Betawaves: brainwaves related to learning, and rest
Interference: the process of someone deducing something; also patterns that that emerge when the waves from two sources meet each other; also something getting in the way, causing a disturbance
In other words betawave inference might be what happen when my thoughts are picked up by you, are put on top of your experience and new insights are born. Or perhaps I just want to disrupt your brain.