Signal Quality Index
| Status | Exists in Rosetta |
| Category | Brain Electrical Activity |
| Common Name | Signal Quality Index |
| Label | SQI |
| Description | Is calculated at a moment in time based on preceding measurements. |
| Background | Reflects quality of EEG signal based on impedance measurement. |
| Devices | BIS Brain Monitoring System, Phillips BIS |
| Units | % |
| Metadata | Sensor Placement; Use of gels or other mediums; Patient preparation |