PreOp is intended for use by a trained/qualified EEG technologist or physician on both adult and pediatric subjects at least3 years of age for the visualization of human brain function by fusing a variety of EEG information with rendered imagesof an individualized head model and an individualized MRI image.

Persyst ESI powered by Epilog provides Electrical Source Imaging as a service to a clinical user. The clinical user does not interact directly with the device. In the Persyst ESI powered by Epilog service, the device is used by Epilog operators to generate a report.Persyst ESI powered by Epilog is intended for use by a trained/qualified EEG technologist or physician on both adult and pediatric subjects at least 3 years of age for the visualization of human brain function by fusing a variety of EEG information with rendered images of an individualized head model and an individualized MRI image.

PreOp is active medical device software (MSDW) intended for use by a trained Epilog EEG technologist / Operator in combination with Persyst EEG Review and Analysis Software on both adult and pediatric subjects at least 3 years of age for 3D visualization of the human brain function recorded with EEG and using a patient-specific MR image.