# Very-High-Density Diffuse Optical Tomography System Validation Dataset (on007463)

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

### What it is

- **Modalities:** ANAT, FUNC, NIRS
- **Participants:** 8
- **Size:** 237 GB
- **Tasks:** AC001, AC002, AC1, AC2, GV001, GV002, GV003, GV1, GV2, HW001, HW002, HW003, HW1, HW2, MOT001, MOT002, MOT1, MOT2, MOV001, MOV002, MOV003, MOV004, MOV1, MOV2

### License and terms

- **License:** [CC0](https://creativecommons.org/publicdomain/zero/1.0/)
- **Recommended citation:** Fogarty, M., Rafferty, S. M., Markow, Z. E., O’Sullivan, A. C., Svoboda, C. F., George, T., King, K., Wilhelm, D., Tripathy, K., Mugler, E. M., Naufel, S., Yin, A., Trobaugh, J. W., Eggebrecht, A. T., Richter, E. J., & Culver, J. P. (2026). Very-High-Density Diffuse Optical Tomography System Validation Dataset (Version v1.0.0) \[Data set\]. NEMAR. https://doi.org/10.82901/nemar.on007463

### Where the bytes are

- **Latest version (always current):** [https://data.nemar.org/on007463/latest/](https://data.nemar.org/on007463/latest/)
- **This version (v1.0.0):** [https://data.nemar.org/on007463/v1.0.0/](https://data.nemar.org/on007463/v1.0.0/)

### How to download

- **The dataset:** `nemar dataset download on007463`. 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 on007463 --subjects sub-01,02`. Also filters by --sessions, --tasks, --runs, --datatypes, --include and --exclude.
- **A subset, step 1:** `nemar dataset clone on007463`. Clones git-annex pointers only; fetches no file content. Creates ./on007463.
- **A subset, step 2:** `cd on007463`. 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/on007463/v1.0.0/participants.tsv](https://data.nemar.org/on007463/v1.0.0/participants.tsv). A direct HTTPS fetch works for any single file.

### Assess fit without downloading

- **Participants table:** [https://data.nemar.org/on007463/v1.0.0/participants.tsv](https://data.nemar.org/on007463/v1.0.0/participants.tsv)
- **Dataset description:** [https://data.nemar.org/on007463/v1.0.0/dataset_description.json](https://data.nemar.org/on007463/v1.0.0/dataset_description.json)
- **Directory listing:** [https://data.nemar.org/on007463/v1.0.0/?format=json](https://data.nemar.org/on007463/v1.0.0/?format=json)
- **Catalog record:** [https://api.nemar.org/datasets/on007463](https://api.nemar.org/datasets/on007463)