Perceptual binding of static and dynamic signals: a psychophysical and electrophysiological study on contour integration.

TL;DRAbstract

The present work investigates the mechanisms underpinning the integration of local signals (either local orientations, positions or directions) into whole configurations. The investigation is composed of three studies that try to disentangle the issue using a contour integration paradigm. Each of them focuses on a specific aspect of the problem. Study one compares two integration models: the first is the well known “association field model”, based on local lateral interactions between adjacent receptive fields tuned to similar orientation (in primary visual area V1). The second is a second-stage filter that follows rectification of first-order filters. Study two tests, instead, the idea that a local cooperative system is responsible for the integration of directional signals. In addition it investigates whether such a mechanism could explain the “motion facilitation effect” usually found with dynamic (compared to static contours). Finally, study three extends findings from study two r

Chat with Paper

AI Agents for this Paper