1. Laboratory of Electrophysiology, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza 60.714-903, Ceará, Brazil
2. Laboratory of Experimental Physiology, Superior Institute of Biomedical Sciences, State University of Ceará, Fortaleza 60.714-903, Ceará, Brazil
3. Center of Exact Science and Technology, State University of Vale do Acaraú, Sobral 62.040-370, Ceará, Brazil