1. In a medical device system having a plurality of monitoring elements, a method for detecting poor signal quality comprising the steps of: (a) receiving a neurological signal from one of the monitoring elements; (b) processing the received signal to generate a plurality of data points for the signal in a moving time window; (c) detecting that the received signal has poor signal quality by determining that an amount of the data points exhibiting poor signal quality within the moving time window has exceeded a predetermined threshold; and (d) ignoring the received signal experiencing poor signal quality in signal processing.