Van Beekvelt, M. C. Colier, W. N. Wevers, R. A. Van and B. G. Engelen, “Performance of Near-Infrared Spectroscopy in Measuring Local O₂ Consumption and Blood Flow in Skeletal Muscle,” Journal of Applied Physiology, Vol. 90, No. 2, 2001, pp.511-519.

has been cited by the following article:

• TITLE: Monitoring Mental Fatigue in Analog Space Environment Using Optical Brain Imaging

  AUTHORS: Xuejun Jiao, Jing Bai, Shanguang Chen, Qijie Li

  KEYWORDS: Mental Fatigue; Information Entropy; Modeling; fNIR

  JOURNAL NAME: Engineering, Vol.5 No.5B, July 26, 2013

  ABSTRACT: Accurate assessment of mental fatigue level would improve operational safety and efficacy of astronauts for long-term space flight. Identification of neurophysiological markers can index impending overload or fatigue before performance decrements using neuroimaging technologies. The current study utilized functional near-infrared spectroscopy (fNIR) to investigate the relationship of hemodynamic response in prefrontal cortex with changes of mental fatigue level, task performance (reaction time) during n-back working memory task and routine work task in analog space environment. Results indicated that the information entropy of hemodynamic response is related to task performance and subjective self-reported measures; the reaction time is predicted by regression analysis; and the accuracy of mental fatigue classification approaches 90%. Since fNIR is a portable, wearable and minimally intrusive methodology, it has the potential to be deployed in future space environments to monitoring mental fatigue and assessing the effort of operators in field environments.