Gkivogkli Polyxeni received the Diploma degree in Biology in 2008, and the M.Sc. in Sociology and Ethics, School of Theology, 2011 both from Aristotle University of

Thessaloniki (AUTH), Greece. She was also collaborating from December 2012 to September 2013 as voluntary research assistant in the Greek Association of

Alzheimer’s Disease & Related Disorders (specialized in EEG data acquisition). She is currently collaborating through the Laboratory of Medical Physics, School of

Health Sciences, Aristotle University of Thessaloniki with the European Space Agency (ESA) studying sleep disorders due to lack of gravity.