# Data

Four sessions, one animal, two brain regions. Parquet format — load with
`pandas.read_parquet`, or use the helpers in `../challenge_utils.py`.

| File | Region | Date | Trials |
|---|---|---|---|
| `IM-1056_PFC_2025-12-13.parquet` | prefrontal cortex | 2025-12-13 | 150 |
| `IM-1056_M1_2025-12-14.parquet` | motor cortex | 2025-12-14 | 150 |
| `IM-1056_PFC_2025-12-15.parquet` | prefrontal cortex | 2025-12-15 | 150 |
| `IM-1056_M1_2025-12-16.parquet` | motor cortex | 2025-12-16 | 150 |

Region and date are encoded in the **filename**. Whether the columns inside
the file agree with the filename is something you should check rather than
assume.

---

## Columns

Long format: one row = one time point on one trial.

| Column | Type | Meaning |
|---|---|---|
| `Animal` | int | Subject ID |
| `Region` | mixed | Recording region as logged by the acquisition software |
| `Date` | str | Session date, `MM/DD/YYYY` |
| `Trial` | int | Trial number **within this session**; restarts at 1 each session |
| `Outcome` | str | `correct` or `incorrect` — constant within a trial |
| `Delay_s` | float | Delay duration on this trial — constant within a trial |
| `Time_s` | float | Seconds relative to cue onset; negative is before the cue |
| `Ch410_dFF` | float | Isosbestic reference channel, ΔF/F |
| `Ch470_dFF` | float | Noradrenaline sensor, ΔF/F |
| `Ch560_dFF` | float | Dopamine sensor, ΔF/F |

---

## Recording parameters

- Sampling rate ≈ 26.7 Hz
- Trial window: −5 s to +15 s relative to cue onset (533 samples per trial)
- Cue: 0 to 1 s
- Delay period: 1 s to 1 + `Delay_s`
- Delays present in these files: 0, 1, 2, 3 s

---

## Provenance

These are peri-event time histograms exported from the lab's photometry
pipeline. Trials have already been aligned to cue onset and converted from raw
fluorescence to ΔF/F. No trials have been excluded, no channels have been
regressed against each other, and nothing has been smoothed.

In other words: this is the state the data is actually in when someone in the
lab starts working on it. Anything that looks unusual is a genuine property of
these recordings, not something inserted for the exercise.

---

## Please

Unpublished data from an ongoing project. Don't share or post it, and delete
your copy when you are finished.
