The buzzers are for EMDR, the kind of therapy we sometimes do. We decide on an event in my past, choose a negative statement about myself that fits, then T operates the buzzers. I hold one in each hand and they vibrate alternately, right and left. T asks me to think about the incident while the buzzers are vibrating, and she stops (maybe after 30 seconds) I tell her what image or thought is in my mind. Then she repeats the process. EMDR is a way to treat trauma; it's supposed to change the patterns of your brain somehow. I don't know if I believe it, but I know that when we do it, it's productive because I come up with things I wouldn't have said otherwise. My T said there's no right or wrong way to do EMDR, and she uses it with most of her clients. Originally, the T just waved her fingers back and forth in front of the person's eyes to stimulate alternate sides of the brain. You can google EMDR to find out more.