surgery (derivative: decimated LFP)
- Thalamic local field potentials during reading aloud of words and nonwords (Wang et al., 2022): 11 essential tremor patients, DBS surgery (derivative: preprocessed epochs)
- Executed and imagined grasp forces recorded with stereo-EEG (Murphy et al., 2016): 4 participants, power and pinch force-matching
- Brain criticality predicts individual levels of inter-areal synchronization (Fusca, Siebenhuehner, Wang et al., 2023): SEEG/MEG PLV and DFA (derivative)
- Human ECoG speaking consonant-vowel syllables
- Vanderbilt BIEN Lab SOZ Resting State SEEG Classification (processed resting-state SEEG)
- Motor imagination and execution with a chronic wireless epidural ECoG BCI (WIMAGINE), one participant with tetraplegia (Pollina et al. 2026)