The monitor display is user configurable.  A typical display configuration is shown below.  In this example, the parameters monitored are ECG, respiration and temperature. D tection of the R-wave (QRS complex) is indicated by the presence of a red dot on the cardio sweep display above the R-wave peak.

The respiration waveform dips during animal inspiration and exhibits only small changes in amplitude during expiration.  Expiration is indicated by the presence of a red bar above the appropriate portion of the waveform.

White dots in the cardio sweep display are also shown in the respiration sweep display.  They indicate times when gates have been sent to the scanner to initiate image data acquisition.  In this case, the gating algorithm included both ECG and respiration, so red dots (R-waves) only generate white dots (gates) when they occur during animal expiration.