rapids/docs/features/empatica-blood-volume-pulse.md

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# Empatica Blood Volume Pulse
Sensor parameters description for `[EMPATICA_BLOOD_VOLUME_PULSE]`:
|Key                              | Description |
|----------------|-----------------------------------------------------------------------------------------------------------------------------------
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|`[CONTAINER]`| Name of the CSV file containing blood volume pulse data that is compressed inside an Empatica zip file. Since these zip files are created [automatically](https://support.empatica.com/hc/en-us/articles/201608896-Data-export-and-formatting-from-E4-connect-) by Empatica, there is no need to change the value of this attribute.
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## DBDP provider
!!! info "Available time segments and platforms"
- Available for all time segments
!!! info "File Sequence"
```bash
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- data/raw/{pid}/empatica_blood_volume_pulse_raw.csv
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- data/raw/{pid}/empatica_blood_volume_pulse_with_datetime.csv
- data/interim/{pid}/empatica_blood_volume_pulse_features/empatica_blood_volume_pulse_{language}_{provider_key}.csv
- data/processed/features/{pid}/empatica_blood_volume_pulse.csv
```
Parameters description for `[EMPATICA_BLOOD_VOLUME_PULSE][PROVIDERS][DBDP]`:
|Key                              | Description |
|----------------|-----------------------------------------------------------------------------------------------------------------------------------
|`[COMPUTE]` | Set to `True` to extract `EMPATICA_BLOOD_VOLUME_PULSE` features from the `DBDP` provider|
|`[FEATURES]` | Features to be computed from blood volume pulse intraday data, see table below |
Features description for `[EMPATICA_BLOOD_VOLUME_PULSE][PROVIDERS][DBDP]`:
|Feature |Units |Description|
|-------------------------- |-------------- |---------------------------|
|maxbvp |- |The maximum blood volume pulse during a time segment.
|minbvp |- |The minimum blood volume pulse during a time segment.
|avgbvp |- |The average blood volume pulse during a time segment.
|medianbvp |- |The median of blood volume pulse during a time segment.
|modebvp |- |The mode of blood volume pulse during a time segment.
|stdbvp |- |The standard deviation of blood volume pulse during a time segment.
|diffmaxmodebvp |- |The difference between the maximum and mode blood volume pulse during a time segment.
|diffminmodebvp |- |The difference between the mode and minimum blood volume pulse during a time segment.
|entropybvp |nats |Shannons entropy measurement based on blood volume pulse during a time segment.
!!! note "Assumptions/Observations"
For more information about BVP read [this](https://support.empatica.com/hc/en-us/articles/360029719792-E4-data-BVP-expected-signal).