1971/1973 - Fellow at the Institute of Human Physiology (University of Catania, I);

1974 - (as from June to October) - Assistant Professor;

1974 - (as from November to January 1976) - Army service (Officer at the 19th Group Cavalry Squadrons);

1976 / 1979 - Fellow (University of Catania, I - Institute of Human Physiology);

1980 / 1992 - Researcher (University of Catania, I - Institute of Human Physiology, after called Department of Physiological Sciences);

1984  - Researcher at the "Laboratoire de Physiologie Générale" Department of "Physiologie et Biochimie" of the University of Strasbourg, F;

1989 - (as from July to May 1990) - Visiting Professor at the Laboratory of the Neurophysiology of the Department of Cell Biology and Anatomy, University of North Carolina at Chapel Hill, NC, USA;

1992 - (as from November to September 2002) - Associate Professor of General Physiology at the Faculty of mathematical, physical and natural Sciences - University of Catania, I;

1998 / 2004 - Vice Dean of the Faculty of mathematical, physical and natural Sciences - University of Catania, I;

2000 - (February) - Visiting Professor at the Faculty of "Sciences et Techniques de Saint-Jerome of the University of Marseille, F;

2002 - (as from October) - Full Professor of Physiology, Faculty of mathematical, physical and natural Sciences - University of Catania, I;

2002 - (as from November) - Head of the Department of Physiological Sciences of the University of Catania, I;

2005 - (November) - Head of the Department of Physiological Sciences of the University of Catania, I;

2007 - (June) - Vice Dean of the Faculty of mathematical, physical and natural Sciences - University of Catania, I;

2007 - (September) - Tutor at the High School of the University of Catania, I;

2007 - Member of the Advisory Board of the International Association Of Technology, Education And Development;

2007 / 2009 - Member of the Referees of the Italian Minister of the Education, University and Research for the evaluation of Research Proposals;

2009 - Member of the Advisory Board of the Member of the Advisory Board of the International Association Of Technology, Education And Development;

2009 - (November) - 2011 (October) – Dean of the Faculty of mathematical, physical and natural Sciences of the University of Catania - I;

2013 - Master of Ceremony - University of Catania, Italy;

2015 - (as from November 1st) Retired Position

2019 - (as from January) Professor of Aviation Physiology, Human Factor & Air Law (ATO.0043.IT).