To test their theory, the scientists took three mice—one with no ICER, one with lots of ICER, and one normal mouse—and gave them electric shocks after an ominous buzzer sound. The next day, when they sounded the buzzer again, the mouse without ICER reacted much more slowly than the other two. The one who had lots of ICER freaked out much earlier than the rest. We’ll see if this leads to anything useful to humans. The research will be published in the US soon.