1. Neuroscience Department, Trinity University, San Antonio, TX 78212, USA
2. Physics Department, Trinity University, San Antonio, TX 78212, USA
3. Pharmaceutical Sciences Department, Feik School of Pharmacy, University of the Incarnate Word, San Antonio, TX 78209, USA
4. Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh EH9 3BF, UK
5. Department of Microbiology and Environmental Toxicology, University of California at Santa Cruz, Santa Cruz, CA 95064, USA