Accuracy of BIS monitoring using a novel interface device connecting conventional needle-electrodes and BIS sensors during frontal neurosurgical procedures
Fig 2
The interface device setting for direct and indirect recording.
The setting for the clinical study 2 using BIS™ Bilateral sensors. Left BIS™ Bilateral sensor is attached at the forehead following the manufacturer’s instruction. Two needle-electrodes are inserted subcutaneously adjacent to the LE and LT electrodes and connected to the RE and RT side via the interface device. Arrows designate the signal paths (orange arrows: indirect bispectral index (BIS) recording; green arrows: direct BIS recording). BIS: bispectral index, EEG: electroencephalogram.