Inclusion Criteria:  Patient or legally authorized representative provides written authorization and/or consent. Patient is enrolled in the LAANTERN trial and had an epilepsy diagnosis without the presence of a malignant brain tumor. Patient is 16 years of age or older. Patient has completed a baseline comprehensive neuropsychological assessment with a neuropsychologist.  Exclusion Criteria:  1. Patient does not complete the index LITT procedure as specified in the LAANTERN registry.