1. Department of Biology, University of Puerto Rico, Rio Piedras, San Juan, Puerto Rico;
2. Department of Neuroscience and Waggoner Center for Alcohol and Addiction Research, The University of Texas at Austin, Austin, TX, USA;
3. The Biologically Inspired Neural and Dynamical Systems (BINDS) Lab, Department of Computer Science, University of Massachusetts Amherst, Amherst, MA, USA