Innate heuristics and fast learning support escape route selection in mice

### Dataset structure

Each experimental session (from one mouse on one arena) was composed of one or more recording. Each recording
was saved as a separate video and as such the tracking data and stimuli metadata are saved separately for each
recording.

The tracking data for each recording is saved in a file `DATE_SESSION_RECORDING_tracking.h5` with DLC pose position for
four body parts: nose, neck, body and base of the tail.
The video data was acquired at 30 or 40 FPS, 30FPS recordings were upsampled so that all tracking data
saved here is at 40 FPS.
If `_recording` is missing from the filename, the session had only one recording.

The `DATE_SESSION_RECORDING_stimuli.csv` files store stimuli metadata for each recording.
The columns `overview_frame` and `overview_frame_end` denote stimulus onset and offset.

The `session_metadata.csv` stores metadata about all sessions and recordings in the data set.
Metadata include mouse name, arena type (1-5) and if the mouse was naive or not (1/0).

For the analyses in the manuscript, stimulus times were used to define trials and the tracking data in the few seconds
after the stimulus onbset was analzed (from stimulus onset to mouse entering the shelter). For convenience we provide
`trials.h5` which stores all tracking data and metadata for all trials and `trials_metadata.csv` that stores the metadata only.

### 数据集结构

本数据集的每一次实验会话（对应单只小鼠在单个实验箱中的实验）均包含一次或多次录制。每次录制均保存为独立视频文件，因此追踪数据与刺激元数据均按单次录制分别存储。

每次录制的追踪数据均存储于名为`DATE_SESSION_RECORDING_tracking.h5`的文件中，内含小鼠四个身体部位（鼻部、颈部、躯干与尾基部）的DeepLabCut（DLC）姿态追踪数据。
视频数据采集帧率为30或40 FPS，其中30 FPS的录制数据会进行上采样处理，确保本文件中存储的所有追踪数据帧率统一为40 FPS。
若文件名中未包含`_recording`字段，则说明该会话仅包含一次录制。

`DATE_SESSION_RECORDING_stimuli.csv`文件存储单次录制对应的刺激元数据，其中`overview_frame`与`overview_frame_end`两列分别代表刺激呈现的起始与结束帧。

`session_metadata.csv`文件存储本数据集中所有实验会话与录制任务的元数据，包括小鼠编号、实验箱类型（1至5）以及小鼠是否为初次参与实验（1代表是，0代表否）。

针对本研究手稿中的分析需求，我们以刺激呈现时刻定义实验试次，并对刺激起始后至小鼠进入庇护所时段内的追踪数据开展分析。为便于使用，我们额外提供了`trials.h5`与`trials_metadata.csv`文件：前者存储所有实验试次的全部追踪数据与元数据，后者仅存储试次相关元数据。