PPG signals and cholesterol data.

Sure, here is the information translated into English:This repository contains a dataset that includes 13 patient records from the MIMIC database. Each patient is represented by a .mat file that stores PPG (Photoplethysmography) and ECG (Electrocardiogram) signals with a sampling frequency of 125 Hz.Additionally, the repository includes MATLAB scripts for signal visualization and the detection of Type 1 and Type 2 Premature Ventricular Complexes (PVCs). These scripts allow for detailed analysis of the PPG and ECG signals for each patient.Dataset StructureThe repository is composed of the following files and directories:<b>XXXm.mat Files</b>: These files contain the PPG and ECG signals of the patients. Each file in the format m.mat corresponds to a specific patient and contains signal samples obtained in a clinical setting.<b>señales_seleccionadasXXX.mat Files</b>: These files specifically contain the PPG and ECG channel signals from the m.mat files of each patient.<b>MATLAB Code (senales_ppg_ecg_visualizacion.m)</b>: A MATLAB script designed to visualize the ECG and PPG signals of each patient. This code allows loading the .mat files and displaying a segment of the signals to facilitate visual analysis. It is important to modify this line of code to select the patient to be analyzed:<pre><pre>data = load('señales_seleccionadas212.mat'); % Load the .mat file<br></pre></pre><b>MATLAB Code (cpvs12.m)</b>: Another MATLAB script that implements the detection of Type 1 and Type 2 PVCs in the PPG signal. The results of this detection are stored in a CSV file, which can be consulted later for detailed signal analysis.<b>Header Files (XXXhea.txt)</b>: These files contain the specifications for selecting the signals of each patient, allowing an understanding of the structure and available channels in the .mat files.Signal Descriptions<b>PPG (Photoplethysmography)</b>: Signals obtained using an optical sensor that measures changes in blood volume in tissues. These signals are useful for studying the pulse and other hemodynamic characteristics of patients.<b>ECG (Electrocardiogram)</b>: Electrical signals of the heart used to evaluate cardiac activity. The files in this dataset include several ECG leads that provide detailed information about heart function.I hope this translation helps. If you need further modifications or have any other requests, feel free to let me know!