NEMAR supports finding, visualizing, analyzing, and downloading human EEG, MEG, iEEG, and EMG datasets.

nemar.org
NEMAR homepage screenshot

About NEMAR

NEMAR is an open-access data, tools, and compute resource for finding, accessing, assessing, and processing human EEG, MEG, iEEG, and EMG data. Datasets are contributed by researchers and mirrored from OpenNeuro, and are BIDS-formatted with data-quality and HED event annotations.

Users can search, visualize, analyze, and download datasets, and researchers can contribute datasets. The site reports approximately 716 datasets, 36K participants, and 51.5 TB of hosted data. It notes the repository is under review for potential modification.

Key features

  • Search human EEG, MEG, iEEG, and EMG datasets
  • Visualize datasets for assessment
  • Analyze and process data with provided tools and compute
  • Download BIDS-formatted data with quality and HED annotations
  • Access datasets mirrored from OpenNeuro
  • Contribute researcher datasets to the archive
Best for: Researchers and students who work with human EEG, MEG, iEEG, or EMG data.
Good for
  • Open-access resource combining data, tools, and compute
  • Datasets are BIDS-formatted with data-quality and HED event annotations
  • Reports approximately 716 datasets and 51.5 TB of hosted data
Watch out for
  • Repository notes it is under review for potential modification

NEMAR at a glance

Official website
nemar.org
Type
Dataset
Platforms
Web
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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NEMAR FAQ

What kinds of data can I find on NEMAR?
Human EEG, MEG, iEEG, and EMG data.
Where do NEMAR datasets come from?
Datasets are contributed by researchers and mirrored from OpenNeuro.
Does NEMAR collect usage data?
NEMAR states it collects anonymous usage data to improve the service and does not sell data. Users can select Strict only to turn analytics off.
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