You are a team of doctors trying to get a neuron to fire. Will you be the first doctor to make the neuron reach its critical threshold and fire a signal? Will you be a… neuro hero? Positive and negative cards are arranged in a tree, feeding signals to a neuron. Players take turns flipping over cards, trying to be the first player to reach or cross the threshold of 15 points. Along the way they have the option to use one of five "neuromodulators" which give special abilities. A fun way to learn about neuroscience or just enjoy your critical thinking skills! —description from the designer