Selection Mechanisms of Vision: Perceptual Input vs. Working Memory Maintenance

Abstract

This dissertation was designed to assess the relationship between perceptual selection and working memory maintenance. Two models of working memory assert that we use attentional selection to determine what information enters, and is subsequently stored, in visual working memory. However, unitary models propose that one mechanism is used for the selection of perceptual input and also the temporary maintenance of information while a multi-component model proposes separate mechanisms for each process. Using event-related potentials and eye-tracking techniques, a series of experiments contrasted the predictions of the models and found support in favor a single selection mechanism.