Patent Document ID: 4545388
Application ID: 06502568
Patent Flag: 1

Claim One:
1. A machine-implemented method for monitoring the occurrence and ascribed medical significance of changes in a patient undergoing a medical procedure relative to a prior state of the patient at a time selected for medical relevance to the planned procedure after administration of anesthesia, comprising: electrically measuring brain functions of the patient which are selected for medical relevance to a medical procedure which the patient is to undergo, at said time at which the patient is in a state selected for medical relevance to the procedure, said selected state being after administration of anesthesia; processing the measurements to produce a self-norm comprising, for each brain function, a respective statistically and medically significant mean measurement and a respective statistically and medically significant standard deviation or variance measurement; electrically measuring the same brain functions of the same patient during the said procedure, at each of a sequence of time intervals selected for medical relevance to the procedure; testing each new set of measurements for statistically and medically significant change from the self-norm; converting each significant change to a dimensionless probability of significant deviation and combining at least two of the said probabilities through vector addition into a single vector-form indication of said medically significant change; and producing a tangible indication of the vector-form indication of the significant change, said tangible indication conveying information both as to the occurrence of a change and as to the ascribed medical significance of the change itself and the persistence of the change.