Cognitive studies of individuals with acquired brain damage can be used to inform models of how the brain normally functions. In our lab, we use psychophysical methods to study perception, action, language, and conceptual processing in stroke patients. By studying the patterns of spared and impaired performance on different tasks, together with an analysis of lesioned brain regions, it is possible to derive inferences about causal relationships among cognitive systems. The goal of this research program is to develop a cognitive and neural model of how we recognize, use, and talk about the objects that we interact with on a daily basis. This line of research is conducted in collaboration with Dr. Mary Dombovy.