Details: This error message may occur when you try to start your research session.
Cause:
If you are using the headphones, it is because the headphones are not snug around the head and ambient light is being detected by the bio-sensors in the headphones. The ambient light interferes with the proper functioning of the bio-sensors. If you are using the black box, ambient light might be entering the chamber.
Solution:
It is best to conduct the investigation in low ambient light conditions, draw the blinds or curtains and turn off any strong artificial lights in the room. In some situations, the subject's head does not conform well with the standard headphones so be sure that the ears are inside the ear chamber of the headphones. We do offer an alternate type of headphones that may be more suitable for children and smaller head sizes.