AnxiECG-PPG Database: Synchronized ECG and mobile PPG Signals during Baseline, Physical Activated, and Psychological Activated Conditions

The AnxiECG-PPG Database contains synchronized electrocardiogram (ECG) and mobile-acquired photoplethysmography (PPG) recordings from 47 healthy participants. Moreover, the acquisition protocol assesses three distinct states: a 5-minute Baseline, a 1-minute Physical Activated State, and a Psychological Activated state provoked through emotion-induced videos (negative, positive, and neutral emotion valence). Recordings were conducted at the Institute of Electronics and Informatics Engineering of Aveiro and the Institute of Biophysics and Biomedical Engineering from February to March 2024. The BioSignalPlux Explorer Research Kit captured ECG data, while PPG signals were acquired via smartphone (iPhone 11, Apple U.S.) with the HOLI app by NEVARO Tech. This dataset aims to evaluate PPG's potential in deriving cardiac metrics and its viability as an anxiety biomarker, with a comparative analysis against ECG signal recordings.