on005523
NEMAR copy of ds005523

Spatial Memory of Object Locations with Open-Loop Stimulation at Encoding

This dataset contains behavioral events and intracranial EEG recordings from epilepsy patients performing a spatial navigation memory task. Participants encoded object locations during guided navigation and later recalled them by self-navigating. Open-loop electrical stimulation was delivered to hippocampal and entorhinal electrodes during encoding on alternating, difficulty-matched trials, with no stimulation at retrieval.

BEH IEEG
Issues GitHub OpenNeuro ds005523

Download this dataset

Pick a method. Large datasets skip the zip and use the streaming methods below — all resumable. Full download guide →

  1. Download archive (.zip) — 55.7 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 on005523
  3. DataLad

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

    datalad clone https://github.com/nemarDatasets/on005523 on005523
cd on005523 && datalad get .
  4. git-annex

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

    git clone https://github.com/nemarDatasets/on005523 on005523
cd on005523 && git annex get .
  5. Direct files (wget / curl / rclone)

    Every file with a stable, range-resumable URL from the manifest. Needs curl, jq, wget (or rclone/aria2c). Docs → 

    curl -s https://data.nemar.org/on005523/v1.0.0/manifest.json | jq -r '.[].bytes_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/on005523), 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 on005523
cd on005523 && nemar dataset get
  3. Just the files.

    rclone, aria2c, or any HTTPS client works against data.nemar.org/on005523/ — the manifest carries presigned S3 URLs.

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
    BEH, IEEG
    Participants
    22
    Size
    69.7 GB
    Tasks
    YC2

    License and terms

    License
    CC0
    Recommended citation
    Herrema, H. G., & Kahana, M. J. (2026). Spatial Memory of Object Locations with Open-Loop Stimulation at Encoding (Version v1.0.0) [Data set]. NEMAR. https://doi.org/10.82901/nemar.on005523

    Where the bytes are

    Latest version (always current)
    https://data.nemar.org/on005523/latest/
    This version (v1.0.0)
    https://data.nemar.org/on005523/v1.0.0/

    How to download

    The dataset
    nemar dataset download on005523 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 on005523 --subjects sub-01,02 Also filters by --sessions, --tasks, --runs, --datatypes, --include and --exclude.
    A subset, step 1
    nemar dataset clone on005523 Clones git-annex pointers only; fetches no file content. Creates ./on005523.
    A subset, step 2
    cd on005523 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/on005523/v1.0.0/participants.tsv A direct HTTPS fetch works for any single file.

    Assess fit without downloading

    Participants table
    https://data.nemar.org/on005523/v1.0.0/participants.tsv
    Dataset description
    https://data.nemar.org/on005523/v1.0.0/dataset_description.json
    Directory listing
    https://data.nemar.org/on005523/v1.0.0/?format=json
    Catalog record
    https://api.nemar.org/datasets/on005523