Epilepsy Seizure Detection With Innovative Tripolar EEG (tEEG)

Inclusion Criteria:

* Pediatric (BCH): Age ≥ 6 years and \< 18 years
* Adult (BNI): Age ≥ 18 years
* Able to provide written informed consent or have a legally authorized representative able to provide consent; pediatric patients to provide assent when appropriate
* Scheduled for routine outpatient EEG for clinical diagnosis
* Able to participate in a post-EEG telemedicine video visit
* Clinical diagnosis of epilepsy with epileptiform discharges on prior routine EEG
* Scheduled for inpatient video-EEG monitoring for clinical diagnosis
* MRI of brain available for co-registration
* Confirmed diagnosis of focal epilepsy by prior video-EEG monitoring interpreted by board-certified epileptologist or clinical neurophysiologist
* Scheduled for inpatient video-EEG monitoring with intracranial stereo-EEG electrodes for epilepsy presurgical evaluation
* MRI of brain available for co-registration

Exclusion criteria

* Presence of a condition or abnormality that in the opinion of the Investigator would compromise the safety of the subject or the integrity of the data
* Any clinical suspicion of prion disease
* History of allergy or adverse reaction to EEG electrode paste or gel
* Scalp lesions or infections
* Severe intellectual disability or behavioral disorders with inability to cooperate with EEG application or recording