Basics of seeing motion

Dynamisches Sehen von Sportlern mit unterschiedlichem Anforderungsprofil an den visuellen Apparat

“…Problemstellung: Insbesondere in den schnellen Ballsportarten und Rückschlagspielen wird ein gutes dynamisches Sehen verlangt [12]. Über die Retina wird das afferente dynamische Sehen vermittelt, das den Reiz für das efferente dynamische Sehen setzt [6,12,14]. Ziel der Studie war es, die dynamische Sehleistung von Sportlern aus Sportarten mit unterschiedlichen Anforderungen an das dynamische Sehen (DS) zu untersuchen.…”

“…Aim of Study: In particular, in the quick ball and racket games a good dynamic seeing is required [12]. The afferent dynamic seeing occurs via the retiina which mediates the stimuli for efferent dynamic seeing [6,12,14]. The aim of this study was to examine the dynamic visual acuity of sportsmen from sports with different demands on their dynamic seeing (DS).…”

The Role of Occlusion Cues in Apparent Motion

“…A further seemingly strong argument against a significant role of scene and form analysis in classical apparent motion stems from Wertheimer's (1912) observation that classical apparent-motion stimuli can evoke an impression of motion, even though the two stimulus elements are perceived as stationary. Since this so-called`pure phi' or`objectless' motion is experienced as detached from the stimulus objects giving rise to the impression, this has been taken as evidence that motion can be perceived in pure form without being associated with any specific spatial object (Wertheimer 1912;Boring 1950;O'Neil and Landauer 1966;Grossberg 1998;Ehrenstein 2003;Hock and Nichols 2004).…”