nm000471 NEMAR-native dataset

Treder2021 hippocampal switchboard: epoched intracranial EEG during object/scene localiser and associative recall (extra-hippocampal channels)

Epoched intracranial EEG from 11 epilepsy patients (22 recordings, about 9 hours of epochs at 200 Hz) recorded during an object/scene localiser task and an associative recall task. The data comprise the extra-hippocampal channels released by the authors on OSF, repackaged into BIDS-compatible BrainVision files with trial-level event information. The dataset supports investigation of the hippocampus as a switchboard between perception and memory.

IEEG
Issues GitHub

Download this dataset

Pick a method. Large datasets skip the zip; resume support depends on each file's storage type. Full download guide →

  1. Download archive (.zip) — 4.4 GB

    A single zip of the published version. Best for small/medium datasets.

    Download zip

  2. NEMAR CLI recommended

    Pulls the pinned version + annexed data and resumes cleanly. Install nemar-cli → 

    nemar dataset download nm000471
  3. DataLad

    Clone the dataset repo and fetch file content on demand. Docs → 

    datalad clone https://github.com/nemarDatasets/nm000471 nm000471
cd nm000471 && datalad get .
  4. git-annex

    Plain git + git-annex against the dataset repo. Docs → 

    git clone https://github.com/nemarDatasets/nm000471 nm000471
cd nm000471 && git annex get .
  5. Direct files (wget / curl / rclone)

    Every file is listed by its stable manifest URL. Single-range requests and resume are currently supported for annex-backed entries; git-tracked files are served as full bodies. Real chunk-only byte delivery still awaits isolated, non-synthetic acceptance. Needs curl, jq, wget (or rclone/aria2c). Docs → 

    curl -s https://data.nemar.org/nm000471/v1.0.0/manifest.json | jq -r '.[].url' > urls.txt
wget -xc -i urls.txt

Compute on this dataset

Two routes today, with a third (in-browser one-click submission) landing soon.

  1. NeuroScience Gateway (NSG) portal.

    NSG runs EEGLAB / Brainstorm / MNE pipelines on supercomputing time donated by SDSC. Create an account, point a job at this dataset's S3 prefix (s3://nemar/nm000471), and submit.
    nsgportal.org →

  2. Local processing with nemar-cli.

    Pull the dataset to your machine and run any toolbox locally. Honors the published version pinning. 

    npm install -g nemar-cli
nemar dataset clone nm000471
cd nm000471 && nemar dataset get
  3. Just the files.

    rclone, aria2c, or any HTTPS client works against data.nemar.org/nm000471/ — the manifest carries stable data-plane file URLs. Single-range requests are supported for annex-backed entries; git-tracked files are served as full bodies. Real chunk-only byte delivery remains under isolated acceptance.

Direct compute access is coming soon. One-click NSG submission from this page is scoped for a follow-up phase. Tracked on nemarOrg/website#6.

Citations

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    Files

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    Signal viewer
    How to use the data (for agentic research) license, citation, download commands

    What it is

    Modalities
    IEEG
    Participants
    11
    Size
    4.29 GB
    Tasks
    localiser, recall

    License and terms

    License
    CC0-1.0
    Recommended citation
    Treder, M. S., Charest, I., Michelmann, S., Martín-Buro, M. C., Roux, F., Carceller-Benito, F., Ugalde-Canitrot, A., Rollings, D. T., Sawlani, V., Chelvarajah, R., Wimber, M., Hanslmayr, S., & Staresina, B. P. (2026). Treder2021 hippocampal switchboard: epoched intracranial EEG during object/scene localiser and associative recall (extra-hippocampal channels) (Version v1.0.0) [Data set]. NEMAR. https://doi.org/10.82901/nemar.nm000471
    Reference
    https://doi.org/10.1101/2020.05.20.104539

    Where the bytes are

    Latest version (always current)
    https://data.nemar.org/nm000471/latest/
    This version (v1.0.0)
    https://data.nemar.org/nm000471/v1.0.0/

    How to download

    The dataset
    nemar dataset download nm000471 Clones and fetches in one step. Content under stimuli/ and derivatives/ is skipped by default because those trees can be large; add --stimuli --derivatives for the whole thing.
    A subset, one step
    nemar dataset download nm000471 --subjects sub-01,02 Also filters by --sessions, --tasks, --runs, --datatypes, --include and --exclude.
    A subset, step 1
    nemar dataset clone nm000471 Clones git-annex pointers only; fetches no file content. Creates ./nm000471.
    A subset, step 2
    cd nm000471 The get command below reads the clone's annex, so it only works from inside the clone.
    A subset, step 3
    nemar dataset get <files> Pulls the files you actually need. Skips stimuli/ and derivatives/ unless the path you ask for is under one of them.
    One small file
    https://data.nemar.org/nm000471/v1.0.0/participants.tsv A direct HTTPS fetch works for any single file.

    Assess fit without downloading

    Participants table
    https://data.nemar.org/nm000471/v1.0.0/participants.tsv
    Dataset description
    https://data.nemar.org/nm000471/v1.0.0/dataset_description.json
    Directory listing
    https://data.nemar.org/nm000471/v1.0.0/?format=json
    Catalog record
    https://api.nemar.org/datasets/nm000471