## Appendix A Dataset File Formats  
The MMD-MSD folder and file names correspond to the types of information that they contain:  
**Folder Physiological_Signals_raw**--contains 100 subfolders, 1 per participant. The subfolder names correspond to the participant ID. Each contains raw recordings of the physiological signals. For example, subfolder 001 contains the raw physiological signals for Participant 1. Each subfolder contains the following files:  
1. File **ACC.csv**--the three-axis accelerometer data in separate columns per axis.  
\begin{tabular}{c c c} \hline \hline  & Timestamp start & Timestamp start \\  & Sampling rate & Sampling rate \\  & Data start & Data start \\  & Data end & Data end \\ \hline \hline
2. & File **BVP.csv**--recording with the BVP/PPG signal. \\ \hline \hline  & & Timestamp start \\  & Sampling rate \\  & & 9 rows of zeros \\  & Data start \\  & &... \\  & Data end \\ \hline \hline
3. & File **EDA.csv**--recording with the EDA signal. \\ \hline \hline  & & Timestamp start \\  & Sampling rate \\  & & 0 \\  & Data start \\  & &... \\  & Data end \\ \hline \hline \end{tabular}  
\begin{tabular}{c c} \hline \hline \multirow{2}{*}{4.} & \multirow{2}{*}{File **HR.csv**--average heart rate based on the BVP/PPG signal.} \\ \hline \hline \multirow{4}{*}{5.} & \multirow{2}{*}{File **IBI.csv**--inter-beat intervals based on the BVP/PPG signal.} \\ \hline \hline \multirow{4}{*}{5.} & \multirow{2}{*}{File **IBI.csv**--inter-beat intervals based on the BVP/PPG signal.} \\ \hline \hline \multirow{4}{*}{6.} & \multirow{2}{*}{File **TEMP.csv**--the calculated temperature.} \\ \hline \hline \multirow{4}{*}{7.} & Timestamp start \\  & Sampling rate \\  & Data start \\  & \(\ldots\) \\  & Data end \\ \hline \hline \end{tabular}  
\begin{tabular}{c c} \hline \hline \multirow{2}{*}{7.} & \multirow{2}{*}{File **tags.csv**--timestamp for each event. Each **tags.csv** file contains four events: start and end of Stroop Test #1, start and end of Stroop Test #2.} \\ \hline \multirow{4}{*}{8.} & \multirow{2}{*}{File **Info.txt**--information about each file in the folder.} \\  & **Folder Pictures_raw**--contains pictures in.jpg SOOC (straight-out-of-camera). \\ \cline{1-1}  & **Folder Pictures_with_markers**--contains pictures in.jpg with markers. Participants' IDs correspond to the questionnaire's IDs. The picture files were named as follows: \\ \hline \hline \multirow{2}{*}{7.} & \multirow{2}{*}{File **tags.csv**--timestamp for each event. Each **tags.csv** file contains four events: start and end of Stroop Test #1, start and end of Stroop Test #2.} \\ \hline \multirow{4}{*}{8.} & \multirow{2}{*}{File **Info.txt**--information about each file in the folder.} \\  & **Folder Pictures_raw**--contains pictures in.jpg SOOC (straight-out-of-camera). \\ \cline{1-1}  & **Folder Pictures**with_markers**--contains pictures in.jpg with markers. Participants' IDs correspond to the questionnaire's IDs. The picture files were named as follows: \\ \hline \hline \multirow{2}{*}{**Folder Video**--contains overhead camera video of the participants. The video files are SOOC (straight-out-of-camera). For the recording order, refer to the file \"Participants_ID_and_record_order.xlsx\". \\ \hline \multirow{2}{*}{**Folder Angles**--postural angle calculations for all body postures captured in pictures are documented for each participant in separate.csv files: Sitting_profile_position_corrected; Sitting_profile_position_uncorrected; Sitting_profile_position_with_stability_disk; Standing_facing_position_corrected; Standing_facing_position_uncorrected; Standing_profile_position_corrected; Standing_profile_position_uncorrected.} \\ \hline \multirow{2}{*}{**Folder Features**--contains feature vectors computed from the peripheral physiological signals (PPG and EDA).} \\ \end{tabular}