Summary: The goal of this clinical is to learn more about decision making in psychosis spectrum disorders, like schizophrenia. The investigators will ask people who do not have psychosis to take a single dose of modafinil and then complete some brain games on the computer that measure decision making. They hope to improve our understanding of psychosis to help people in the future. The main research questi...

Summary: This is a phase II/exploratory clinical trial with a single-center, open-label design to evaluate the effect of modafinil on cognitive deficits in adult patients with multiple sclerosis and identify predictors of response using functional Magnetic Resonance Imaging (fMRI).

Summary: Fatigue, which is commonly defined as a feeling of tiredness during or after usual activities, or a feeling of insufficient energy to initiate these activities, is one of the most common secondary conditions among patients presenting with stroke. Post Stroke Fatigue (PSF) is a multidimensional motor-perceptual, emotional, and cognitive experience characterized by a feeling of early exhaustion with...