Fatal accidents in complex system, as military and civil aviation, generally occur through the accumulation of multiple factors (including pilot fatigue or overload). Even though these accidents are rare – one accident per one million of aircraft take-offs -, it is universally agreed that 80 percent of aviation incidents (defined as an occurrence, other than an accident, associated with specific procedures that affect the operation safety) involves human factors. The human dimension is the determinant factor in producing and, in turn, avoiding potential hazards. Military aviators are required to perform long and continuous daytime/nighttime operations to gain a tactical advantage over the enemy, and have to face very complex situations (including emergencies) at any time. Thus, the development of non-invasive methods to monitor and detect fatigue and/or cognitive overload in soldiers, and, thus, prevent catastrophic outcomes in operational environments, is an area of great interest to our society.

We work to optimize soldier performance, improving aviation safety and training protocols. Our research focuses on integrating brain activity and gaze behavior, as well as other psychophysiological indices, during real and simulated military flights to assess the aviator’s fitness-for- duty.


Diaz-Piedra, C., Rieiro, H., & Di Stasi, L.L. (2021). Monitoring army drivers’ workload during off-road missions: An experimental controlled field study. Safety science134, 105092.

Di Stasi L.L. & Diaz-Piedra C. (2021). Re-examining the Pioneering Studies on Eye Movements in Aviation: Connecting the Past to the Present. The International Journal of Aerospace Psychology, 1-13.

Diaz-Piedra, C., Sebastián, M. V., & Di Stasi, L. L. (2020). EEG theta power activity reflects workload among army combat drivers: an experimental study. Brain sciences10(199), 1-14.

Díaz-Piedra, C., Rieiro,H., Cherino, A., Fuentes, L., Catena, A., & Di Stasi, L.L (2019). The effects of flight complexity on gaze entropy: an experimental study with fighter pilots. Applied Ergonomics, 77, 92-99.

Di Stasi L.L. & Diaz-Piedra, C. (2019). Eye movements research in aviation: Past, present, and future. In M. Vidulich and P. Tsang (Eds.), Improving aviation performance through applying engineering psychology. Advances in Aviation Psychology (Volume 3) (Chapter 7th). Taylor and Francis: London, UK.

Diaz-Piedra, C., Sebastián, M. V., Fuentes Merlos, J., Antuña Martínez, J. E., Morales, J. M., & Di Stasi, L. L. (2018). The effects of mental workload on the EEG activity: an experimental study with LMV vehicles drivers. Talk presented at the VI National Conference in R&d in Defense and Safety, November 20-22, Valladolid (Spain).

Díaz-Piedra,C., Morales, J. M., Catena, A., Fuentes, Suárez, J., Sebastián, M.V. & Di Stasi, L.L. (2017). Proyecto EYES: La detección de las variaciones de sobrecarga e infracarga mental en pilotos militares usando la velocidad sacádica. Presentación en el DESEi+d 2017. V Congreso Nacional de I+D en Defensa y Seguridad. Toledo, España, 22-24 Noviembre 2017.

Díaz-Piedra, C., Catena, A., Fuentes, L.J., & Di Stasi, L.L. (2017). The oculometer training tape technique: the revival. 19th International Symposium on Aviation Psychology. Wright State University. Dayton, Ohio, USA. May 8 – 11. P. 431-436.

Diaz-Piedra, C., Rieiro, H., Suárez, J., Rios-Tejada, F., Catena, A., & Di Stasi, L.L. (2016). Fatigue in the military: towards a fatigue detection test based on the saccadic velocity. Physiological measurement37, N62-N75.

Di Stasi, L.L., McCamy, M. B., Martinez-Conde, S., Gayles, E., Hoare, C., Foster, M., … & Macknik, S.L. (2016). Effects of long and short simulated flights on the saccadic eye movement velocity of aviators. Physiology & behavior153, 91-96.

Di Stasi, L.L., Diaz‐Piedra, C., Suárez, J., McCamy, M.B., Martinez‐Conde, S., Roca‐Dorda, J., & Catena, A. (2015). Task complexity modulates pilot electroencephalographic activity during real flights. Psychophysiology52, 951-956.

Di Stasi, L.L., Cabestrero, R., McCamy, M.B., Ríos, F., Catena, A., Quirós, P., … & Martinez‐Conde, S. (2014). Intersaccadic drift velocity is sensitive to short‐term hypobaric hypoxia. European Journal of Neuroscience39, 1384-1390.

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