Resting-State Functional MRI in Glioma Patients Before and After Surgery

Inclusion Criteria: * Patients with newly diagnosed brain mass suspected to be gliomas * English speaker * Right handed * Tumor is located on or adjacent to Broca's or Wernicke's areas in the hemisphere suspected to be dominant for language * No prior history of neurologic disease or insult, or neuropsychiatric illness requiring treatment that would affect cognition in the opinion of the attending neuropsychologist * Patients who will undergo neurosurgical resection * Patients who are on neurosurgical evaluation will undergo direct cortical stimulation (DCS) as standard of care * Patients who will complete pre- and postoperative neuropsychological testing per standard of care * Pregnant women Exclusion Criteria: * Patients with prior radiation or chemotherapy * Patients cannot give informed consent * Patients cannot undergo MRI and functional MRI examinations