# Title:

Auricle: A Multimodal Wearable Sensing Dataset for Cardiovascular and Hemodynamic Assessment

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# Description:

Auricle is a dataset comprising synchronous noninvasive cardiovascular signals collected from 42 healthy subjects (HC: Healthy Cohort) and 28 people with lived experience of heart failure (HFC: Heart Failure Cohort).  Most participants in the healthy cohort completed two 30-minute sessions on different days. During each session, participants performed at least three types of activities to alter their cardiovascular function. 

The dataset includes nine physiological channels including:
- Electrocardiography
- Phonocardiography
- Seismocardiography (IMU)
- Photoplethysmography (Finger)
- Photoplethysmography (Ear)
- Binaural In-Ear Cardiac Audio
- Continuous Arterial Pressure
- Respiratory Effort

Several derived hemodynamic channels are available including:
- Cardiac Output
- Stroke Volume
- Systemic Vascular Resistance

Two annotation types are also included as channels. These include:
- Activity-Annotations: Describes participant activity including stressors and rest.
- CNAP-System-Annotations: Any annotations generated by the CNAP device.

Finally demographic data is available. Some demographic data is only available for one of the two cohorts. These data include:
- All Cohorts
--- Height
--- Weight
--- Age
- Healthy Cohort Only
--- Sensor and body landmark position
- Heart Failure Cohort Only
--- Previous Myocardial Infarction
--- Previous Hypertension
--- Previous Diabetes Mellitus
--- Previous Atrial Fibrillation
--- Implantable Cardioverter Defibrillator
--- Cardiac Resynchronisation Therapy
--- Heart Failure Aetiology
--- LV ejection fraction
--- NYHA Class
--- Medication Regimen


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# Dataset:

<root>/
├── demographics.csv							# Demographic data (described above).
├── sensor_coordinates.csv					# A list of spatial coordinates (in centimeters) describing the location of anatomical landmarks and sensors extracted from images.
├── activity_labels.csv						# A list of numeric values associated with cardiovascular stressor activities. These are referenced in each session's "Activity-Annotations" channel.
├── RECORDS                               	# List of all WFDB records.
├── README.txt			           			# This file.
└── data/
    ├── {cohort_id}_{subject_num}_{session_num}/
    │   ├── {cohort_id}_{subject_num}_{session_num}.dat		# WFDB (https://wfdb.io/) file including physiological and annotation data as channels
    │   ├── {cohort_id}_{subject_num}_{session_num}.hea		# WFDB header file
    │
    ├── {cohort_id}_{subject_num}_{session_num}/
    │   └── ...
    │
    ├── {cohort_id}_{subject_num}_{session_num}/
    │   └── ...
     ...