Study of Physiological Response of Human Navigator to Image Simulation of Ship Rolling

Koji Murai and Yuji Hayashi

Abstract:	We used to do some education and training of ship handling using simulators, and operators will be influenced on body and physiological response by image simulation through their eyes to obtain navigational information. Trainer needs to understand the effect of image simulation in simulator system. So, we are tackling the problem(1)-(4), which are (1) the comparison of stress level to ship handling using actual ships and simulators and (2) characteristics of physiological and body response to image simulation. In this paper, we describe unconsciously physiological and body response to image simulation of ship rolling (Rolling) with gravity center and R-R interval. Also, its evaluation will support analyses of human navigator's skill and art. We simulated rolling controlled by wave height from zero to eight meters at one meter intervals, and each maximum rolling angle are 0.0, 0.1, 0.8, 3.2, 6.1, 7.8, 11.0, 16.9 and 20.1 degrees. The subjects are seven persons, who are four experienced persons (navigator) and three inexperienced persons. And, we carried out the experiment for four kinds of horizontal visual field of the simulator to evaluate relationship between simulator's visual field and subject’s response. Here, horizontal angles are 30, 90, 150 and 210 degrees. The experiment carried out using radar navigation experiment and research facility in Kobe University of Mercantile Marine (KUMM), and we measured subject's R-R interval and gravity center. We calculate (1) length of gravity center displacement, (2) slant of gravity center movement, (3) average of R-R interval, (4) standard deviation of R-R interval and (5) SNS (sympathetic nervous system). Here, SNS(5)(6) is calculated by FFT (Fast Fourier Transform) in our study. We show characteristics of gravity center to body response and R-R interval to physiological response to image simulation of rolling.
Published in:	Proceedings of the 58th Annual Meeting of The Institute of Navigation and CIGTF 21st Guidance Test Symposium (2002) June 24 - 26, 2002 Hyatt Regency Hotel Albuquerque, NM
Pages:	383 - 389
Cite this article:	Murai, Koji, Hayashi, Yuji, "Study of Physiological Response of Human Navigator to Image Simulation of Ship Rolling," Proceedings of the 58th Annual Meeting of The Institute of Navigation and CIGTF 21st Guidance Test Symposium (2002), Albuquerque, NM, June 2002, pp. 383-389.
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