The purpose of this study to help us understand if adding transcranial Direct Current
Stimulation (tDCS), a non-invasive brain stimulation technique, to Speech Therapy
improves language recovery in people with Broca's aphasia and is more effective than Speech Therapy alone.

Children ages 3-4.5 years of age will watch videos designed to teach them made-up verbs. Then, they will be tested on whether they were able to learn the made-up verbs that were presented to them. Findings from this study will help researchers better understand how children learn language and what word-learning situations are easy or difficult for toddlers. This study will be conducted virtually using video conferencing software.

Older adults typically have trouble identifying the speech they hear, especially in noisy environments. Fortunately, compared to younger adults, older adults are better able to compensate for difficulties identifying the speech they hear by recruiting the visual system. However, the extent to which older adults can benefit from visual input, and how this influence relates to age-related changes in brain structure and function, have not been thoroughly investigated. The general purpose of this study is to determine how age-related changes in brain structure and function affect how well people hear and see. This study seeks participants with normal hearing to mild hearing loss, who also have normal or corrected-to-normal vision.