出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：It was been clarified that one of the important conditions influencing on the quality of the kinetic visual acuity which is an ability to see the moving object clearly and quickly as seen in the field of sports and so on is the rod function of the retina. The authors have made the experiments to solve the relationship between the rod function of the retina and the timing action under the several experimental conditions in which some kind of medicine to activate the rod function was applied to one group of persons (group of with medicine, WM group) and timing action to the moving object was measured day by day in the period of application of medicine comparing to the data obtained from the other group of persons who was not applied the medicine (Group of without medicine; WoM group). The results were obtained as follows: 1) Daily change of time of error in timing action decreased remarkably in the WM group only, and more remarkable decrease of time of error was observed when the velocity of the moving object was slow. 2) Daily change of difference of time of error in timing action between the cases of low and high velocities of the moving object was noticeable only in the group of WM, and final period of the experiment almost the same time of error in timing was observed in both velocities. :3) Measuring the timing actin when the test object moved in several directions, time of error in timing action prominently decreased day by day in each iredction of movement in the group of WM only. From above results, it was understood that superiority in the rod function of the retina might effect the decrease of time of error in timing action as well as the known fact as seen in the kinetic visual acuity.
