you may write a 3-5 page research paper on a topic related to single/double-opponent neuron. Any student who writes a paper is expected to do supplemental research (e.g. original research articles, at the library, Pubmed, etc.) in support of that paper, as this is to be a “library” research project, reporting on the theoretical and empirical work of others, as reported in the scientific literature. A strong paper will deal with a tightly defined topic in a tightly focused manner. The paper should be written in an appropriate scientific language, and use proper scientific citation style. It should present an up-to-date treatment of the subject, including an absolute minimum of 5 primary references from the modern, professional animal behavior literature.