via Emily Anthes: “But the company’s first–and most successful–product is a little contraption known as the SpikerBox. On sale for $90, the device allows customers to observe neurons firing in a cockroach in real time. The SpikerBox has electrodes that can pick up on the electrical activity in a roach’s leg; this neural activity can then be transmitted through a speaker, as sound, or to the screen of an attached iPhone, as that characteristic visual pattern of peaks and valleys.”