Variable temporo-insular cortex neuroanatomy in primates suggests a bottleneck effect in eastern gorillas Abbreviated title: Variable temporo-insular cortex neuroanatomy

1. Center for the Advanced Study of Hominid Paleobiology and Department of Anthropology, The George Washington University, Washington DC 20052 2. Dallas Zoo, Dallas, TX 75203 3. Mountain Gorilla Veterinary Project, School of Veterinary Medicine, University of California Davis, Davis, CA 95616 4. Department of Life Sciences, University of Coimbra, 3001-056 Coimbra, Portugal 5. Neuroscience Institute, Georgia State University, Atlanta, GA 30303 6. Division of Developmental and Cognitive Neuroscience, Yerkes National Primate Research Center, Atlanta, GA 30329 7. Cleveland Metroparks Zoo, Cleveland, OH 44109 8. Rwanda Development Board, Department of Tourism and Conservation, Kigale, Rwanda 9. Department of Psychology, Trinity University, San Antonio, TX 78212 10. Department of Anthropology and School of Biomedical Sciences, Kent State University, Kent, OH 44240 11. Fishberg Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029 12. New York Consortium in Evolutionary Primatology, New York, NY 10024 13. Institute of Neuroscience and Medicine, Research Center Jülich, 52425 Jülich, Germany 14. C. & O. Vogt Institute of Brain Research, Heinrich-Heine University Düsseldorf, 40225 Düsseldorf, Germany 15. Department of Psychiatry, Psychotherapy, and Psychosomatics, RWTH Aachen University, 52074 Aachen, Germany