![]() ![]() The two images need not even be presented simultaneously to obtain rivalry, a long as they are repeatedly shown within 350 milliseconds. Remarkably, binocular rivalry is quite insensitive to a temporary blanking of the stimulation. In this thesis I started the investigation on the influence of temporal aspects of stimulation on binocular rivalry. However, temporal aspects are not so well-studied. It has been well-studied how spatial aspects of stimulation influence the rivalry behaviour. The images fight, as is were, for dominance, hence the name binocular rivalry. In stead seeing an average of the two images, we see a continuing alternation of the images. Binocular rivalry results when our two eyes receive conflicting images. The results point out that a single speed-sensitive system indeed may explain the data in the literature and the newly-obtained data of this thesis. I have tested this prediction with computational models and experiments. In this thesis I have proposed that the data know up to now also permit a simpler explanation, namely that a single system processes the entire range of visible speeds. It has often been proposed that speed-processing is supported by two (or more) systems: one for low speeds and one for high speeds. However, for the speed of motion no such general agreement exists. It is generally accepted that the direction-component is processed by a single system (that is, a collection of interconnected brain areas). Motion consists of two components: a direction and a speed. In the second part, I have researched the human perception in circumstances in which a large conflict exists between the inputs in the two eyes (a circumstance in which binocular rivalry results). ![]() In the first part of the thesis, I have investigated functional architecture underlying human perception of motion, and in particular the speed of motion. Although a lot is known about the visual system's architecture from histological research, there is still much unknown about the functional architecture (about how the interactions actually work). The total set of interactions between and within the different brain areas is the "architecture. A lot of communication takes place between, and also within, these areas. These areas often have a specific function. Our everyday visual perception is supported by a complicated set of interactions between different brain areas. ![]()
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