1. Department of Neurobiology; Duke University; Durham North Carolina USA
2. Duke Center for Neuroengineering; Duke University; Durham North Carolina USA
3. Department of Psychology and Neuroscience; Duke University; Durham North Carolina USA
4. Department of Biomedical Engineering; Duke University; Durham North Carolina USA
5. Department of Neurology; Duke University; Durham North Carolina USA. Edmond and Lily Safra International Institute of Neuroscience of Natal; Natal Brazil