Temporal and spatial factors in motion integration 1The article is based on a presentation at the Joint Swiss-Japanese Scientific Seminar Human Motion Perception, Eye Movements, and Orientation in Visual Space, supported by the Swiss National Science Foundation in cooperation with the Japanese Society for the Promotion of Science, in Gunten (Switzerland) May 19-21, 1999. Some of the experimental results were

Abstract

The temporal and spatial factors in the integration of the perceived direction of motion were examined in two experiments. Experiment 1 measured the spatial limit of motion integration in multi-aperture viewing. It was found that the strength of the interaction between apertures depends on the distance between them and that the distance is the “real” spatial distance rather than the distance on the retina. Experiment 2 investigated the effect of temporal and spatial overlap on globally coherent motion. The results showed that in the integration of local motion spread over space and time temporal overlap is the most important factor. It is more important than spatial factors such as intersection, distance between apertures or the phases of moving patterns. These results provide the temporal and spatial requirements for motion integration of local motions. A relationship of these requirements to object perception is suggested.