1：Experimental Design and Method Selection:

The paper discusses the use of printed electronics to create flexible and soft electrode arrays for EEG and sEMG recordings, focusing on material selection (e.g., conductive inks like silver, carbon, PEDOT), printing methods (screen and inkjet printing), and data analysis techniques such as blind source separation (BSS) and fastICA algorithm.

2：Sample Selection and Data Sources:

Human volunteers were used for experiments, with ethical approval from Tel Aviv University. Data were collected from various body parts like forehead, cheek, eyebrow, and forearm.

3：List of Experimental Equipment and Materials:

Printed electrode arrays on soft substrates (e.g., polyimide, polyester, polyurethane), conductive inks, wireless recording systems, and standard electrophysiological recording equipment.

4：Experimental Procedures and Operational Workflow:

Electrode arrays were placed on the skin, and signals were recorded wirelessly. Procedures included testing for stability, signal quality, and prolonged use in settings like sleep monitoring and facial expression mapping.

5：Data Analysis Methods:

BSS methods, including fastICA, were applied to reduce cross-talk and variability; root mean square (RMS) calculations and other signal processing techniques were used for analysis.