深視力測定法の新しい試み  [in Japanese] An Attempt to Find New Methods for Measuring Depth Perception  [in Japanese]

Depth perception is currently measured by the 'parallel' method. As an alternative to this, we have developed two new methods for measuring depth perception. One of them is the 'control' method, in which subjects control the equipment for themselves. The other is the 'momentary' method, in which subject are required to judge within a moment whether the center one of three target poles is to the rear of the poles on either side. We carried out an experiment to compare these three methods. 1. Both the average value and standard deviation obtained by the control method were smaller than those obtained by the parallel method. 2. Reproducibility in the control method was significantly higher than that using the parallel method. 3. Values obtained by the momentary method did not interrelate with those obtained either by the existing method or by the control method. These results suggest that the control method is more relevant for measuring depth perception than the parallel method.