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IDENTIFICATION OF PFRIODIC COMPONENTS IN PHYSIOLOGICAL MEASUREMENTS
Author(s) -
Wieland Betty A.,
Mefferd Roy B.
Publication year - 1969
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1969.tb02895.x
Subject(s) - spurious relationship , smoothing , variance (accounting) , identification (biology) , statistics , autocorrelation , psychology , econometrics , mathematics , botany , accounting , business , biology
Baseline diastolic blood pressure measurements made on a single subject for 120 consecutive days were utilized to demonstrate the use of autocorrelation techniques for the identification of cycles of one or more periods present in the data. Provided only a single period is present, averaging techniques using this period as the base may be used to smooth the data. However, few physiological variables cycle so simply. Smoothing not only may introduce spurious cycles, but it also eliminates much non‐random (and, therefore, meaningful) variance.