1 Effects of long and short simulated flights on the saccadic eye movement velocity of aviators Leandro L. Di Stasi 1,2,3 ^, Michael B. McCamy 1 ^, Susana Martinez-Conde 1,4 , Ellis Gayles 5 , Chad Hoare 6 , Michael Foster 6 , Andrés Catena 2 , Stephen L. Macknik 1,4* 1 Barrow Neurological Institute, Phoenix, AZ, USA 2 Mind, Brain, and Behavior Research Center (CIMCYC). University of Granada, Granada, Spain 3 Joint Center University of Granada - Spanish Army Training and Doctrine Command, Granada, Spain 4 Department of Ophthalmology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA 5 Aviation Survival Training Center Miramar, San Diego, CA, USA 6 Marine Aircraft Group 39, 3 rd Marine Aircraft Wing, Marine Corps Base, Camp Pendleton, CA, USA. ^These authors contributed equally *Corresponding author: Stephen L. Macknik, SUNY Downstate Medical Center, 450 Clarkson Ave., MSC 58, Brooklyn, NY 11203, USA. E-mail: macknik@neuralcorrelate.com Short title: Saccadic velocity as a biomarker of aviator fatigue Abstract: 99 words Main text: 3306 words References Number: 64 Table Number: 1 Figure Number: 2 Author contributions SLM, LLDS, SMC, MBM, EG, CH, and MF designed the experiment. LLDS completed all experimental work at the 3 rd Marine Aircraft Wing Corp Base (Camp Pendleton, CA, USA). MBM, LLDS, SLM, SMC and AC analyzed and interpreted the data. LLDS, SMC, and SLM wrote the article. © 2015. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/