tOLIet: Single-lead Thigh-based Electrocardiography Using Polimeric Dry Electrodes

Our team previously introduced an innovative concept for an "invisible"
Electrocardiography (ECG) system, incorporating electrodes and sensors into a
toilet seat design to enable signal acquisition from the thighs. Building upon
that work, we now present a novel dataset featuring real-world, single-lead
ECG signals captured at the thighs, offering a valuable resource for advancing
research on thigh-based ECG for cardiovascular disease assessment. To our
knowledge, this is the first dataset of its kind.

The tOLIet dataset comprises 149 ECG recordings collected from 86 individuals
(50 females, 36 males) with an average age of 31.73 ± 13.11 years, a mean
weight of 66.89 ± 10.70 kg, and an average height of 166.82 ± 6.07 cm.
Participants were recruited through direct contact with the Principal
Investigator at Centro Hospitalar Universitario de Lisboa Central (CHULC) and
via clinical consultations conducted at the same institution. Each recording
includes four differential signals acquired from electrode pairs embedded in
the toilet seat, with reference signals obtained from a standard 12-lead
hospital ECG system.