Epilepsy Motion Sensing

Inclusion Criteria: * 18 years of age or older * Diagnosed with epilepsy and expected to have at least one motor seizure in the EMU * Determined by the Investigator to be an acceptable candidate for epilepsy evaluation with intracranial or scalp electrode monitoring * Willing and able to wear 3 ActiGraph GT3X+ devices for the duration of their participation in the study and comply with the study protocol * Have one of the following seizure types: (a) partial seizures with secondary generalization, which results in visible clonic or tonic-clonic motor behavior; (b) primarily generalized seizures (in patients with either primary \[idiopathic\] or secondary \[symptomatic\] generalized epilepsy), which may involve the following depending on the motor manifestation observed: myoclonic seizures, clonic seizures, tonic-clonic seizures, or atonic seizures. * Be able to consent to participate by signing the Informed Consent document after a full explanation of the nature and purpose of this study * Male or non-pregnant female * English speaking Exclusion Criteria: * Currently enrolled in another investigational device, drug, or surgery study. Concurrent physiologic study participation is acceptable * Have an implanted device that may interfere with GT3X+ recordings, ECoG/EEG recordings, ECG recordings, or video recordings * Have a movement disorder that may affect GT3X+ recordings