Experiment Preparation at the Participant's Home for Home-Based Electroencephalography (EEG) Hyperscanning

To begin, put on gloves before handling the gel. Fill two syringes with gel using blunt tips for the passive electrodes and two syringes using finer tips for the active electrodes. Next, prepare two square pieces of masking tape for the electrocardiogram, or ECG electrodes, one for an infant and another for an adult.

After removing the gloves, turn on all laptops. Attach the EEG dongles to the respective laptops and confirm that the recording software is running. Then, connect the adult and infant amplifiers to the EEG recording software on the respective laptops via a wireless connection.

Ensure that both amplifiers have the same trigger port settings. Mount each of the three camcorders on a tripod and adjust them to ensure they can consistently capture the participants faces. Then, place the infant's high chair and the caregiver's chair at the edge of their table so that they face each other at an angle visible to the camcorders.