@other{https://resolver.caltech.edu/CaltechETD:etd-12202007-110933, title = "Two themes in perceptual ecology : visual attention and awareness", year = "1996", url = "https://resolver.caltech.edu/CaltechETD:etd-12202007-110933", id = "record", doi = "10.7907/tv8e-g179" }