一眼の視野に作られた時間場の他眼の視野に対する転移に就いて

抄録

This experiment showed that a temporal field transferred from the visual field of one eye to that of another eye, as in the case of the well-known Bocci's after-image (lb) and Nicolai's brightness-adaptation (la). A temporal field means a temporal structure of the space, or the distribution of phenomenal simultaneity, i. e. (i) when one inspection stimulus is given momentarily twice and then another test stimulus is given almost at the same time with the former's second appearance (one point method at the simultaneous comparison) and an observer is instructed to report which of the last two appears the earlier ; the larger is the spatial distance between the two, the more the phenomenal simultaneity is delayed (10), and that (ii) it occures at a short time-interval at which φ-phenomenon may appear, (a similar phenomenon at a large time-interval beyond 1 sec. to 11 sec. is to be seen as a different phenomena, not a spatial effect but a peripheral effect (8a)), and that (iii) the effect is determined neither by objective spatial distance nor by a retinal one but by phenomenal distance (11), and that (iv) its appearance is affected by sets and φ-or quasi-φ phenomenon which is determined by different sets accompanies displacement of the temporal field (8b).
At this experiment a stereoscope was used (Fig. 3) in a dark room and Osaka's time signal generater (Fig. 4) served as a timer. The stimuli constellation consisted of two staying fixation lines which might phenomenally fuse into a tilted line and six momentary spots (Fig. 2) of which only two were presented at one and the same series, i. e. one as an inspection stimulus and another as a test stimulus. The names of the 10 experimental series of the tables 1, 2, & 3 shows which stimuli were presen-ed in each of them. The standard time-interval was 400 ms which consisted of lighting time 200 ms and lighting-out time 200 ms, and a phenomenally equal time-interval to it was determined by the decreasing-step method of lighting-out time at simultaneous comparison. The upper points in relation to the tilted lines Λ appear nearer than the lower points.
Table 1 shows the results of the experimental research of temporal fields in the visual field of an eye to which an inspection stimulus was given, and Table 2 shows that of the other eye to which an inspection stimulus was not given. The temporal field was transferred from the former to the latter, obviously weakened but keeping still a considerable strength. The phenomenon of TF, i. e. the spatial effect on time perception might be explained by the electro-magnetic neuro-induction theory (8a), so it looks very important to the theory to determine how strong the self induction may occur in the stimulus circuit of the inspection stimulus which is given twice. It should be considered in the series of the table 3 of the one point method, but not in those of the table 2 of the two points method. Each series of the latter corresponds respectively to those of the former, e. g. I'I₀'T'V to I'I'T'V. Then we can see it may be so weak that, as a result the differences between the strengh of each TF are not significant at analysis of variance.