Comparing portable and reference system for evaluating brain electrical activity

The investigational device (a portable steady-state visual-evoked potential (SSVEP)/EEG headset) will be evaluated on participants to acquire their SSVEP. This involves fitting the headset to participant's head and applying saline solution to the contact electrodes to acquire good contact with the participant. A smartphone will be used to control the investigational device only. In addition, a reference-type EEG system will also be used for comparison purposes. Both systems will be fitted by a trained researcher at the principal investigator's nominated site. The order of the system assessed will be alternated based on their subject ID's: odd numbered ID's will have the investigational device fitted first, and vice-versa. The procedures will be performed individually. Both systems will be on the head for approximately 5-10 minutes. Participants will be asked to sit still while having the systems on their head. During the procedure, they will be asked to view a flashing light for 30 seconds: this flashing light will come from the investigational device. When the reference system is on the participant's head, they will be asked to hold up the investigational device to their eyes without the back of the device fitted to their head. In total, 4 sequences will be performed (2 viewings of the flashing light for the reference and investigational device each). The procedure will last for approximately 30 minutes in total. No follow-up will be required.