# Penn Electrophysiology of Encoding and Retrieval Study (PEERS) (on004395)

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

### What it is

- **Modalities:** BEH, EEG
- **Participants:** 364
- **Size:** 8.72 TB
- **Tasks:** VFFR, ltpFR, ltpFR2

### License and terms

- **License:** [CC0](https://creativecommons.org/publicdomain/zero/1.0/)
- **Recommended citation:** Kahana, M. J., Rudoler, J. H., Lohnas, L. J., Healey, K., Aka, A., Broitman, A., Crutchley, E., Crutchley, P., Alm, K. H., Katerman, B. S., Miller, N. E., Kuhn, J. R., Li, Y., Long, N. M., Miller, J., Paron, M. D., Pazdera, J. K., Pedisich, I., & Weidemann, C. T. (2026). Penn Electrophysiology of Encoding and Retrieval Study (PEERS) (Version v1.0.0) \[Data set\]. NEMAR. https://doi.org/10.82901/nemar.on004395
- **Reference 1:** [https://doi.org/10.21105/joss.01896](https://doi.org/10.21105/joss.01896)
- **Reference 2:** [https://doi.org/10.1038/s41597-019-0104-8](https://doi.org/10.1038/s41597-019-0104-8)

### Where the bytes are

- **Latest version (always current):** [https://data.nemar.org/on004395/latest/](https://data.nemar.org/on004395/latest/)
- **This version (v1.0.0):** [https://data.nemar.org/on004395/v1.0.0/](https://data.nemar.org/on004395/v1.0.0/)

### How to download

- **The dataset:** `nemar dataset download on004395`. 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 on004395 --subjects sub-01,02`. Also filters by --sessions, --tasks, --runs, --datatypes, --include and --exclude.
- **A subset, step 1:** `nemar dataset clone on004395`. Clones git-annex pointers only; fetches no file content. Creates ./on004395.
- **A subset, step 2:** `cd on004395`. 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/on004395/v1.0.0/participants.tsv](https://data.nemar.org/on004395/v1.0.0/participants.tsv). A direct HTTPS fetch works for any single file.

### Assess fit without downloading

- **Participants table:** [https://data.nemar.org/on004395/v1.0.0/participants.tsv](https://data.nemar.org/on004395/v1.0.0/participants.tsv)
- **Dataset description:** [https://data.nemar.org/on004395/v1.0.0/dataset_description.json](https://data.nemar.org/on004395/v1.0.0/dataset_description.json)
- **Directory listing:** [https://data.nemar.org/on004395/v1.0.0/?format=json](https://data.nemar.org/on004395/v1.0.0/?format=json)
- **Catalog record:** [https://api.nemar.org/datasets/on004395](https://api.nemar.org/datasets/on004395)