PalatinoTwo Research Associate positions will be available this summer in the Infant Vision Laboratory at the Smith-Kettlewell Eye Research Institute. The first position is on a continuing NIH project and the second is on an anticipated new NIH project. The first position involves continuing developmental studies of perceptual binding in ``middle vision" and the second involves new developmental studies of rivalry and stereopsis. The continuing project involves studies of two forms of perceptual integration --- contour integration --- in which local measurements of orientation are integrated into smooth contours and motion integration --- in which local motion measurements must be integrated into a global motion percept. Parallel studies are planned in adults, normally developing infants and adults with a history of amblyopia. (Amblyopic observers have deficits in both contour and motion integration). Integration in both domains will be indexed by novel Visual Evoked Potential measures. Adults will participate in psychophysical experiments comparing perceptual and electrophysiological indices of integration. We anticipate the use of high-density (64-channel) recordings in both infants and adults. The project thus covers a wide range of subject matter and techniques. Strong quantitative skills are an asset, as is an interest in development. The new project involves studies of the development of rivalry and its relationship to developing binocular vision in normal infants. Traditional theories of rivalry and its development view rivalry as a low-level visual function that emerges simultaneously with stereopsis. We have found that rivalry appears to be quite immature in infants who are old enough to demonstrate stereopsis. We base our conclusions on a new Visual Evoked Potential technique that can track rivalry alternations directly and in real-time (Brown et al., Invest. Ophthal. Vis Sci., 1999). The goals of this project are to explain why rivalry fails in infants and to re-evaluate rivalry in relationship to stereopsis, using developmental association/dissociation as a means to test models. The project will utilize Visual Evoked Potential recordings, behavioral and oculumotor measurements in infants, plus psychophysical measurements in adults. Research interest in binocular vision is desirable as is an interest in visual development, combined with strong quantitative skills. Tony Norcia will be available at ARVO to meet with prospective candidates. Interested candidates are encouraged to contact him via email (amn@ski.org) and to forward Curriculum Vitae to him at SKERI, 2318 Fillmore St., San Francisco, CA 94115. Additional information regarding Smith-Kettlewell and the Infant Vision Laboratory can be found at the Smith-Kettlewell website: www.ski.org and www.ski.org/AMNorcia_lab/