The disclosure is directed to a hose assembly including a corrugated metal hose having an inner surface defining a lumen and an outer surface and a polymeric layer surrounding the outer surface of the corrugated metal hose. The invention also relates to a method for determining a property of light at a remote position. Upon generation of a warning log message, descriptive log messages in the message buffer are flushed to a log file for review by an administrator. Furthermore, each electrode, whether residing on a unipolar, bipolar or multipolar lead, may be selectively connected or disconnected through programmable switching circuitry that determines the electrode configurations to be used for sensing and for stimulating at each stimulation site.