The Marsh Lab studies stroke treatment, recovery and risk identification. The Marsh Lab created the Hemorrhage Risk Stratification (HeRS) score to predict hemorrhagic transformation in patients treated with anticoagulants. Currently, the Marsh Lab is using magnetoencephalography (MEG) to investigate how strokes impact higher level cognitive processes. Additional research in the lab focuses on treatment options for reversible cerebral vasoconstriction syndrome (RCVS).