My research has both a basic and an applied flavor. The basic research extends our understanding of how humans process perceptual information about whether something is there, what it is, and where it is. Specifically, I study the interface between perception and attention by comparing predictions derived from competing models to the actual behavioral data. This interface between perception and attention is a key factor in visual perception, cognitive neuroscience, and applied research on display design and HCI program visualizations. The applied research uses the knowledge gained from basic research to predict, control, and enhance human perception and performance in human computer interaction (HCI) settings -- providing yet another test-bed for the models. This research is funded by the National Science Foundation.