1. Department of Electrical Engineering, Postgraduate Biomedical Engineering, Universidad Autónoma Metropolitana, Mexico City, México
2. Department of Physics, Universidad Autónoma Metropolitana, Mexico City, Mexico
3. Department of Physics, Instituto Nacional de Investigaciones Nucleares, Ocoyoacac, Mexico
4. Conacyt- Neurological Diseases Medical Research Unit, Instituto Mexicano del Seguro Social, Doctores, Mexico City, Mexico
5. Center for Research and Advanced Studies, of the National Polytechnic Institute, Mexico City, Mexico