Definition of rector for English Language Learners. : 1  a priest or minister who is in charge of a church or parish. : 2  a person who is in charge of a university or school.
Cardiac Cycle. in Physiology. Cardiac events appearing from the beginning of one heart beat to the beginning of next heart beat and repeating themselves successively. â¢ Cardiac cycle time (H.Rate = 75/min) : 0.8 sec. Systole: 0.27 sec. Diastole: 0.53 sec.
In studies of heart rate variability (HRV), however, heart rate is modelled as as a quasi-continuous signal, and the RR interval series is used to obtain samples of that signal at more frequent intervals.he first column in the output is the elapsed time in seconds, and the second column is the instantaneous heart rate in beats per minute. The argument of the-F option indicates the desired sampling frequency for the heart rate signal, in this case 4 samples per second.