1Department of Pharmacology, Penn State College of Medicine, Hershey, PA, 17033-0850, USA
2Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, 17033-0850, USA
3Center for Neural Engineering, Pennsylvania State University, University Park, PA
4Department of Biomedical Engineering, Pennsylvania State University, University Park, PA
5Department of Engineering Science & Mechanics, Pennsylvania State University, University Park, PA
