Dynamic adjustment of detection sensitivity
The sensitivity of the Spike Detector output can be dynamically adjusted during the review process. When Spike Review is initially opened, the detection sensitivity is set to Medium, which is the default. In this position the Spike Detector neural network algorithms identify sharp transients that have a high probability of being epileptiform abnormalities.
However, some spikes and sharp waves that are less well-formed may not be evident at Medium sensitivity. The detector’s sensitivity can be quickly adjusted on the fly. When set to High, Spike Review shows the results of the detector at this more sensitive setting, which is more likely to identify less well-formed or lower amplitude transients. New groups may then appear in the Overview display of spike averages. In concert with the increase in true spike detections, there is also an increase in false positive detections.