Influence of adaptation upon the impulsive time constant of the human vestibulo-ocular reflex system. II. Experimental investigation.
The response of the vestibulo-ocular reflex (VOR) system was measured after a start or stop in angular velocity around the vertical axis. All determinations were carried out six times for 5 subjects. In a previous study, the mean value of the response T1 was calculated from the slope of the decay of the slow phase eye velocity (method a) and found to be 13.2 +/- (SD) 1.4 s for CW stimulation, and 12.8 +/- 1.7 s for CCW stimulation. Using the cupulometric method (b) with a fixed threshold for the slow phase eye velocity, these values are 12.1 +/- 2.0 and 11.2 +/- 1.4 s, respectively. The difference between the values calculated by method (a) and those calculated by method (b) is in line with the theoretical predictions as formulated in section I of this paper.
D000222:Adaptation, Physiological; D006801:Humans; D008954:Models, Biological; D009760:Nystagmus, Physiologic; D011930:Reaction Time / Q000502:physiology*; D014722:Vestibule, Labyrinth / Q000502:physiology*