Temporal Patterns of Cardiovascular Response

Computers in biofeedback research and therapy

“…Yates (1980) comments on the importance of conducting long baseline sessions of individuals in the resting state to guard against confounding influences created by "drift" effects (i.e., directional shifts in signal readings due to a variety of complex factors). "Drift" effects have been noted in studies of skin potential (e.g., Crider, Shapiro, & Tursky, 1966), systolic and diastolic blood pressure (e.g., Glickstein, 1960), heart rate (e.g., Bouchard & Granger, 1977), alpha waves (e.g., Crosson, Meinz, Laur, Williams, & Andreychuk, 1977), peripheral temperature (e.g., Montgomery & Williams, 1976), and EMG (e.g., Kinsman & Staudenmayer, 1978).…”

Physiological Response to the Suggestion of Attitudes Specific for Hives and Hypertension

“…Glickstein has made this point in a recent discussion of the effect of base line changes. 8 For these reasons, the slope measure was adopted in this and the two preceding experiments. The control slope was computed by a\eraging the slope of the lines passing through each of the control points and the last control reading.…”