In some embodiments, the virtual anesthesia monitor is a virtual BIS monitor for producing {HEAD ~ a BIS value} responsive to {TAIL ~ the combined BIS signal} 
responsive to
In some embodiments , the virtual anesthesia monitor is a virtual BIS monitor for producing { HEAD ~ a BIS value } responsive to { TAIL ~ the combined BIS signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL