1. Behavioral Pharmacology Laboratory, Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, Brazil
2. Department of Chemistry and Pharmaceutical Sciences, University of Ferrara, Ferrara, Italy
3. Department of Medical Sciences, Section of Pharmacology, and National Institute of Neuroscience, University of Ferrara, Ferrara, Italy
4. Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy