Processing for multi-channel signals

摘要

Method and apparatus for improved processing for multi-channel signals. In an exemplary embodiment, an anomaly metric is computed for a multi-channel signal over a time window. The magnitude of the anomaly metric may be used to determine whether an anomaly is present in the multi-channel signal over the time window. In an exemplary embodiment, the anomaly metric may be a condition number associated with the singular values of the multi-channel signal over the time window, as further adjusted by the number of channels to produce a data condition number. Applications of the anomaly metric computation include the scrubbing of signal archives for epileptic seizure detection/prediction/counter-prediction algorithm training, pre-processing of multi-channel signals for real-time monitoring of bio-systems, and boot-up and/or adaptive self-checking of such systems during normal operation.

主权项

1. A method for displaying information to a user, the method comprising:
accepting input from the user selecting a metric to be displayed, said selected metric being associated with a multi-channel signal derived from outputs of a plurality of sensors positioned to acquire physiological signals, wherein each channel of the multi-channel signal corresponds to a different one of the plurality of sensors; displaying with a processor and a computer graphical display interface at least one time-series plot of the selected metric associated with the multi-channel signal; using a backdrop pattern, indicating on the at least one time-series plot portions of the plot having at least one identified characteristic; for each of the at least one time-series plot displayed, displaying with the processor and the computer graphical display interface a time event index wherein the corresponding metric meets a predetermined condition, wherein the predetermined condition comprises the selected metric being greater than a predetermined threshold; accepting input from the user as to whether to display further information associated with the time event index; and displaying the further information associated with the time event index when the user so specifies.