*3.1. Participants*

We collected the EEG and GSR data from 28 Korean participants (13 males and 15 females) who were either students or staff at a university in the Republic of Korea. The participants' ages ranged from 20 to 34, with an average age of 23.62. We collected the data in two sessions: the first session was carried out with 18 participants (6 males and 12 females), and the second session was carried out with 10 participants (7 males and 3 females). All data collection procedures were designed and executed with careful consideration of legal and ethical issues. All participants elected to join the experiment voluntarily, and they were instructed to quit the experiment at any time if they felt the urge to do so. To secure the safety of the participants, an emergency kit was prepared as a countermeasure for accidents. All collected data were anonymized and stored securely in a password-protected data storage. Finally, a data collection protocol (see Section 3.3) was designed with consideration of the participants' legal rights.
