1. Department of Communication Sciences and Disorders, University of South Carolina, Columbia, USA
2. Department of Neurology, Johns Hopkins University School of Medicine; Department of Cognitive Science, Johns Hopkins University, Baltimore, USA
3. Department of Physical Medicine and Rehabilitation, Johns Hopkins School of Medicine; Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA
4. Cognitive Sciences, School of Social Sciences, University of California, Irvine, USA
5. Department of Psychology, University of South Carolina, Columbia, USA
6. Department of Neurology, Medical University of South Carolina, Charleston, South Carolina, USA