This project's aim is to understand the neural bases of speech and sound processing, and how such responses vary across the adulthood. Specifically, there is growing evidence that the timing of such responses is critical for cognition and language. This is a critical aspect as adults age, because we know that motor and neural responses change. For example, older adults may experience a greater amount of non-stimulus activity leading to decreased hearing performance and learning. Thus, this research is important for both our understanding of basic aspects of speech comprehension and it will also further our understanding of aging.