When was the first time you heard the sound of a brain cell? Was it in elementary school, high school, or college? Chances are your answer is "never," as we neuroscientists have typically had to go to major research universities and use expensive equipment to learn about and investigate the brain. With the SpikerBox (available open-source from http://backyardbrains.com) you can now listen to living neurons from insects. With this android app, you can view what the spikes of neurons look like an