It's a concept easily tested. In fact we do it in middle school science club every year. Put several people in front of the room with their backs to the class. They are to write down the time on the wall clock when they fell they are being stared at. The rest of the class then stares or puts their heads down for three minutes at a time according to a randomized schedule they have been given. The teacher monitors to make sure all students are staring or not on schedule, and the "receivers" are not peeking.
Match up the times when receivers felt stared at with the actual intervals of transmission, and calculate a simple correlation coefficient.
We get the same result year in and year out, but the kids love doing it.