Abstract

Verf. untersucht in einer Serie von drei Experimenten psychophysiologische Zusammenhänge zwischen dem Zielen und Werfen. Bei den Versuchen werden Würfe aus zwei unterschiedlichen Distanzen durchgeführt. Um den Einfluss der visuellen Wahrnehmung auf die Wurfgenauigkeit zu isolieren, wird die Genauigkeit von Würfen mit einer Brille, deren Glaeser eine 11 Grad-Verzerrung hervorrufen, mit Würfen ohne diese Brille verglichen. Die Auswertung erfolgt mit Hilfe des t-Tests. Die Ergebnisse sagen aus, dass sich nicht bei allen Bewegungsformen Bewegungsanpassungen bei Sinnestäuschungen vollziehen. Chomse

Abstract

Thies series of three experiments was set up to give evidence of the psychophysiological bases for throwing balls. The initial hypotheses posited was that of the existence of a double mechanism goverming prehsension and projection activities and dependant on the conflictual state in which the subjects were placed. With the right-handed subjects we used a prodedure of shifting visual space, by having them wear prismatic lenses. The adaptations to two hand-eye tasks, pointing and throwing accomplished in a nearer or further space, were selected as dependant variables. The shiftings caused by the prisms were measured in terms of shifting X and Y activities (pointing and throwing) such that DX = DY. The results were processed with the t-test method. Considering that the reoganization of a movement exposed to a sensorial conflict would not generalize to all movements not exposed to that conflict, the main hypotheses was confirmed. This lack of generalization may be ascribed to a differentiated involvement of the following parameter: space, shape, and programmation of movement. Verf.-Referat