Patent ID: 11925470
Assignee: CARNEGIE MELLON UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. The method of claim 4 wherein localizing the one or more regions of silence in the high-resolution grid further comprises:
initializing a source variance variable, an exponential decay coefficient and a set containing the plurality of sources contributing to the one or more regions of silence;
performing an iteration of the following steps:
determining a power ratio for each of the plurality of electrodes indicating the reduction in the power of the electrode due to the one or more regions of silence;
determining a set of electrodes having a minimum reduction in power;
based on the signals from the set of electrodes having a minimum power reduction, and values of the source variance variable and the exponential decay coefficient from a previous iteration, recalculate the source variance variable and the exponential decay coefficient;
calculating a source covariance matrix based on the source variance variable and the exponential decay coefficient;
calculating a source contribution measure for the high-resolution grid for each of the sources based on the covariance matrix;
localizing the regions of silence in the high-resolution grid using convex spectral clustering based on the source contribution measures for the high-resolution grid; and
updating the set of electrodes.