Abstract

oculo-gyral and oculo-gravic illusions were studied in flight using three Ss who observed a fixed luminous target in the dark. The observations were made in the rear cockpit of an SNJ-6 aircraft while the pilot executed turns with different degrees of bank… . In the first series the turns were carried out by using a constant power setting and changing the angle of attack of the wing to maintain the proper altitude. In the second series the angle of attack was held constant while the power was increased to maintain altitude. The third series was a repetition of the first for 3 selected angles of bank… . there was no significant evidence of any difference in the illusory perceptions during the 2 types of banks nor was there any evidence of habituation within the limits of this experiment. The illusory motion and displacement upward occurred at all angles of bank studied. There was a clear positive relation between the accelerative forces and the occurrence of the illusions. There was also an increase in the magnitude and duration of the illusions observed as the accelerative forces increased. (PsycINFO Database Record (c) 2012 APA, all rights reserved)

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