Abstract
While the similarity of numerical processing across different modalities (e.g., visual objects, auditory objects, extended visual events) suggests that number concepts are domain general even at the earliest ages (4 month old babies), visual processing is constrained in ways that may have constrained the numerical concepts humans have developed. In this talk I discuss how online processing of numerical content is shaped by the constraints of both object-based and ensemble-based visual processing and discuss how numerical content and vision engage one another.