# Multi-session longitudinal motor imagery EEG dataset (Kumar et al. 2024) (nm000177)

## How to use the data (for agentic research)

### What it is

- **Modalities:** EEG
- **Participants:** 18
- **Size:** 14.4 GB
- **Tasks:** imagery
- **HED version:** 8.4.0

### License and terms

- **License:** CC-BY-4.0
- **Recommended citation:** Kumar, S., Alawieh, H., Racz, F. S., Fakhreddine, R., & Millan, J. D. R. (2026). Multi-session longitudinal motor imagery EEG dataset (Kumar et al. 2024) (Version v1.0.4) \[Data set\]. NEMAR. https://doi.org/10.82901/nemar.nm000177

### Where the bytes are

- **Latest version (always current):** [https://data.nemar.org/nm000177/latest/](https://data.nemar.org/nm000177/latest/)
- **This version (v1.0.4):** [https://data.nemar.org/nm000177/v1.0.4/](https://data.nemar.org/nm000177/v1.0.4/)

### How to download

- **The dataset:** `nemar dataset download nm000177`. 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 nm000177 --subjects sub-01,02`. Also filters by --sessions, --tasks, --runs, --datatypes, --include and --exclude.
- **A subset, step 1:** `nemar dataset clone nm000177`. Clones git-annex pointers only; fetches no file content. Creates ./nm000177.
- **A subset, step 2:** `cd nm000177`. 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/nm000177/v1.0.4/participants.tsv](https://data.nemar.org/nm000177/v1.0.4/participants.tsv). A direct HTTPS fetch works for any single file.

### Assess fit without downloading

- **Participants table:** [https://data.nemar.org/nm000177/v1.0.4/participants.tsv](https://data.nemar.org/nm000177/v1.0.4/participants.tsv)
- **Dataset description:** [https://data.nemar.org/nm000177/v1.0.4/dataset_description.json](https://data.nemar.org/nm000177/v1.0.4/dataset_description.json)
- **Directory listing:** [https://data.nemar.org/nm000177/v1.0.4/?format=json](https://data.nemar.org/nm000177/v1.0.4/?format=json)
- **Catalog record:** [https://api.nemar.org/datasets/nm000177](https://api.nemar.org/datasets/nm000177)