[Changes in blood pressure, heart rate, respiration frequency and ECG in rhesus monkeys exposed to socio-emotional stress].

Blood pressure, heart rate, respiration frequency and ECG parameters were measured in 3 juvenile male rhesus monkeys under acute and chronic influence of a stepped load schedule including positive (nutritional), negative (pain-related) and socially operant conditioning and phases of a pharmacological sensibilization (angiotensin-II) of the cardiovascular system. The results suggest a general adaptation to the positively operant conditioning, while the latter stressing influences (either single or in combination) produced blood pressure and heart rate elevations, which had the character of dysregulatory functional changes (borderline hypertension model) and were reached by other authors, if at all, only through stronger stress influences.